Source: https://sozai.app/transcript/youtube-video-transcript-488/ Explores the Serranía del Baudó, a little-known coastal mountain range in Colombia's Chocó, one of the wettest and most biodiverse places on Earth. ## Key Takeaways - The Serranía del Baudó is a biologically rich, underexplored coastal range whose modest height belies its ecological significance. - The Chocó's extreme rainfall and isolation have produced high endemism and likely many undiscovered species. - Indigenous communities are integral to understanding and stewarding the region's ecosystems. - Conservation of the Chocó faces real pressure and requires sustained research and policy support. ## What the video covers - Introduces the Serranía del Baudó, a roughly 300 km coastal range along Colombia's Pacific coast in the Chocó Department, distinct from the Andes. - Highest point is Alto del Buey at about 1,810 m above sea level, modest in height but notable for its setting. - The Chocó is among the wettest regions on Earth, with some areas receiving over 9,000 mm of rain annually, far more than London or New York. - The Baudó River drains the range westward through dense forest accessible mainly by motorized canoe and then on foot. - The region hosts exceptional biodiversity, including vividly colored poison frogs, many plant species such as Anthurium, and likely undescribed species. - Survey coverage is incomplete, with most research concentrated at lower elevations near the Baudó River rather than the higher cloud forest. - Indigenous Embera and Wounaan communities have lived in and known this landscape for centuries and maintain deep ecological knowledge. - Isolation and stability have promoted endemism and distinct human cultures in relative separation. - The Chocó is recognized as a global biodiversity hotspot, but faces deforestation and habitat loss pressures. - Conservation efforts include protected area expansion, national biodiversity research institutes, and REDD+ forest carbon programs. ## Chapters 1. 00:00 Introduction to the Serranía del Baudó 2. 09:00 Geography and the Chocó's extreme rainfall 3. 19:00 Biodiversity: frogs, plants, and undescribed species 4. 30:00 Indigenous communities and human history 5. 40:00 Research gaps and survey limitations 6. 50:00 Evolution, isolation, and endemism 7. 60:00 Conservation pressures and policy efforts 8. 70:00 Closing reflections on the undiscovered cloud forest Answers ## Questions about this video Where is the Serranía del Baudó located? It is a coastal mountain range running roughly 300 km north to south along the Pacific coast of Colombia's Chocó Department. The video notes it is a separate coastal range rather than a branch of the Andes. Why is the Chocó region so wet? The Chocó receives extraordinarily high rainfall, with some areas getting over 9,000 mm per year, roughly 15 times New York's total. This constant moisture shapes the dense ecosystem found there. Why does the video say there may be undiscovered species in the region? Biological surveys have been short and concentrated at lower elevations near the Baudó River, leaving the higher cloud forest largely unexplored. The region's isolation and diversity suggest many species have not yet been formally described. ## Full Transcript — Download SRT & Markdown 00:01 Speaker A Hello there, and welcome to Life Beyond Scene, where the quietest places on a map sometimes turn out to be the ones with the most to say. 00:09 Speaker A There is a particular feeling that comes from looking at a map late at night, when the room is dim, and the rest of the world has gone still. 00:17 Speaker A There is a particular feeling that comes from looking at a map late at night, when the room is dim and the rest of the world has gone still. 00:27 Speaker A A name you've never heard. A range of mountains that nobody in your life has ever mentioned. 00:33 Speaker A You trace a coastline with your finger, move inland, and somewhere in the middle of all that green, you find something you did not expect. 00:46 Speaker A Somewhere along the Pacific coast of Colombia, tucked into one of the wettest corners of the Western Hemisphere, there is a mountain range called the Serranía del Baudó. 00:57 Speaker A A name you've never heard. A range of mountains that nobody in your life has ever mentioned. 01:12 Speaker A silhouette that ends up on postcards. On a map of Colombia, it looks almost modest. A thin, quiet ripple of elevated land running along the coast of a department called Chocó, sandwiched between the Pacific Ocean and the vast interior of the continent. 01:29 Speaker A And for a moment, you just sit with it. That feeling, part curiosity, part mild disbelief, is exactly what brought tonight's story into focus. 01:42 Speaker A Before we go any further, I want to ask you something small. Where are you right now, as you listen to this? Are you somewhere warm, with rain against a window? Or is it cold and dry outside? 01:53 Speaker A Somewhere along the Pacific coast of Colombia, tucked into one of the wettest corners of the Western Hemisphere, there is a mountain range called the Serranía del Baudó. 02:03 Speaker A Whatever the answer, I am glad you are here. This is the kind of story that works best when you have a little time and nowhere urgent to be. 02:11 Speaker A It does not appear in most travel guides. It rarely comes up in conversations about South American wilderness, even among people who follow that kind of thing closely. 02:19 Speaker A It helps more people find their way to stories like this one and it lets us keep making them. 02:25 Speaker A It is not especially tall. It does not have dramatic snow-capped peaks, or the kind of silhouette that ends up on postcards. 02:32 Speaker A The Serranía del Baudó runs roughly north to south for about 300 km along the Pacific coast of Colombia's Chocó Department. It is a coastal range, not a branch of the Andes, which is an important distinction we will come back 02:46 Speaker A On a map of Colombia, it looks almost modest. A thin, quiet ripple of elevated land running along the coast of a department called Chocó, sandwiched between the Pacific Ocean and the vast interior of the continent. 02:56 Speaker A That is not especially high by Andean standards. The Andes in Colombia reach well over 5,000 m in places. 03:04 Speaker A But the Baudó is hiding something. Several things, actually. And once you start looking at what this range actually contains, that modest appearance starts to feel almost like a deliberate disguise. 03:11 Speaker A What matters far more is the context in which these mountains sit. The Chocó Department of Colombia is one of the wettest places on Earth. 03:20 Speaker A Before we go any further, I want to ask you something small. Where are you right now, as you listen to this? 03:30 Speaker A New York gets around 1,200. The Colombian Pacific coast in some locations gets 15 times that. 03:38 Speaker A Are you somewhere warm, with rain against a window? Or is it cold and dry outside? 03:53 Speaker A expect it, depend on it, and in many cases require it to survive. The landscape that results from all of this water is dense in a way that is genuinely difficult to picture if you have not seen it. 04:09 Speaker A Maybe it is the middle of the night, and everything is completely quiet. Maybe you are in bed or on a couch or somewhere in between wakefulness and sleep. 04:15 Speaker A The Baudó River, which drains the range westward toward the Pacific, winds through a corridor of forest so thick that from above it looks almost solid. 04:24 Speaker A Whatever the answer, I am glad you are here. This is the kind of story that works best when you have a little time and nowhere urgent to be. 04:30 Speaker A Access to these mountains, for anyone who attempts it, means traveling by motorized canoe along the river system, and then continuing on foot into forest that does not thin out, does not relent, and does not particularly welcome visitors who are 04:46 Speaker A And if you find yourself enjoying what we explore together tonight, a like on this video and a subscription to the channel go a long way. 04:58 Speaker A It is the kind of coast that does not have a clean edge. It is more of a gradual transition from water to land and back again, repeated endlessly, until you are not quite sure which one you're standing on. 05:11 Speaker A It helps more people find their way to stories like this one, and it lets us keep making them. 05:21 Speaker A The people who live in and around the Baudó, primarily communities of the Embera and Wounaan indigenous groups, have known this landscape for centuries. 05:30 Speaker A There is no pressure, of course. Just know it is appreciated. Now, back to those mountains. 05:36 Speaker A They have names for the plants that grow here, for the animals that move through the forest at night, for the places where the cloud begins and the light changes and the air gets cooler. 05:45 Speaker A The Serranía del Baudó runs roughly north to south for about 300 km along the Pacific coast of Colombia's Chocó Department. 05:55 Speaker A Not just a biological system, but a place where human and ecological history are woven together in ways that are still being understood. We will spend more time with those communities later in tonight's story. Because their relationship with the Baudó matters 06:09 Speaker A It is a coastal range, not a branch of the Andes, which is an important distinction we will come back to. 06:25 Speaker A and still not quite feel what they mean. Imagine arriving at the edge of the Baudó by river. 06:31 Speaker A And it rises to its highest point at a peak called Alto del Buey, which sits at approximately 1,810 m above sea level. 06:38 Speaker A The air is heavy and warm. Everything is wet, not from recent rain necessarily, but just because that is the baseline condition of this place. 06:48 Speaker A That is not especially high by Andean standards. The Andes in Colombia reach well over 5,000 m in places. 06:53 Speaker A They are simply always this way, always glistening, always slightly dripping. As you move upriver and the terrain begins to rise, things start to shift. 07:03 Speaker A By comparison, the Baudó is low, green, and unassuming. But height is not the only thing that matters here. 07:13 Speaker A The cloud forest zone of the Baudó produces a kind of persistent low visibility that softens everything. 07:21 Speaker A What matters far more is the context in which these mountains sit. The Chocó Department of Colombia is one of the wettest places on Earth. 07:33 Speaker A It is not cold exactly, but it is a different kind of air. Denser, quieter, colder feeling somehow. 07:41 Speaker A Some areas along this coast receive more than 9,000 mm of rainfall per year. To put that in perspective, London gets about 600 mm annually. 07:48 Speaker A Frogs you've not heard before, insects with unfamiliar rhythms, and occasionally, somewhere in the canopy above, a bird sound that does not match anything in the standard field guides for the region. 08:02 Speaker A New York gets around 1,200. The Colombian Pacific coast, in some locations, gets roughly 15 times that. 08:15 Speaker A That's the Baudó in its simplest form. A range of low, wet, cloud-draped mountains on the edge of the Pacific surrounded by some of the densest forest on Earth. 08:27 Speaker A The rain here is not a seasonal event. It is a near-constant condition, a permanent feature of life, the background hum of an ecosystem that has been saturated with water for so long that everything in it has adapted to expect it, depend on it, and in many cases require it to survive. 08:34 Speaker A And inside that isolation, something remarkable has been happening for a very long time. The Baudó's highest point, Alto del Buey, at 1,810 m, does not sound like the kind of elevation that would produce a biological island. 08:52 Speaker A The landscape that results from all of this water is dense in a way that is genuinely difficult to picture if you have not seen it. 09:09 Speaker A They stay where they are. They stay, and over generations, over thousands of years, they change. 09:16 Speaker A The lowlands along the coast are a tangle of mangrove forest, river delta, and flooded woodland. 09:30 Speaker A described and named. The range has been known to Western science for over a century, and it is still yielding discoveries at a rate that surprises the researchers who work there. 09:41 Speaker A The Baudó River, which drains the range westward toward the Pacific, winds through a corridor of forest so thick that from above it looks almost solid. 09:53 Speaker A On a map, the Serranía del Baudó is easy to overlook. It is not labeled prominently. It does not have the visual weight of the Andes, which dominate any map of Colombia with their thick, obvious spine running down the center of the country. 10:08 Speaker A There are no paved roads into the interior of the Baudó range. There are barely any unpaved ones. 10:14 Speaker A But shyness and smallness are not the same as insignificance. Some of the most important things in biology are small and quiet and easy to overlook until someone looks carefully enough. 10:26 Speaker A Access to these mountains, for anyone who attempts it, means traveling by motorized canoe along the river system, and then continuing on foot into forest that does not thin out, does not relent, and does not particularly welcome visitors who are not prepared for it. 10:40 Speaker A To understand why the Baudó produces this kind of result, though, you have to understand something about its geological identity, about what it actually is in terms of the earth's structure and how it came to be separated from everything around it. 10:56 Speaker A The coastline itself, where the rivers finally reach the sea, dissolves into a network of estuaries and mangrove channels that shift and change with the tides. 11:10 Speaker A for millions of years. That is where the story really begins. Most mountain ranges, if you trace them back far enough, are cousins of one another. 11:20 Speaker A It is the kind of coast that does not have a clean edge. It is more of a gradual transition from water to land and back again, repeated endlessly, until you are not quite sure which one you're standing on. 11:29 Speaker A The Andes are part of that family, a long continuous chain of uplift down the western edge of South America built over tens of millions of years as the Nazca plate pushed beneath the continent. 11:41 Speaker A This is the world that surrounds the Baudó. And the mountains themselves rise out of it like something that decided a very long time ago to stay separate from everything else. 11:51 Speaker A The Serranía del Baudó is not part of that story. It does not belong to the Andes family at all. 11:58 Speaker A The people who live in and around the Baudó, primarily communities of the Emberá and Wounaan indigenous groups, have known this landscape for centuries. 12:10 Speaker A The kind of material that normally sits beneath the seafloor. At some point, likely during the Cenozoic era, this oceanic material was pushed upward and accreted onto the edge of the South American continent, becoming a coastal range that runs roughly north to south 12:25 Speaker A Their villages are built along the rivers, close to the water that serves as both road and food source. 12:42 Speaker A The Baudó is, in a very real sense, a piece of the ocean floor that decided to become a mountain range. 12:50 Speaker A They have names for the plants that grow here, for the animals that move through the forest at night, for the places where the cloud begins and the light changes and the air gets cooler. 12:57 Speaker A But it matters enormously because the rock a mountain is made of determines the chemistry of its soil and the chemistry of the soil determines what can grow there and what grows there determines what animals can live there. 13:10 Speaker A Their knowledge of this terrain is deep in a way that no outside researcher has fully mapped. And their presence in these mountains is part of what makes the Baudó what it is. 13:22 Speaker A That difference is subtle in some places and more pronounced in others, but across millions of years, it has contributed to a biological environment that is distinct from anything around it. 13:34 Speaker A Not just a biological system, but a place where human and ecological history are woven together in ways that are still being understood. 13:44 Speaker A The Atrato is one of the great rivers of the Colombian Pacific, flowing northward for roughly 750 km before emptying into the Caribbean. 13:53 Speaker A We will spend more time with those communities later in tonight's story, because their relationship with the Baudó matters enormously to everything else we're going to discuss. 14:02 Speaker A For species that live in the highland forests of the Baudó, the Atrato Valley is not something they can cross. 14:09 Speaker A But right now, I want to stay with the physical shape of the place a little longer. Because it is easy to hear the statistics, the rainfall numbers, the elevation figures, the absence of roads, and still not quite feel what they mean. 14:18 Speaker A So, the Baudó's highland inhabitants stay where they are. They have always stayed where they are. And staying over geological time means changing. 14:27 Speaker A Imagine arriving at the edge of the Baudó by river. 14:45 Speaker A But, the concept applies anywhere that a highland habitat is surrounded by lowland conditions that species cannot easily cross. 14:53 Speaker A The canoe is small, the motor loud, and the banks on either side are walls of green that lean over the water. 15:12 Speaker A The sea around it is not water or desert, but lowland tropical rainforest, which sounds hospitable, but is not for species is to cooler, mistier conditions. 15:23 Speaker A The air is heavy and warm. Everything is wet, not from recent rain necessarily, but just because that is the baseline condition of this place. 15:33 Speaker A Sky islands produce endemism. That is their defining biological characteristic. When a population becomes stranded on an island, whether that island is surrounded by water or by unsuitable habitat, it evolves in isolation. 15:50 Speaker A The forest does not dry out. The leaves do not have a dry season to prepare for. 16:04 Speaker A Given enough time, it becomes something that cannot interbreed with its nearest relatives, even if they were somehow brought back together. 16:11 Speaker A They are simply always this way, always glistening, always slightly dripping. 16:18 Speaker A The range has been geologically distinct from the Andes for millions of years, and the Atrato Valley has been a persistent barrier for a very long time. 16:27 Speaker A As you move upriver and the terrain begins to rise, things start to shift. 16:41 Speaker A differentiation. How long exactly is a question that researchers are still working to answer. Molecular phylogenetics, the science of comparing DNA sequences to reconstruct evolutionary relationships and estimate when lineages diverged, has been applied to some of the Baudó's endemic species, but the 17:00 Speaker A The trees change, the light changes. Mist begins to appear in the middle of the day, not as something passing through, but as something that lives there. 17:09 Speaker A For the plants, very little. And for the invertebrates, which almost certainly harbor the greatest number of undescribed endemic species in the range, almost nothing systematic has been done. 17:21 Speaker A The cloud forest zone of the Baudó produces a kind of persistent low visibility that softens everything. 17:33 Speaker A What we do know is that the isolation operates on multiple levels simultaneously. It is not just the Atrato Valley to the east. The Baudó is also bounded to the west by the Pacific coast, where the range drops steeply to a narrow coastal 17:47 Speaker A The outlines of trees become suggestions, the forest floor is carpeted with moss so thick it absorbs sound, and the temperature drops enough that you notice it on your skin. 17:56 Speaker A To the south, it fades into the broader lowland forests of the southern Chocó. So, the cloud forest zone at the heart of the range is surrounded on all sides by conditions that highland species cannot easily navigate. 18:09 Speaker A It is not cold exactly, but it is a different kind of air. Denser, quieter, somehow colder-feeling. 18:16 Speaker A The size of this island matters, too. The cloud forest zone of the Baudó is not vast. It covers a relatively modest area, a few hundred square kilometers at most, probably less when you account for the fact that the range is narrow, 18:30 Speaker A The soundscape changes, too. The calls of the lowland birds fade and are replaced by different voices. 18:47 Speaker A The Baudó's cloud forest is small enough that this is a real concern. Species with very restricted ranges and small population sizes are inherently fragile. 18:57 Speaker A Frogs you've not heard before, insects with unfamiliar rhythms, and occasionally, somewhere in the canopy above, a bird sound that does not match anything in the standard field guides for the region. 19:05 Speaker A Any of these can be enough to push a species from rare to gone. And yet, despite its modest size, the Baudó has produced an extraordinary number of endemic species. 19:15 Speaker A That last detail is not a poetic exaggeration. It has happened to ornithologists working here. The sound does not match because the species making it is not in the guide, not yet. 19:22 Speaker A The Baudó receives some of the highest precipitation on Earth. Parts of the surrounding region exceed 9,000 mm per year. 19:30 Speaker A That's the Baudó in its simplest form. A range of low, wet, cloud-draped mountains on the edge of the Pacific, surrounded by some of the densest forest on Earth. 19:42 Speaker A This relentless moisture creates conditions where life can be extraordinarily dense and varied. High rainfall means high plant productivity, which means abundant food and habitat for animals, which means more niches available for specialization, which means more opportunity for species 19:59 Speaker A Cut off from the rest of the Andes by geography and from the rest of the world by sheer inaccessibility. 20:18 Speaker A The transition from sea level to that elevation in a short horizontal distance creates a steep gradient of temperature, humidity, and vegetation type. 20:28 Speaker A And inside that isolation, something remarkable has been happening for a very long time. The Baudó's highest point, Alto del Buey, at 1,810 m, does not sound like the 20:43 Speaker A These zones can act as separate sub-islands within the larger sky island, further fragmenting populations and accelerating divergence. 20:52 Speaker A There is also the age of the isolation to consider, though this connects back to the geological uncertainty. 20:59 Speaker A If the Baudó has been biologically separate from the Andes for a very long time, and the evidence suggests it has, then its endemic species have had many generations to diverge. Frogs, for example, can speciate relatively quickly in isolated highland environments. 21:16 Speaker A Plants can take longer, but the Chocó's extraordinary plant diversity suggests that speciation has been happening here at an elevated rate for a long time. 21:26 Speaker A Birds, which are more mobile and can in theory cross barriers more easily, have still managed to produce endemic species in the Baudó, which tells you something about how effective the isolation has been, even for animals capable of flight. 21:41 Speaker A The Atrato Valley, specifically, is worth spending a moment with, cuz it is easy to underestimate a river valley as a barrier. 21:48 Speaker A We think of rivers as things you can cross, and you can, of course, in a boat or even by swimming. 21:56 Speaker A But for a bird that has evolved to live in cool, humid cloud forest at 1,000 m elevation, the prospect of flying across a broad, hot, humid lowland valley, and then ascending an entirely different mountain range on the other side, is not simply a 22:11 Speaker A physical challenge. It is an ecological one. The habitat on either side of the valley is different. The food is different. The conditions are different. 22:21 Speaker A For most cloud forest specialists, the valley is effectively impassable, not because of its width, which is perhaps 50 to 100 km in the relevant sections, but because of what that width contains. 22:35 Speaker A The lowland forest of the Atrato Valley is a different world, and crossing it means surviving long enough in an environment you're not adapted for to reach the other side. 22:45 Speaker A Most individuals do not make that trip. Most lineages never have. The result of all of this, the oceanic geology, the Atrato barrier, the steep elevation gradient, the relentless rainfall, the long duration of isolation, is a mountain range that has 23:03 Speaker A been quietly running its own evolutionary experiment for an enormous stretch of time. The Baudó is not a branch of the Andes. 23:13 Speaker A It is not an extension of anything else. It is its own thing geologically and biologically sitting on the edge of the Pacific in one of the wettest corners of the planet doing what isolated places do, making life that exists nowhere else. 23:29 Speaker A Scientists who have worked in the Baudó often describe a particular moment of recognition that comes when you are in the field there and you encounter something that does not fit any category you already know. 23:41 Speaker A A frog that looks almost like a species you have seen before but not quite. 23:47 Speaker A A plant with flowers that resemble a known genus but have some detail, a petal shape, a leaf arrangement, a color pattern that is just slightly wrong for anything in the literature. 24:00 Speaker A That moment of not-quite-rightness is, in a strange way, the Baudó announcing itself. It is the range's way of reminding you that the rules that apply elsewhere do not fully apply here. 24:14 Speaker A The categories you arrived with are not quite adequate for what you're looking at. That inadequacy, the sense that existing knowledge is not quite sufficient for this place, is what has drawn researchers back to the Baudó again and again 24:27 Speaker A despite the difficulty of getting there. And what they have found, particularly among the birds and amphibians and plants that are the most studied groups in the range, is a picture of endemism that is striking even by the standards of the 24:42 Speaker A broader Chocó region, which is itself one of the most biologically remarkable places on the planet. 24:49 Speaker A To understand what the Baudó has produced, though, it helps to first understand the larger world it sits within. 24:57 Speaker A Because the Serranía del does not exist in isolation from its surroundings in a cultural or ecological sense, even if its Highland species do. 25:06 Speaker A It is embedded in a region that has its own extraordinary story. A story of rainfall and forest and biological richness that makes the Baudó's isolation even more remarkable when you realize what it has managed to produce even within that already 25:21 Speaker A extraordinary context, the Chocó. Even the name has a particular weight to it. A density like the air itself in that part of the world. 25:31 Speaker A It refers not to a single country or a single political unit, but to a biogeographic region, a stretch of Pacific coastal land running from the Darién Gap in Panama southward through western Colombia and into northwestern Ecuador. 25:47 Speaker A It follows the Pacific slope of the continent, pressed between the ocean to the west and the Andes to the east, and in that narrow corridor, it has assembled one of the most concentrated collections of living things found anywhere on Earth. 26:01 Speaker A The numbers are difficult to fully absorb. The Chocó bioregion contains somewhere between 9,000 and 10,000 plant species, depending on how the boundaries are drawn and how recent the tallies are. 26:13 Speaker A Of those, roughly a quarter are endemic, meaning they grow here and nowhere else. Not nowhere else in Colombia, nowhere else on the planet. 26:23 Speaker A For a region that covers a relatively modest geographic area, that level of plant endemism is extraordinary. 26:30 Speaker A It suggests a place that has been generating new species for a very long time and doing so at a pace that has outrun the normal processes of dispersal and mixing that tend to homogenize floras across connected landscapes. 26:45 Speaker A The amphibians are even more striking in some ways. Colombia as a whole has more amphibian species than any other country on earth. 26:53 Speaker A Over 800 described species at last count with more being added regularly. The Chocó is one of the main reasons for that number. 27:01 Speaker A The density of frog and salamander species per square kilometer in parts of the Chocó is essentially unmatched globally. 27:09 Speaker A Frogs in particular have diversified here in ways that suggest the region has been acting as a speciation engine for a very long time. Producing new lineages, filling new niches, and doing so in the kind of wet, humid, structurally complex 27:24 Speaker A habitat that amphibians find most hospitable. The reason for all of this is, at its core water. 27:33 Speaker A The Chocó is one of the wettest inhabited regions on earth and it is wet in a particular way. Not seasonally, not in bursts, but persistently, almost continuously for most of the year. 27:45 Speaker A Some coastal and foothill areas receive more than 10,000 mm of rainfall annually. To put that in perspective, London receives about 600 mm per year. 27:56 Speaker A New York receives about 1,200. The Chocó receives in some places more than 15 times what a temperate city considers a rainy year. And it receives it in a way that keeps the forest perpetually drenched, the rivers perpetually full, and the humidity 28:10 Speaker A perpetually high. There is no real dry season in much of the region. There are periods that are slightly less wet. 28:18 Speaker A But the distinction between wet and dry in the Chocó is largely academic. It is almost always raining somewhere nearby and the forest shows it. 28:29 Speaker A That continuous moisture creates conditions for plant growth that are almost unparalleled. Decomposition is fast, nutrient cycling is rapid, and the forest canopy is dense and multi-layered. 28:43 Speaker A Epiphytes, plants that grow on other plants like orchids, bromeliads, ferns, and mosses, cover almost every available surface. 28:53 Speaker A A single large tree in the Chocó can support dozens of epiphyte species on its branches and trunk, creating a kind of vertical ecosystem stacked on top of the forest floor ecosystem below. 29:05 Speaker A This structural complexity means that there are an enormous number of microhabitats packed into a relatively small space. And where there are microhabitats, there are opportunities for specialization. 29:17 Speaker A And where there are opportunities for specialization, there are species that have taken advantage of them. 29:23 Speaker A Conservation International designated the Chocó as one of the world's biodiversity hotspots. A designation that requires both exceptional species richness and exceptional levels of endemism combined with significant habitat loss. 29:38 Speaker A The hotspot designation is in some ways a double-edged recognition. It acknowledges that a place is biologically extraordinary. It also acknowledges that the place is under severe threat. 29:50 Speaker A The Chocó earned both parts of that designation honestly. It is one of the richest places on Earth, and it is also one of the most threatened. 29:59 Speaker A Most people who are aware of tropical biodiversity think first of the Amazon. That is understandable. 30:05 Speaker A The Amazon is vast. It is famous. It has been the subject of scientific study for well over a century. And its sheer scale makes it impossible to ignore. 30:15 Speaker A But the Amazon, for all its richness, is a relatively flat, relatively uniform landscape. Its diversity is spread across an enormous area. 30:25 Speaker A The Chocó works differently. It packs comparable levels of endemism and diversity into a much smaller space with a much steeper gradient of habitats. And it does so in a region that has received a fraction of the scientific attention. 30:40 Speaker A The Amazon has had David Attenborough specials. The Chocó has had a handful of botanical expeditions and some ornithological surveys that most people have never heard of. 30:49 Speaker A There is a particular kind of invisibility that comes from being extraordinary, but not famous. 30:55 Speaker A The Chocó has that invisibility. It is not unknown to scientists. Specialists in tropical botany, herpetology, and ornithology are well aware of its importance. 31:07 Speaker A But in the broader public understanding of where the world's biological treasures are located, the Chocó barely registers. 31:14 Speaker A People know about the Amazon. People have heard of the Galapagos. The Chocó sits quietly between the ocean and the mountains, receiving its 10,000 mm of rain, generating its endemic species, and being largely overlooked by the world outside. 31:32 Speaker A Within the Chocó, the Baudó is even quieter. The surrounding lowlands and coastal areas of the Chocó have at least received some scientific attention over the decades. 31:42 Speaker A Botanical collectors passed through in the early and mid-20th century. Ornithologists have surveyed the coastal forests, and more recently, conservation organizations have conducted rapid assessment surveys in some of the more accessible areas. 31:57 Speaker A But the Baudó interior, the cloud forest zone in the higher elevations of the range, has had remarkably little systematic study, even by the already modest standards of Chocó research. It is, in a sense, a hidden interior within an 32:12 Speaker A already hidden region. Part of this is simply geography. The Baudó is not easy to reach, and even the surrounding Chocó lowlands are not exactly convenient. 32:22 Speaker A There are no major highways connecting the region to Colombia's interior. The city of Quibdó, the capital of Chocó Department, is accessible by air or by a road that is frequently impassable during heavy rains. 32:36 Speaker A The smaller communities along the Baudó River and its tributaries are typically reached by motorized canoe. 32:42 Speaker A Getting to the cloud forest zone of the Baudó requires traveling by river to a trailhead and then hiking upward through dense wet forest on trails that may or may not be maintained depending on who has passed through recently. 32:56 Speaker A It is not impossible, but it requires planning, local knowledge, and a tolerance for conditions that most researchers find genuinely challenging. The result is that even in a region famous among specialists for its biological richness, the Baudó has been somewhat set aside, 33:14 Speaker A noted as important, acknowledged as poorly known, but not yet the subject of the kind of sustained systematic biological inventory that its endemism would seem to demand. 33:26 Speaker A What surveys have been done have almost invariably found new species or significant range extensions. 33:33 Speaker A Every time someone has gone to the Baudó with the intention of documenting what lives there, they have come back with something that was not previously known to science or not previously recorded from the range. 33:44 Speaker A That pattern, consistent discovery every time across decades of sporadic visits, is itself a kind of data. 33:54 Speaker A It tells you that the rate of discovery has not slowed because the number of undiscovered species has not significantly decreased. 34:01 Speaker A The Baudó is not running out of surprises. There is also the matter of how the Baudó relates biologically to the rest of the Chocó. It is not simply a highland extension of the lowland forest. 34:12 Speaker A The cloud forest zone of the Baudó has species found nowhere else in the Chocó, species that are endemic not just to the Chocó region, but specifically to the Baudó highlands. 34:24 Speaker A This is what makes the range more than just another piece of the Chocó puzzle. 34:28 Speaker A If the Chocó is already one of the most biodiverse regions on Earth and the Baudó has species that are unique even within the Chocó, then the Baudó represents a kind of biological ultra-concentration, a place where the already high endemism 34:42 Speaker A of the surrounding region is further intensified by the additional filter of elevation and isolation. 34:48 Speaker A Think of it this way. The Chocó is already an island in a biogeographic sense, bounded by the Pacific to the west and the Andes to the east, with the Darién to the north and the drier landscapes of Ecuador to the south. 35:02 Speaker A Within that island, the Baudó is a smaller island still, bounded by its own elevation on one side and the lowland forest that its cloud forest specialist cannot easily cross on the other. 35:13 Speaker A You have endemism layered on endemism, species that are rare within a region that is itself globally unusual. 35:21 Speaker A It is a kind of nested isolation that has had millions of years to work its effects on the life that lives there. 35:28 Speaker A The Chocó status as a global hotspot is well established in the scientific literature. Conservation International first included it in the hotspot list in the 1990s, and subsequent assessments have only confirmed and deepened that designation. 35:44 Speaker A The region's plant diversity in particular has been a focus of concern because so much of it is still undescribed. Botanists working in the Chocó have repeatedly encountered plant specimens in herbarium collections, physical samples collected decades ago and sitting in museum drawers that turn 36:02 Speaker A out, upon careful examination, to represent species that were never formally named. Collections made in the 1940s and 1950s are still yielding new species in the 2000s and 2010s, simply because no one had gotten around to examining them carefully enough. 36:19 Speaker A That is an unusual situation in biology. It suggests a flora so rich and so poorly studied that even existing collections have not been fully processed, let alone the areas that have never been collected at all. 36:34 Speaker A The Baudó sits at the center of this situation geographically ecologically and scientifically. It is inside the Chocó hotspot, but it has received even less attention than the surrounding lowlands. Its cloud forest is a zone that combines the Chocó's baseline richness with the 36:52 Speaker A additional endemism generated by highland isolation. And it has been visited by formal scientific expeditions only a handful of times. 37:02 Speaker A The species lists for the Baudó are incomplete by any reasonable measure. The plant inventory is partial. The amphibian inventory is partial. The mammal inventory is almost certainly very partial. The fungi, the invertebrates, the lichens, these have barely been touched. 37:19 Speaker A What makes the Baudó's position within the Chocó particularly interesting is that it is not just a passive beneficiary of the region's biological richness. 37:28 Speaker A It has been an active contributor to that richness. A place where species have evolved that have then, in some cases, expanded into the surrounding lowlands and diversified further. 37:39 Speaker A The mountain range has functioned not just as a refuge, but as a source, generating biological novelty that has fed back into the larger Chocó ecosystem. Understanding the Baudó, in other words, is not just about understanding the Baudó. 37:53 Speaker A It is about understanding how the Chocó became what it is, how a narrow coastal strip between the Pacific and the Andes came to contain so much life, so much of it found nowhere else. 38:05 Speaker A And yet, for all that the surrounding region tells us about why the Baudó matters, it does not quite prepare you for what the range itself is actually like. 38:15 Speaker A The numbers and the biogeographic frameworks are useful. They give you a sense of scale and significance. 38:21 Speaker A But the Baudó is also a physical place, a specific landscape of ridges and rivers and cloud and forest with a particular feel and a particular sound and a particular quality of light that no amount of species counts can fully 38:35 Speaker A convey. Before moving into what lives in those forests, it is worth spending some time in them first. There are no roads into the interior of the Baudó. 38:46 Speaker A That is not an oversight or a gap in infrastructure planning that someone intends to fill eventually. 38:52 Speaker A It is simply the reality of the place, a mountain range so wet, so forested, and so far from the centers of Colombian economic life that the usual logic of road building has never quite reached it. 39:05 Speaker A The primary way in is by water. The Baudó River drains the western slopes of the range, running roughly westward until it empties into the Pacific near the small town of Pizarro. 39:17 Speaker A Motorized canoes travel these rivers, narrow and fast in the upper reaches, wider and slower as they approach the coast. 39:25 Speaker A And for the communities living along the river's tributaries, this is simply how movement works. 39:31 Speaker A You go by water or you go on foot, and often you go by both. 39:36 Speaker A Coming in from the coast, the first thing you notice is how the forest presses close. 39:40 Speaker A The river banks are thick with vegetation right down to the waterline. Not the manicured edge you might imagine, but a tangled and layered wall of roots and hanging vines and broad-leafed plants that seem to be actively competing for every inch of 39:55 Speaker A space above the water. The river itself is often the color of tea, stained dark by tannins leaching from decomposing leaves upstream. 40:06 Speaker A In the dry season, which in the Baudó is a relative term, meaning slightly less rain rather than actual dryness, the water level drops and sandbars appear. 40:16 Speaker A In the wet season, which is most of the year, the river rises and the forest edge blurs into something that is neither fully river nor fully land. 40:26 Speaker A As you move upstream and the elevation begins to climb, the forest changes. It does not change dramatically or all at once. 40:34 Speaker A It shifts gradually, the way temperature shifts when you climb stairs in an old building. A degree at a time, noticeable only when you pause and compare where you are to where you were. 40:46 Speaker A The tall emergent trees of the lowland forest, some of them rising 30 or 40 m above the canopy, become less dominant. 40:53 Speaker A The understory thickens. Mosses begin to appear on bark and branches. First in patches, then in sheets, then in what can only be described as a general covering of green softness over almost every surface. 41:07 Speaker A The light changes, too. In the lowlands, sunlight reaches the forest floor in bright shifting patches, moving with the wind in the canopy above. 41:16 Speaker A In the cloud forest zone, the light is more diffuse, filtered through mist as much as through leaves, and it has a quality that is hard to describe precisely. 41:26 Speaker A Softer, maybe, or more even, without the sharp contrasts of direct sunlight. The mist is persistent. 41:34 Speaker A Not fog, exactly, but a low-moving cloud that settles into the upper valleys and ridges of the Baudo's higher elevations, and does not always lift, even in the middle of the day. 41:46 Speaker A It drips from leaves. It condenses on your clothing and your skin. It makes everything feel slightly damp in a way that is not unpleasant, but is very constant. 41:56 Speaker A Visibility in the cloud forest can be quite limited. Not the dramatic zero visibility of a mountain storm, but a gentle narrowing of the world to the trees immediately around you, the ridge above dissolving into white. 42:10 Speaker A Researchers who have worked in cloud forest environments often describe a particular kind of intimacy that comes from this reduced visibility. 42:20 Speaker A The forest becomes smaller, more enclosed, and you pay more attention to what is directly in front of you because the middle distance has simply disappeared. 42:29 Speaker A The temperature drops noticeably as you climb. The Baudó's highest point, Alto del Buey, sits at around 1,810 m, which is not extreme altitude by Andean standards, but in the context of a region where the lowlands are hot and 42:45 Speaker A humid year-round, the difference is real. The cloud forest zone can feel genuinely cool, particularly at night, and the combination of moisture and reduced temperature creates conditions that are ideal for certain kinds of life. 42:59 Speaker A Mosses ferns orchids bromeliads the kinds of plants that need high humidity and moderate temperatures, and do not tolerate drought at all. 43:11 Speaker A These plants thrive here in a way they cannot in the warmer lowlands below, and their presence transforms the physical texture of the forest. 43:20 Speaker A Branches that would be bare in a drier forest are here encrusted with growth, not just one or two epiphytes, but layered communities of them, each plant growing on or around another. The whole assemblage held together by moisture and 43:34 Speaker A the slow accumulation of organic material. The forest floor in the cloud forest zone is soft underfoot in a way that takes some getting used to. 43:44 Speaker A It is not muddy exactly, though mud is certainly present. It is more that the ground itself seems to have a depth to it. 43:51 Speaker A A deep layer of decomposing leaves, mosses, and organic matter that gives slightly when you step on it, like walking on a very dense sponge. 44:01 Speaker A This layer is biologically active in ways that are not immediately visible. Fungi are everywhere in it, breaking down dead material and moving nutrients through the soil in networks that connect tree roots across large distances. 44:16 Speaker A Invertebrates beetles millipedes mites springtails are present in extraordinary densities doing the slow work of decomposition that keeps the forest cycling. 44:29 Speaker A Most of this is invisible to a casual observer. You walk on it without seeing it, but it is what makes everything else possible. 44:37 Speaker A The soundscape of the Bodo cloud forest is one of its most immediately striking qualities, and it is quite different from the lowland forest below. 44:46 Speaker A In the lowland rainforest, the soundscape is dominated by the calls of birds and insects at certain times of day with long periods of relative quiet in between. 44:56 Speaker A In the cloud forest, there is a more constant background sound, the dripping of water from leaves and mosses, the soft movement of mist through the canopy, and underneath all of that, the calls of frogs. 45:09 Speaker A Frogs are audible in the cloud forest in a way they rarely are in the lowlands during the day. 45:15 Speaker A Many of the species that live at elevation in the Bodo call at times and in conditions that lowland species do not, and the result is a kind of ambient biological soundtrack that runs almost continuously. 45:28 Speaker A At night, it intensifies. The frog chorus in a Bodo cloud forest at night is one of those sounds that is genuinely difficult to describe to someone who has not heard it. 45:39 Speaker A Layered, complex, with individual calls weaving in and out of each other in patterns that seem almost structured, though of course they are not structured in any intentional way. 45:49 Speaker A They are simply the acoustic signatures of dozens of species, each calling for its own reasons in a space where sound carries differently because of the moisture in the air. 45:59 Speaker A The birds of the cloud forest are heard more often than they are seen. This is true of tropical forest birds generally, but it is especially true in the Baudó's upper elevations, where the mist and the dense vegetation make 46:12 Speaker A visual observation difficult. Ornithologists working in cloud forests often rely primarily on sound, learning the calls of each species and using those calls to build a picture of what is present without ever seeing the birds directly. In the Baudó, this is the 46:28 Speaker A standard approach, and it requires a level of auditory expertise that takes years to develop. 46:35 Speaker A The calls of some species have been recorded and described. Others, particularly in the less visited parts of the range, may not yet have been systematically documented at all. 46:46 Speaker A The people who know this landscape most intimately are not researchers. They are the Embera and Wounaan communities who have lived in and around the Baudó for centuries. 46:55 Speaker A Their settlements are located along the rivers, the Baudó River and its tributaries, the smaller streams that drain the interior valleys, and they have a relationship with the surrounding forest that is practical, detailed, and accumulated over many generations. 47:12 Speaker A The Embera and Wounaan have names for the plants and animals of the Baudó in their own languages, names that often encode information about the organism's behavior, habitat, or use that is not captured in any scientific description. 47:26 Speaker A They know which plants are toxic and which are medicinal. They know where certain animals are found and at what times of year. They know the trails through the interior of the range, the ones that are not on any 47:36 Speaker A map, that follow ridges and stream valleys in ways that make sense only if you know the terrain from the inside. 47:43 Speaker A This knowledge is not simply traditional in the sense of being old. It is continuously updated, practically applied, and in many cases more detailed than anything available in the scientific literature. 47:55 Speaker A Ethnobotanists who have worked with Embera communities in the Chocó have documented hundreds of plant uses, medicinal preparations, construction materials, food sources, dyes, poisons for hunting. 48:09 Speaker A Many of which involve species that are either poorly described in the botanical literature or not described at all. 48:15 Speaker A The gap between what Embera and Wounaan communities know about the Baudó's biology and what appears in peer-reviewed journals is not a small gap. It is very large and it represents a kind of knowledge that cannot simply be reconstructed from field surveys 48:29 Speaker A alone. There is a concept in conservation biology called biocultural diversity. The idea that biological diversity and cultural and linguistic diversity tend to occur together and that the loss of one often accompanies the loss of the other. 48:46 Speaker A The Chocó is one of the clearest examples of this pattern anywhere in the world. 48:52 Speaker A The same conditions that produced extraordinary biological richness, isolation, stability, high rainfall, complex habitat structure also allowed distinct human cultures to develop in relative separation from broader regional patterns. 49:09 Speaker A The Embera and Wounaan languages are not closely related to the major language families of South America. 49:15 Speaker A They are the products of long cultural development in a specific place and they carry within them a record of human engagement with that place that stretches back further than any written document. What makes this particularly relevant to the Baudó specifically is 49:31 Speaker A that the indigenous communities of the region have access to parts of the range that outside researchers almost never reach. 49:39 Speaker A The interior ridges, the upper valleys, the cloud forest zones above the main river systems. 49:45 Speaker A These are places that Embera hunters and gatherers have traveled through for generations and their accounts of what lives there include animals and plants that have not been recorded by formal surveys. 49:57 Speaker A Some of these accounts describe things that are easily matched to known species. Others describe things that are hard to place, behaviors or physical characteristics that do not quite fit any described species. And while such accounts must be treated carefully, they 50:12 Speaker A are not easily dismissed in a region where new species are still being formally described from specimens collected decades ago. 50:20 Speaker A The communities also face pressures that are changing their relationship with the forest and in some cases limiting their ability to maintain the knowledge systems that have developed over centuries. Illegal gold mining is widespread along the rivers of the Chocó 50:35 Speaker A and it brings with it mercury contamination, habitat destruction, and social disruption. Logging affects the lowland forest around the base of the Baudó. 50:46 Speaker A Displacement, sometimes from economic pressure, sometimes from the legacy of Colombia's internal conflict, has moved some community members away from the areas their families have historically occupied. 51:00 Speaker A When a family leaves the river valley where they have lived for generations, the accumulated knowledge of that particular place, which plants grow where, which animals use which trails, where the water is clean and where it is not, does not automatically transfer. It 51:16 Speaker A tends to dissipate. This is worth sitting with for a moment because it is easy to think of the Baudó's biological richness as something fixed, a set of species that exist in the forest and will continue to exist there 51:30 Speaker A regardless of what happens to the human communities nearby. But the relationship is more entangled than that. The Embera and Wounaan communities have shaped the forest in subtle ways over centuries. 51:42 Speaker A Through selective harvesting, through the management of certain plant species, through practices that have affected which animals are present and in what numbers. And they hold knowledge that in practical terms make scientific work in the region possible. 51:58 Speaker A Outside researchers who have managed to conduct surveys in the Baudó interior have almost always done so with the assistance of local guides whose knowledge of the terrain was essential to the work. Without that knowledge, the forest is not impenetrable, but it is 52:13 Speaker A significantly harder to navigate. And the probability of finding specific habitats or species drops considerably. 52:21 Speaker A So, when you think about what the Baudó is like as a place, not as a set of coordinates or a species count, but as an actual landscape that exists in the world, it is impossible to separate the forest 52:34 Speaker A from the people who have lived in it. The cloud forest dripping with moss, the frog calls at night, the mist settling into the upper valleys, the soft forest floor, the birds heard but not seen. 52:49 Speaker A All of this exists in a context that includes the Embera family traveling by canoe on the Baudó River, the Wounaan community whose members know the name and use of every plant on a particular ridge, the knowledge that has accumulated over 53:03 Speaker A generations and that is in some places and for some families under real pressure right now. 53:09 Speaker A It is a place that is very much alive in every sense, biologically, culturally, ecologically, and it has been this way for a long time. 53:18 Speaker A The question that emerges naturally from spending any time thinking about the Baudó is not just what lives there, but what specifically has isolation and rainfall and time produced in those cloud forests. 53:31 Speaker A And for that, you have to start looking at the species themselves, the birds and frogs and plants and mammals that the Baudó has made its own, the creatures that exist here and nowhere else on Earth. 53:43 Speaker A So, let us start with the birds. There is a reason ornithologists tend to be the first scientists to document what makes a place biologically unusual. 53:52 Speaker A Birds are visible. They call. They move through the canopy in ways that make them findable, at least in principle, even in dense forest. 54:00 Speaker A They have been collected and cataloged by naturalists since the 18th century. And the global database of bird species, while still not complete, is far more developed than comparable databases for frogs or beetles or plants. If you want to know whether a place has produced 54:16 Speaker A something found nowhere else on Earth, the birds are usually the first group to tell you. And in the Baudó, they tell you quite clearly. 54:25 Speaker A BirdLife International has designated the broader Chocó region as an endemic bird area, one of roughly 218 such areas identified globally, defined as places where two or more bird species with naturally restricted ranges overlap. 54:42 Speaker A The Chocó endemic bird area contains more than 60 bird species found nowhere else in the world. 60. 54:50 Speaker A That is not a number that comes from a particularly generous definition of endemism. Those are species whose entire global range fits within this relatively narrow strip of Pacific Colombia and adjacent areas. 55:02 Speaker A The Baudó sits at the core of this zone. And while it shares some of its endemic birds with the surrounding Chocó lowlands, it has contributed several species that are particularly associated with its specific elevations and habitats. 55:16 Speaker A The Baudó Guan is probably the most symbolically significant of these. Its scientific name is Penelope ortoni, and it belongs to a family called the Cracidae, large, turkey-like birds that live in tropical forest across the Americas. 55:30 Speaker A Guans are not small animals. The Baudó Guan is roughly the size of a large domestic chicken, dark brownish-black across most of its body with a bare red throat patch and a white-flecked breast. 55:43 Speaker A It moves through the forest canopy and a mid-story feeding on fruit and it is loud enough that its presence in an area is not usually subtle. 55:52 Speaker A In the lowland forests of the Pacific coast, it was once presumably common. It is not common now. 55:58 Speaker A The Baudó Guan is currently listed as critically endangered by the IUCN and one of the primary reasons is hunting. 56:05 Speaker A It is large enough to be worthwhile as food, approachable enough to be taken with relatively simple methods, and slow reproducing enough that populations do not recover quickly from pressure. 56:16 Speaker A Its range is restricted to the Baudó and adjacent Pacific lowlands of Colombia and extreme northwestern Ecuador. 56:24 Speaker A A range that was never enormous and has shrunk considerably. There are no reliable population estimates, which is itself a kind of statement about how little monitoring has been done. 56:36 Speaker A What is known is that every survey that has attempted to assess its status has found it to be scarce, localized, and in decline. 56:46 Speaker A The Baudó Oropendola is a different kind of bird entirely. Less immediately dramatic in its conservation status, but no less interesting as a product of the region's isolation. 56:56 Speaker A Psarocolius cassini belongs to the family Icteridae. The same broad group that includes orioles and blackbirds. Nor opendolas as a group are remarkable birds. 57:07 Speaker A They are large, considerably larger than a typical songbird. And they build extraordinary hanging nests. Long woven pouches that dangle from the outer branches of tall trees. 57:18 Speaker A Sometimes dozens of them clustered together in a single colony. The Baudó Oropendola is a bird of the Chocó lowlands and lower slopes. Glossy black with a chestnut back and a pale bill. And its range is tightly restricted to the Colombian Pacific 57:34 Speaker A coast and adjacent areas. It is not the rarest bird in the region, but it is one of the clearest examples of how the Chocó and Baudó have produced species that simply do not exist anywhere else. 57:47 Speaker A Not because conditions elsewhere are hostile to them, but because the combination of isolation and time here produced something that never spread beyond its origin point. 57:57 Speaker A What is striking about the Baudó's bird endemism is not just the number of species, but the pattern of how they were discovered. 58:05 Speaker A Many of the Chocó's endemic birds were first described in the late 19th and early 20th centuries, collected by natural history expeditions that were passing through rather than systematically surveying. 58:17 Speaker A The ornithologist Frank Chapman, working in the early 20th century, documented several Chocó endemics from specimens collected by field collectors working on his behalf. 58:28 Speaker A These were often single specimens or small series, collected from localities that were not always precisely recorded, and the descriptions that followed were based on what was in hand rather than any broader understanding of the species ecology or range. 58:43 Speaker A The result is that for many of these birds, the foundational scientific literature is thin, a formal description, a type specimen in a museum drawer somewhere, and not much else for decades afterward. Access has always been the limiting factor. 58:59 Speaker A The Baudó is not a place where ornithologists have been able to set up long-term monitoring stations or conduct the kind of systematic point count surveys that produce reliable population data. 59:11 Speaker A The surveys that have been done tend to be short, a few weeks at most, and they tend to cluster around the more accessible lower elevations near the Baudó River, rather than penetrating the cloud forest zone higher up. 59:25 Speaker A This means that even for birds, the most surveyed group in the region, the picture is incomplete. There are almost certainly bird species in the upper Baudó that are rare enough, or secretive enough, or high enough in elevation, that they have been missed by the 59:40 Speaker A surveys conducted so far. The cloud forest zone in particular, that misty dripping upper belt of the range, has received very little ornithological attention. 59:52 Speaker A And cloud forests globally have a consistent record of harboring species that lowland miss entirely. One useful way to think about this is to consider what happens when someone does manage to get into the Baudó's higher elevations with the right equipment and enough 60:07 Speaker A time. The ornithologist Gary Stiles, who spent decades working on Colombian birds and co-authored the foundational field guide to the birds of Colombia, documented species in the Chocó region that had been effectively invisible to science simply because no one had been in the 60:23 Speaker A right place at the right time with a tape recorder and a notebook. The Chocó has repeatedly produced range extensions, species found significantly outside their previously known ranges, and occasionally genuine new records or new species, not because the birds 60:41 Speaker A suddenly appeared, but because the surveys finally reached them. The Baudó's interior is the kind of place where this pattern is likely to continue. 60:50 Speaker A There is also the matter of subspecies and cryptic species, a category that matters more than it might initially seem. Across the Chocó, there are numerous bird populations that have been classified as subspecies of more widespread species, but that show enough 61:05 Speaker A genetic divergence to potentially qualify as distinct species under modern taxonomic standards. Advances in DNA analysis over the past two decades have repeatedly elevated Chocó subspecies to full species status, effectively adding to the endemic count without anyone having to physically 61:26 Speaker A discover a new bird in the forest. The Choco Tapaculo, the Choco Vireo, the Stub-tailed Spadebill, these are among the species that have been split from broader complexes in recent years, and the process is ongoing. 61:41 Speaker A Some of the birds currently flying around the Baudó's cloud forest are probably carrying enough genetic distinctiveness to warrant their own species names. 61:49 Speaker A We just have not done the work yet to confirm it. Beyond the headline endemics, the Baudó sits within a broader zone of extraordinary bird diversity that rewards attention at every level. The region holds multiple species of antbird, small, insect-eating birds of 62:07 Speaker A the forest interior that are among the most diverse and poorly understood groups in the Neotropics. 62:12 Speaker A It holds woodcreepers, foliage-gleaners, and a suite of understory species that are difficult to see and difficult to survey, but they collectively represent an enormous amount of evolutionary history packed into a relatively small area. 62:27 Speaker A Hummingbirds are particularly well represented in the Chocó with several endemic species, including the Rufous-cheeked Hummingbird and the Ember-fronted Hummingbird, both of which are found in the cloud forest zone that includes the upper Baudó. 62:42 Speaker A These are birds that most people outside of serious ornithological circles have never heard of, but they are real, specific, and irreplaceable products of exactly the kind of long isolation in a wet, stable, productive environment that the Baudó has provided. 62:59 Speaker A It is worth pausing on what irreplaceable actually means in this context. When a species exists only in one place, only in the Baudó and nowhere else on Earth, the loss of that species is not a subtraction from a global population 63:13 Speaker A that continues elsewhere. It is an ending. The Baudó Guan, if it goes extinct, does not leave behind a population in some other forest that can eventually recolonize or that represents the same evolutionary lineage. 63:29 Speaker A It takes with it whatever genetic history, whatever behavioral adaptations, whatever ecological relationships it has developed over the course of its existence as a distinct species. 63:39 Speaker A That is true of every endemic species anywhere, but it has a particular weight in a place like the Baudó where the endemics are numerous and the monitoring is minimal. 63:49 Speaker A The birds are the most visible evidence of what isolation has done here. They are the group where the record is most developed, where the names are most established, where the conservation assessments are most complete, even if complete in this case still 64:03 Speaker A means incomplete in absolute terms. They are the group that drew the first scientific attention to the Baudó's biological distinctiveness, and that continues to draw ornithologists willing to make the difficult journey into the range. 64:18 Speaker A But they are also, in a meaningful sense, the surface layer of something much deeper. 64:23 Speaker A Birds are conspicuous. They announce themselves. They can be found with patience and a good ear. 64:29 Speaker A The groups that cannot announce themselves, the frog sitting motionless on a wet leaf in the dark, the plants growing in a cloud forest hollow that no survey team has ever walked through, the small mammals moving through the undergrowth at night, 64:44 Speaker A those groups have a story that is, if anything, even more extraordinary. And the frogs, in particular, have something to say about the Baudó that no other group can quite match. 64:55 Speaker A Colombia has more amphibian species than any other country on Earth. That is not a loose claim or a rough estimate. 65:02 Speaker A It is a documented fact, confirmed by the most recent assessments, and the number keeps shifting upward as new species are described. 65:11 Speaker A As of the most recent tallies, Colombia hosts over 800 amphibian species, and that figure is almost certainly an undercount. 65:19 Speaker A New species are described from Colombian material every year. Some of them are named from specimens that have been sitting in museum drawers for decades, finally getting the careful morphological and genetic attention they deserve. 65:33 Speaker A Others come from fresh fieldwork in places that had not been surveyed before, and a meaningful number of them come from the Chocó. 65:40 Speaker A The reason amphibians accumulate so dramatically in places like the Chocó, and specifically in places like the Baudó, comes down to a few biological facts that are worth understanding, because they explain almost everything about the pattern. 65:54 Speaker A Frogs and salamanders are, as a group, extremely sensitive to their immediate environment. They breathe partly through their skin, which means they need to stay moist. 66:04 Speaker A They cannot regulate their body temperature internally the way mammals and birds can, so they are heavily dependent on the ambient conditions around them. 66:12 Speaker A Most of them cannot survive prolonged exposure to dry air, open ground, or dramatic temperature shifts. 66:19 Speaker A This makes them, in a very real sense, prisoners of the habitat they were born into. 66:25 Speaker A A frog living in a wet cloud forest hollow at 1,200 m elevation on the Baudó is not going anywhere. 66:32 Speaker A It is not going to cross the dry lowland corridor to the east. It is not going to descend through the forest to the warm coast, and it is certainly not going to make it over the Atrato Valley to the 66:42 Speaker A Andes. It will live its entire life, reproduce, and die within a relatively small patch of forest, and its descendants will do the same. 66:53 Speaker A Over thousands of generations, over hundreds of thousands of years, populations of frogs in isolated wet highlands, like the Baudó, diverge from their relatives elsewhere. 67:04 Speaker A They change shape, color, call, and eventually genetics, until they are no longer the same species at all. 67:12 Speaker A The Baudó's combination of persistent humidity, elevation gradient, and geographic isolation is, from a frog's perspective, almost a perfect speciation machine. 67:23 Speaker A The genus Pristimantis is the clearest illustration of this process anywhere on Earth. It is, by current count, the most species-rich vertebrate genus in existence, meaning there are more recognized species of Pristimantis than of any other genus of vertebrates, including 67:40 Speaker A fish. The count exceeds 550 described species, and new ones are added regularly. These are small rain frogs, often no larger than a thumbnail, found across the Andes, the Amazon, and the Pacific coastal ranges of South America. 67:58 Speaker A They do not have a tadpole stage. Their eggs hatch directly into miniature froglets, which means they have no need for standing water to reproduce, and can colonize almost any patch of moist forest, however small or isolated. 68:13 Speaker A This makes them extraordinarily good at occupying ecological niches that other frogs cannot reach, and extraordinarily prone to speciation in isolated highlands. 68:25 Speaker A The Baudó has contributed multiple species to this genus. Some were described in the 1990s and 2000s from specimens collected in the Chocó region. Others have been described more recently, in the 2010s and into the 2020s, as genetic analysis has allowed 68:42 Speaker A researchers to distinguish populations that look almost identical to the naked eye, but are genetically distinct enough to qualify as separate species. 68:52 Speaker A And there are almost certainly more Pristimantis species in the Baudó's cloud forest zone that have not yet been collected, let alone described. 69:01 Speaker A Every survey that has reached the upper elevations of the range has found frogs that required closer examination. 69:08 Speaker A Some of those examinations have ended with the publication of new species names. Others are still ongoing, sitting in the pipeline of museum analysis and genetic sequencing that moves slowly but eventually produces results. Poison dart frogs deserve a mention here. 69:26 Speaker A Not because they are the most numerous or scientifically complex group in the Baudó, but because they are among the most visually striking and because they illustrate something important about how the Chocó functions as a center of amphibian diversity. 69:40 Speaker A The family Dendrobatidae, the poison dart frogs, is heavily concentrated in the Chocó and adjacent regions. 69:48 Speaker A These are the frogs with the vivid coloration, electric blue, bright orange, yellow, red, patterns that advertise their toxicity to anything considering eating them. 70:00 Speaker A The toxins themselves are derived from their diet, specifically from certain mites and insects that the frogs consume, and frogs raised in captivity on different diets lose their toxicity entirely, which is a strange and slightly humbling fact about how chemistry works in the 70:17 Speaker A natural world. In the Chocó, several Dendrobatid species are found, including members of the genus Oophaga, which includes some of the most toxic frogs on Earth. 70:27 Speaker A The Embera people of the Chocó are among the indigenous groups historically associated with the use of frog toxins on blowgun darts, hence the common name poison dart frog. 70:38 Speaker A And the specific species used, Phyllobates bicolor and Phyllobates terribilis, are found in the Chocó lowlands. 70:47 Speaker A The Baudó's higher elevations host different Dendrobatid communities, and the precise distribution of these species in the range's interior is not fully mapped. 70:57 Speaker A What makes the Baudó particularly significant for amphibian science, beyond the raw number of species and the ongoing discovery of new ones, is the condition of its populations. 71:08 Speaker A Amphibians globally are in crisis. The chytrid fungus, Batrachochytrium dendrobatidis, usually shortened to BD in scientific literature, has caused the decline or extinction of over 500 amphibian species since it was first identified in the late 1990s. 71:26 Speaker A It spreads through water, infects the skin of frogs and salamanders, and disrupts their ability to regulate electrolytes, which can cause cardiac arrest. 71:37 Speaker A It has been called the most destructive infectious disease ever recorded in vertebrates, and it has hit the Neotropics particularly hard. 71:46 Speaker A Several species of harlequin frogs in the genus Atelopus, a group once abundant across the Andes and adjacent ranges, have been effectively wiped out in large parts of their range. 71:57 Speaker A The speed and scale of the losses have been difficult to process, even for researchers who have spent their careers studying amphibians. 72:06 Speaker A Isolated populations, like those in the Baudó, exist in a strange dual position in this crisis. On one hand, their isolation makes them potentially more vulnerable in certain ways. 72:17 Speaker A If BD reaches an isolated cloud forest population, there is no refuge population elsewhere to serve as a reservoir or a source of recolonization. 72:28 Speaker A The population either survives or it does not. And if it does not, that species is gone. 72:34 Speaker A There is no backup. On the other hand, the same isolation that makes these populations fragile, also makes them scientifically and conservationally precious. 72:44 Speaker A A population of frogs that has been evolving in isolation for tens of thousands of years carries genetic diversity that does not exist anywhere else. 72:54 Speaker A If BD has not yet reached a particular hollow in the Baudó Cloud Forest, the frogs living there may be carrying immune adaptations or simply genetic variation that could matter enormously to conservation efforts elsewhere. 73:08 Speaker A Researchers working on amphibian disease have become increasingly interested in isolated populations precisely because they represent something like a snapshot of what these species looked like before widespread disease pressure. 73:20 Speaker A And because they occasionally harbor individuals with resistance traits that might be studied and potentially applied more broadly. 73:28 Speaker A The Baudó's inaccessibility, frustrating as it is for field biologists trying to get there, has probably functioned as an accidental quarantine in some areas, slowing the spread of BD into populations that might otherwise already be gone. 73:42 Speaker A There is also a second chytrid fungus, Batrachochytrium salamandrivorans, Bsal, that has devastated salamander populations in Europe and is considered a serious threat to salamander diversity in the Americas if it establishes here. 73:57 Speaker A The Baudó does not have the same salamander diversity as some other regions, but the broader concern about pathogen spread into isolated populations applies across amphibian groups. 74:08 Speaker A And the Chocó's high diversity means that the potential losses are correspondingly high. The practical reality of studying amphibians in the Baudó is worth describing because it shapes what is known and what is not. 74:21 Speaker A Most amphibian surveys are conducted at night when frogs are most active and most vocal. 74:27 Speaker A A survey team, typically small because logistics in the Baudó limit group size, walk slowly through the forest with headlamps, listening for calls and scanning vegetation and leaf litter for movement. 74:41 Speaker A Pristimantis species are often found sitting on low vegetation, leaves, or mossy surfaces motionless until disturbed. 74:50 Speaker A They're small enough that they're easy to miss. A researcher who is not specifically looking for them, moving through the forest for another purpose, would walk past and dozens without noticing. 75:01 Speaker A When a potentially new species is found, it is typically photographed extensively, measured, and a tissue sample is taken for genetic analysis. 75:11 Speaker A In some cases, a specimen is collected for museum deposition, which remains the formal standard for species description, even though it is a practice that generates ongoing ethical discussion in conservation biology. 75:25 Speaker A The tissue sample goes back to a laboratory, often at a Colombian university or an international partner institution, where it enters a queue for DNA extraction and sequencing. 75:37 Speaker A That process takes time. The comparison with existing genetic databases takes more time. If the sequences indicate something genuinely new, a formal description is written, reviewed, and eventually published. 75:51 Speaker A The whole pipeline, from field collection to published species name, can take years. And during that time, the forest where the specimen was found may have changed. 76:01 Speaker A This gap between discovery and documentation is one of the quieter problems in tropical biology. 76:08 Speaker A It means that the published record of species in a place like the Baudó is always lacking behind what has actually been found. 76:16 Speaker A Researchers who have worked in the region know of populations and specimens that are in various stages of analysis, not yet formally described, not yet counted in any official tally. 76:28 Speaker A The number of known species in the Baudó is a floor, not a ceiling. Every expedition that has reached the interior has added to that floor, and no expedition has yet come back empty-handed in terms of amphibian findings. 76:43 Speaker A One way to appreciate what this means is to look at the rate of discovery over time. 76:49 Speaker A In the 1990s, when political instability in the Chocó made fieldwork difficult and dangerous, the stream of new amphibian records from the region slowed considerably. When some researchers were able to return in the 2000s, and particularly after the security situation improved in parts of 77:07 Speaker A the Chocó following the 2016 peace agreement, the rate of discovery picked back up. Rapid assessment surveys, short intensive expeditions designed to document as many species as possible in a limited time, have repeatedly found multiple species new to science in single outings in the 77:27 Speaker A broader Chocó region. A survey in the northern Chocó in 2019 documented dozens of species new to the survey area, including several amphibians requiring further study. 77:39 Speaker A These are not anomalies. They are the expected result of sending trained researchers into a place that has not been adequately surveyed, in a region where the underlying biological diversity is this high. 77:51 Speaker A The Baudó's cloud forest zone, the upper belt of the range where mist settles and mosses cover every surface, is the area where this pattern is most pronounced and least resolved. Cloud forests globally are disproportionately rich in amphibians relative to their area, 78:08 Speaker A partly because the persistent humidity suits frogs so well, and partly because cloud forest habitats tend to be fragmented and isolated in ways that promote speciation. 78:19 Speaker A The Baudó's cloud forest is small, the range does not reach great heights, and the cloud forest zone is compressed between the lowland forest below and the upper ridge above. 78:31 Speaker A But small does not mean poor. Some of the most species-rich amphibian communities on Earth occupy small patches of cloud forest in the neotropics, and the Baudó fits that pattern. 78:44 Speaker A The problem is simply that the surveys have not been thorough enough, long enough, or frequent enough to produce a complete picture. 78:54 Speaker A What has been done has been impressive given the constraints. What remains to be done is larger. 79:02 Speaker A Every time someone has managed to spend a few nights in the Baudó's upper forest with a headlamp and a notebook, something interesting has turned up. 79:10 Speaker A That is not a romantic exaggeration. It is a straightforward description of the track record. 79:17 Speaker A The frogs sitting on wet leaves in the dark up there are, in some cases, species that exist nowhere else, that have been evolving in that specific place for longer than modern humans have existed as a species, and that have 79:30 Speaker A never been formally introduced to science. Some of them are probably calling right now, in the mist, in the dark, in a forest that very few people have ever walked through. 79:40 Speaker A That is a strange and genuinely remarkable thing to sit with. And if the amphibians tell a story of isolation and speciation in dramatic miniature, the plants tell a version of the same story at a scale that is harder to 79:53 Speaker A grasp, but in some ways even more staggering. Oh, the botanical record of the Baudó is, if anything, even more incomplete than the herpetological one, and what has been found in the collections that do exist suggests a level of plant diversity and endemism 80:10 Speaker A that the range has barely begun to reveal. Plants are, in a practical sense, harder to study than frogs. 80:17 Speaker A A frog calls at night and gives itself away. A plant just stands there, patient and silent, waiting to be noticed. 80:27 Speaker A And in a forest as dense and layered and perpetually wet as the Baudó's cloud zone, there is an enormous amount of standing there happening all at once. 80:37 Speaker A Every surface that can support growth does support growth. Mosses cover the bark of trees, and then liverworts cover the mosses, and then small ferns root into the liverworts, and then orchids root into the ferns. The layering is not 80:53 Speaker A metaphorical. It is literal, and physical, and almost architectural. A vertical accumulation of life that builds on itself until the original substrate is buried under generations of growth. 81:07 Speaker A Walking through it, you're surrounded by plants at every level. From the forest floor up through the understory and into the canopy, and distinguishing one species from another, let alone determining whether any of them are new to science, requires a 81:22 Speaker A level of specialized attention that only a trained botanist can bring. The Baudó has not had enough of those. 81:30 Speaker A What it has had, at various points across the 20th century, are collectors. Botanists and natural history expeditions that passed through the broader Chocó region gathered specimens, pressed them, labeled them, and sent them back to herbaria in Bogotá, Washington, New York, and Kew. These 81:50 Speaker A collections were often made under difficult conditions, rough travel, limited time, no way to process specimens in the field beyond basic pressing and drying. 82:01 Speaker A The collectors moved through a landscape they could not fully survey, grabbing what they could reach and noting what they could not. And then those pressed specimens sat in herbaria drawers for years, sometimes decades, waiting for someone with the right expertise to 82:16 Speaker A examine them closely enough to realize what they actually were. This is not an unusual situation in tropical botany. It is, in fact, the standard situation. 82:27 Speaker A The backlog of unexamined or incompletely examined herbarium specimens from tropical regions is enormous, and the number of taxonomists trained to work through that backlog is small. 82:39 Speaker A Funding for herbarium-based taxonomy is limited. The work is slow, and the results, a published description of a new plant species, do not generate the kind of public attention that a new mammal or a new bird might. But, the 82:53 Speaker A results matter enormously to our understanding of what actually exists on this planet. And in the case of the Baudó, those herbarium drawers have been quietly yielding surprises for decades. 83:05 Speaker A Some of the earliest significant botanical collections from the Baudó and surrounding Chocó were made by Ellsworth Killip, an American botanist affiliated with the Smithsonian Institution, who worked in Colombia in the 1920s and 1930s. 83:20 Speaker A Killip collected extensively across the country, and his Chocó material included specimens from the coastal ranges. 83:28 Speaker A Some of what he collected was identified promptly. Other specimens were set aside as unusual, filed under tentative identifications, and revisited much later. 83:39 Speaker A It's not uncommon to find a Baudó plant species whose formal scientific description, published in the 1970s or 1980s, sites a Killip collection number from 1927. 83:51 Speaker A The specimen was there all along. It just took decades for the right botanist to look at it carefully enough. Alwyn Gentry is the name that comes up most often when people discuss botanical work in the Chocó, and for good reason. 84:04 Speaker A Gentry was a botanist at the Missouri Botanical Garden, who spent much of his career studying Neotropical plant diversity. And the Chocó was one of the regions he returned to repeatedly. 84:15 Speaker A His work there in the 1980s produced data that even now is regularly cited in biodiversity studies. 84:23 Speaker A One of the things Gentry did across multiple sites in the Neotropics was conduct standardized 1-ha plot surveys. 84:32 Speaker A Carefully measured areas of forest where every woody plant above a certain stem diameter was identified and counted. 84:39 Speaker A The results from his Chocó plots were striking. In a single hectare of Chocó lowland forest, he recorded over 300 plant species. 84:50 Speaker A To put that in context, a hectare of temperate forest in North America or Europe might contain 20 or 30 tree species. 84:58 Speaker A The Chocó plot had more than 10 times that number in a space roughly the size of two and a half American football fields. 85:05 Speaker A Gentry's data helped establish the Chocó's reputation as one of the most plant-diverse regions on Earth, and it contributed directly to its eventual designation as a global biodiversity hotspot. 85:17 Speaker A What Gentry did not manage to do, what no one has managed to do, is conduct that kind of systematic survey in the Baudó cloud forest zone. 85:27 Speaker A The lowland plots he worked in were already extraordinary. The cloud forest above, more isolated and more difficult to reach, has never received comparable attention. 85:38 Speaker A And cloud forests, as a habitat type, tend to have high rates of plant endemism precisely because of the combination of isolation and specialized conditions they create. The persistent mist, the lower temperatures, the different light quality, the mossy substrate, 85:57 Speaker A these factors favor plants that have adapted specifically to those conditions over long periods, and those adapted plants are often found nowhere else. 86:06 Speaker A The Baudó cloud forest zone, given everything known about the range's geological isolation and the broader richness of the surrounding region, would be expected to have a high density of endemic plant species. The expectation has not been formally tested. The surveys simply have not 86:25 Speaker A happened. What has been collected though, hints strongly at what a thorough survey might find. 86:32 Speaker A Among the plant groups where the Baudó and surrounding Chocó have shown particularly high endemism, orchids are perhaps the most striking. The Chocó is one of the richest orchid regions on Earth, and Colombia as a whole has more orchid species than any other country. 86:48 Speaker A Somewhere in the range of 4,000 species, which is roughly 15% of all orchid species known worldwide. Many of these are restricted to specific elevation bands or specific microhabitats. 87:01 Speaker A The Baudó's cloud forest, with its persistent humidity and mossy tree surfaces, is exactly the kind of environment where epiphytic orchids, those that grow on other plants rather than in soil, reach their highest diversity. 87:15 Speaker A Orchid species in this zone small, inconspicuous, and identifiable only by their flowers, which bloom briefly and unpredictably. 87:25 Speaker A A survey team visiting at the wrong time of year might walk past a hundred orchid species in bloom without ever seeing one flower. 87:34 Speaker A The ones that have been collected and formally described from the Baudó represent a fraction of what almost certainly grows there. Bromeliads follow a similar pattern. The family Bromeliaceae, which includes pineapples at one end of the spectrum and the tank 87:48 Speaker A bromeliads of cloud forests at the other, is heavily represented in the Chocó, and the Baudó specifically has contributed several species that were not known from elsewhere. 87:59 Speaker A Tank bromeliads are particularly interesting ecologically because their leaf bases form small pools of water that serve as habitat for entire communities of invertebrates, small frogs, and even crabs. 88:12 Speaker A Each bromeliad is, in a small way, its own ecosystem. In a cloud forest where hundreds of bromeliad individuals might occupy a single large tree, the cumulative ecological complexity is remarkable. 88:27 Speaker A Some of the frog species found in the Baudó, including certain Pristimantis species, use bromeliad tanks for reproduction. 88:36 Speaker A The plants and the animals are not separate stories. They are the same story, told in different vocabularies. 88:43 Speaker A Palms deserve a mention, too, though they are more characteristic of the lowland and mid-elevation zones than the cloud forest proper. 88:50 Speaker A The Chocó is home to an extraordinary diversity of palm species, and the Baudó region has several that are restricted to the Pacific lowlands of Colombia and adjacent Panama. 89:02 Speaker A The tagua palm, whose seeds produce a hard white material sometimes called vegetable ivory, grows in the lowland forests around the Baudó's base. 89:12 Speaker A The chambira palm is used by Embera and Wounaan communities for weaving, and there are palms in the Chocó that have been collected only once or twice from single locations, whose full range and status remain unclear. 89:26 Speaker A Some of these may have populations in the Baudó foothills that have never been documented. 89:31 Speaker A Then there is the genus Anthurium, which is worth dwelling on for a moment because it illustrates the Baudó's botanical situation particularly well. 89:40 Speaker A Anthurium is a large genus of flowering plants in the arum family, the same family as the common house plant with a waxy red spathe that sits in offices and lobbies around the world. 89:52 Speaker A In the wild, Anthurium species are enormously diverse in form, ranging from small ground-hugging herbs to large epiphytes with leaves nearly a meter long. 90:03 Speaker A The Chocó is one of the global centers of Anthurium diversity with dozens of species, many of them endemic. 90:11 Speaker A New anthurium species have been described from the Chocó region regularly over the past several decades, often from herbarium specimens that have been sitting unexamined or tentatively identified for years. 90:24 Speaker A In 2018, a revision of one group within the genus resulted in several new species being formally named. Some of them based partly on collections made in the Baudó region. 90:35 Speaker A The specimens had been in herbaria for a long time. The names were new. This pattern, old specimens, new names, is one of the defining features of Baudó botany. 90:47 Speaker A It reflects both the richness of what was collected by earlier expeditions and the persistent shortage of taxonomic expertise needed to process those collections. 90:57 Speaker A It also suggests something important about the current state of knowledge. If material collected in the 1940s, 1950s, and 1960s is still yielding new species descriptions in the 2010s and 2020s, then the collections themselves are not yet exhausted. 91:15 Speaker A There are still unexamined or incompletely examined material in herbarium drawers that may contain additional unnamed species. 91:24 Speaker A And beyond the existing collections, there is the cloud forest zone that has never been systematically surveyed. 91:31 Speaker A A belt of habitat where the density of endemic plant species, based on everything known about comparable cloud forests in the Neotropics, is likely to be very high. 91:42 Speaker A The numbers involved in Chocó plant endemism are worth stating plainly. Of the roughly 9,000 to 10,000 plant species estimated to occur in the Chocó bioregion, approximately 25% are considered endemic, found nowhere else on Earth. 91:58 Speaker A That is somewhere between 2,000 and 2,500 plant species that exist only in this region. 92:05 Speaker A The Baudó, as an isolated range within that region, with its own geological history and its own cloud forest zone, almost certainly contains a subset of species that are endemic not just to the Chocó, but specifically to the Baudó 92:18 Speaker A itself. How large that subset is, nobody can say with confidence, because the surveys have not been done. 92:26 Speaker A But the logic of isolation, combined with the track record of discovery every time someone looks carefully, points in a clear direction. One other aspect of Baudó botany that does not get discussed as often as it should, is the role of 92:41 Speaker A the forest itself as a physical archive. Old-growth tropical forest stores an enormous amount of biological information in its structure, in the relationships between species, in the chemical compounds plants produce to defend themselves or attract pollinators, in the mycorrhizal networks 92:58 Speaker A that connect root systems underground. Some of the plant species in the Baudó cloud forest produce compounds that have never been chemically analyzed. 93:07 Speaker A Some of them have relationships with specific insects or fungi that have never been observed. 93:13 Speaker A The forest is not just a collection of species, it is a record of evolutionary and ecological processes that took millions of years to develop and that cannot be reconstructed once the forest is gone. 93:25 Speaker A This is not an abstract concern in the Baudó. The lowland forest around the range's base has been significantly reduced by logging and agricultural conversion. 93:35 Speaker A The cloud forest zone has been more protected by its elevation and inaccessibility, but that protection is not permanent and it is not guaranteed. 93:44 Speaker A What makes the botanical situation in the Baudó feel both urgent and in a strange way hopeful, is precisely this gap between what is known and what the evidence suggests is there. 93:55 Speaker A Every herbarium specimen that turns out to be a new species is a small proof that the forest has been holding things in reserve waiting to be properly seen. 94:06 Speaker A Every plant that blooms briefly in the midst of the upper Baudó and drops its flowers unobserved is a reminder that the inventory is far from complete. 94:16 Speaker A The gap is large. The tools available to close it, better sequencing technology, digitized herbarium records that can be compared across institutions, eDNA methods that can detect plant diversity from soil samples, are improving. And the knowledge held by Embera and Wounaan communities who have 94:37 Speaker A lived with these plants for generations and who know things about their behavior, their uses, and their locations that no herbarium record captures, represents a form of documentation that formal science has barely begun to access. 94:51 Speaker A The plants are one thread in the Baudó story and a long one. But there are other threads running alongside it, quieter and less visible, moving through the forest at night or sheltering in the canopy, or crossing the ridge in the early morning mist. 95:07 Speaker A The mammals of the Baudó have their own story and it is one that the scientific record has captured only in outline. 95:14 Speaker A Large shapes in the dark, tracks in soft mud, reports from communities who know the forest in ways that camera traps and survey forms cannot fully replicate. 95:25 Speaker A So let us follow those shapes into the forest. The mammals of the Baudó are in some ways the hardest part of this story to tell precisely because they are the group people most expect to know about. 95:37 Speaker A We tend to think of mammals as the well-documented kingdom, the charismatic megafauna, the animals that appear on nature documentary posters and conservation campaign logos. 95:48 Speaker A And it is true that the large mammals of the Colombian Pacific are not unknown to science. 95:54 Speaker A But known in the broad sense and understood in any detailed location-specific sense are very different things. 96:01 Speaker A And in the Baudó, that gap between the two is wider than you might expect. 96:06 Speaker A Start with the jaguar. Panthera onca is the largest cat in the Americas and one of the most recognizable animals on the continent. 96:15 Speaker A It is present in the Chocó and almost certainly moves through the lower slopes of the Baudó range. 96:22 Speaker A Indigenous communities in the region have reported jaguar encounters for generations. There are tracks. There are accounts. 96:30 Speaker A But formal camera trap surveys in the Baudó interior are extraordinarily rare. Not rare in the sense of producing few jaguar photographs, but rare in the sense of barely having happened at all. 96:43 Speaker A The terrain makes deployment difficult. Getting camera traps into the interior requires days of travel and significant logistical effort. 96:51 Speaker A Maintaining them, replacing batteries, retrieving data cards, all of it requires repeated trips that most research teams simply have not been able to sustain. 97:02 Speaker A What this means practically is that the jaguar is present in the Baudó in the way that many things are present there. 97:08 Speaker A Acknowledged, plausible, documented in outline, but not monitored in any meaningful continuous way. Nobody knows the population size. Nobody has a reliable estimate of territory ranges or corridor use in this specific range. 97:26 Speaker A The jaguar is there. Beyond that, the record becomes thin. The same is broadly true for the Baird's tapir, Tapirus bairdii, which is the larger of the two tapir species that may occur in northern Colombia. 97:40 Speaker A Tapirus terrestris, the South American or lowland tapir, is the more commonly recorded species in the region. 97:47 Speaker A Baird's tapir has a range centered in Central America and reaches into northwestern Colombia, which means the northern end of the Baudó's range falls within or near the possible overlap zone between the two species. 98:01 Speaker A Whether both occur in the Baudó and if so, where their ranges interact is not well established. 98:06 Speaker A Tapirs are large, slow-moving, and generally not difficult to detect when surveys are actually conducted. They leave obvious tracks in mud, they use river margins regularly, and they are well-known to indigenous hunters. 98:21 Speaker A But again, the formal survey record for the Baudó specifically is sparse. Community knowledge fills in some of the picture, but has not been systematically compiled in a way that allows scientific conclusions. 98:34 Speaker A Giant anteaters, Myrmecophaga tridactyla, are recorded from the Chocó lowlands. Several species of peccary, the white-lipped peccary, Tayassu pecari, and the collared peccary, Pecari tajacu, are present in the region and are important both ecologically and as a food source for local communities. 98:56 Speaker A White-lipped peccaries travel in large herds and are known to local Emberá hunters well. They are not unknown animals, but their population trends in the Chocó, including the areas adjacent to the Baudó, are poorly tracked. 99:10 Speaker A White-lipped peccaries are considered vulnerable globally, and in many parts of their range they have declined significantly due to hunting pressure and habitat loss. 99:20 Speaker A Whether the Baudó's relative inaccessibility has provided them some buffer is a reasonable hypothesis, but it is not something the data can confirm. 99:29 Speaker A The large mammals, then, are present but barely monitored. That is one part of the story. 99:35 Speaker A The other part is more interesting from a purely scientific standpoint, and it involves the animals that most people never think about when they imagine a tropical rain forest. Bats, rodents, small marsupials. These are the groups that occupy the lower end of the mammal 99:52 Speaker A size spectrum and they are consistently and across tropical regions worldwide the most likely to contain species that science has not yet formally described. 100:02 Speaker A This is not a guess. It is a pattern that plays out repeatedly in surveys of poorly explored tropical habitats. 100:10 Speaker A When researchers conduct thorough small mammal surveys in places like the Baudó using mist nets for bats, live traps for rodents and marsupials, careful morphological examination, and increasingly genetic analysis, they find things that do not match any known species. 100:28 Speaker A Sometimes the difference is subtle. Sometimes it is not. Bat surveys in the Colombian Pacific have produced new species repeatedly over the past few decades. 100:39 Speaker A Columbia as a whole has one of the highest bat diversities in the world with well over 200 species recorded and the Chocó is a significant contributor to that total. 100:51 Speaker A The region's combination of lowland forest, river systems, and elevated cloud forest creates a layered set of habitats that different bat species partition in different ways. Some foraging over water, some in the forest interior, some at the canopy edge, some 101:08 Speaker A in the cloud forest mist. Different elevations support different communities, which is exactly the kind of habitat gradient that tends to produce species that are endemic to a specific zone. 101:20 Speaker A In the Baudó, where the elevation gradient runs from sea level to around 1,800 m across a relatively short horizontal distance, those zones are compressed. A bat species adapted to foraging in the cool, misty upper forest may have very little 101:38 Speaker A reason to descend into the warmer lowlands and vice versa. Over enough generations, enough time, that kind of habitat fidelity can produce genuine reproductive isolation and eventually distinct species. 101:53 Speaker A The rodents of the Baudó are even less well documented than the bats. Small rodents, mice, rats, and their relatives in the family Cricetidae are the most species-rich group of mammals globally, and in South America they are particularly diverse. 102:11 Speaker A The Chocó region has a number of endemic rodent species, and the Baudó's isolated highland zone is exactly the kind of habitat where additional undescribed species would be expected. 102:24 Speaker A The problem is that rodent taxonomy is genuinely difficult. Many species look very similar externally. Distinguishing them reliably requires either detailed morphological measurements, skull shape, tooth structure, the arrangement of specific anatomical features, or genetic analysis, or ideally both. 102:44 Speaker A This means that even if a researcher collects a small brown mouse in the Baudó cloud forest, determining whether it is a known species or something new requires laboratory work that may take months or years. 102:57 Speaker A The collecting is hard enough. The analysis afterward is another challenge entirely. Small marsupials present a similar situation. 103:06 Speaker A South America has a diverse marsupial fauna that is largely invisible to most people because it consists not of kangaroos and wombats, but of small, mouse-like creatures, the opossums and their relatives in the order Didelphimorphia. 103:21 Speaker A Several species occur in the Chocó and some are endemic to the Pacific lowlands or adjacent slopes. 103:27 Speaker A Whether the Baudó has its own marsupial endemics is unknown. The surveys that would answer that question have not been done. 103:35 Speaker A What makes this situation particularly striking is the contrast with other groups. Birds in the Baw well documented because ornithologists can survey them using binoculars and sound recordings without needing to physically capture or handle animals. 103:50 Speaker A A skilled birder with a good microphone can produce a species list for a location in a few days of careful work. 103:57 Speaker A Amphibians require more effort, but are still relatively tractable. They're often vocal, often abundant, and can be found by searching at night with headlamps along stream banks. 104:08 Speaker A Plants can be photographed and pressed and sent to specialists. But small mammals require trapping, handling, measurement, and often genetic sampling. 104:19 Speaker A They require expertise that is rarer, equipment that is heavier, and analysis that takes longer. 104:26 Speaker A And they require the kind of sustained survey effort, multiple nights of trapping across multiple habitat types, that is genuinely difficult to organize in a place as logistically challenging as the Baw Dw. 104:40 Speaker A There is one additional layer to the mammal story that is worth pausing on. The Baw Dw's elevation gradient creates not just different habitat zones, but different mammal communities that may interact in interesting ways at their boundaries. 104:54 Speaker A The transition zone between lowland rainforest and cloud forest, roughly between 500 and 900 m in the Baw Dw, is a habitat that is neither fully one thing nor the other. 105:06 Speaker A It has elements of both. Species from the lowlands may push up slope during certain seasons. 105:13 Speaker A Species adapted to the cooler upper forest may descend during dry periods. This transitional zone is often where the most interesting ecological interactions happen. 105:23 Speaker A And it is also, in the Baw Dw, one of the least surveyed areas. Most of the limited scientific work that has been done in the range has focused either on the lowland margins, where access is somewhat easier, or on the upper 105:36 Speaker A reaches, which attract researchers interested in cloud forest endemism. The middle slopes have received relatively little attention. 105:45 Speaker A The indigenous communities of the Baudó, the Embera and Wounaan, whose knowledge of the forest will be discussed more fully later in this story, are often the most reliable source of information about mammals in the range. 105:58 Speaker A They know which animals use which areas, which species appear seasonally, which are rare, and which are common. 106:06 Speaker A Some of this knowledge has been documented in ethnographic and ethnobiological studies. Much of it has not. And some of what community members describe, animals they've seen or heard, but the researchers have not been able to confirm, may represent species that are either 106:21 Speaker A very rare, very cryptic, or genuinely undescribed. This is not a romantic notion. It is a documented pattern in other poorly surveyed tropical regions, where community reports of unfamiliar animals have occasionally led to the formal discovery of new species. 106:39 Speaker A The Baudó is exactly the kind of place where that kind of discovery remains possible. 106:44 Speaker A Camera traps, when they have been deployed in the broader Chocó region, have produced records of species in areas where their presence was not previously confirmed. 106:54 Speaker A A jaguar photographed in a location where it had not been formally recorded. A puma, Puma concolor, moving through a corridor that researchers had not previously identified as used. 107:06 Speaker A These are not discoveries of new species, but they are reminders that even for large, well-known mammals, the distribution picture in this region is incomplete. 107:15 Speaker A If that is true for jaguars and pumas, it is almost certainly more true for the small mammals that are harder to detect and less frequently looked for. 107:23 Speaker A The practical reality of mammal research in the Baudó comes down to access and time. 107:29 Speaker A A team that could spend three or four weeks in the interior of the range, deploying mist nets at multiple elevations, running small mammal traps every night, collecting tissue samples for genetic analysis, and working closely with local community members to 107:44 Speaker A document their knowledge, would almost certainly produce significant findings. New bat species are a realistic expectation based on the track record of similar surveys elsewhere in the Chocó. 107:56 Speaker A New rodent species are possible. Better distribution data for large mammals would be valuable. But organizing and funding that kind of expedition is not straightforward. 108:07 Speaker A The logistics are formidable. The cost is significant. And the Baudó, despite everything that makes it scientifically important, has not attracted the level of institutional attention that would make such surveys routine. This is one of the quieter frustrations of working in a place like 108:25 Speaker A this. The scientific case for intensive mammal surveys in the Baudó is strong. The evidence base, the endemism in birds, amphibians, and plants, the isolation, the elevation gradient, the track record of discovery in adjacent areas, all points toward a mammal fauna that is 108:44 Speaker A richer and more distinctive than the current record suggests. But pointing at a gap in knowledge and filling it are two very different things. And in the Baudó, the gap remains large. 108:58 Speaker A What is known about the mammals of this range is, in a sense, a rough sketch drawn from a distance. 109:05 Speaker A Large forms identified, broad presence confirmed, specific details missing. The sketch is not wrong, exactly, but it is incomplete in ways that matter. 109:20 Speaker A And the incompleteness is not evenly distributed. The large animals are the clearest part of the picture. The small ones are nearly invisible. Somewhere between those two ends of the size spectrum in the midst of the upper cloud forest or 109:35 Speaker A the tangled undergrowth of the transition zone, there are almost certainly animals moving through the dark that have never been formally seen by science. 109:44 Speaker A The history of who has actually gone into the Baudó to look, when they went, what they were able to do, and what interrupted the effort for decades is its own kind of story. And it explains a great deal about why the gaps 109:58 Speaker A described in this section and in the sections before it are as large as they are. 110:03 Speaker A To understand why those gaps exist, you have to go back and look at the actual history of who came to the Baudó, when they came, and what conditions they were working under when they did. 110:15 Speaker A Because the scientific record of this range is not just thin, it is thin in a very specific way, shaped by a very specific set of circumstances. 110:25 Speaker A An understanding that shape makes the current state of knowledge feel less like a mystery and more like an inevitable consequence of history. 110:34 Speaker A The earliest formal natural history collections from the Chocó region came in the late 19th and early 20th centuries, mostly organized by American and European institutions that were systematically sending collectors through tropical regions to build museum holdings. 110:50 Speaker A The Smithsonian Institution, the American Museum of Natural History, the Field Museum in Chicago, these institutions funded collecting expeditions that moved through Colombia's Pacific lowlands, gathering bird skins, pressed plant specimens, preserved reptiles and amphibians, and pinned insects. 111:10 Speaker A The collectors were often skilled naturalists, but they were also working quickly, covering enormous distances, and focused primarily on the lowland river systems where travel was easier. 111:22 Speaker A The Baudó interior, already difficult to reach, received comparatively little attention. What specimens did come from the range were often collected near the margins, from the lower slopes accessible from the Baudó River, or from the coastal foothills near what is now Utria 111:39 Speaker A National Park. The cloud forest zone of the upper range was largely passed over. Some of those early collections, however, turned out to be remarkably significant. 111:50 Speaker A Specimens collected in the 1920s and 1930s from the broader Chocó region sat in museum drawers for decades before being examined carefully enough for researchers to realize they represented species that had not been formally described. 112:05 Speaker A This is not unusual in natural history. It is actually a well-documented phenomenon. Museum collections function as a kind of slow-release scientific archive. 112:15 Speaker A A bird skin collected in 1928 might be examined again in 1965 and found to belong to a subspecies, then re-examined in 2003 and elevated to full species status based on new genetic criteria. 112:32 Speaker A The Chocó collections have gone through several rounds of this kind of reanalysis, and each round has produced revisions to the known species list. 112:41 Speaker A The Baudó's contribution to those collections was modest compared to the lowland Chocó, but even the modest contribution has generated scientific discussion that continues today. 112:52 Speaker A The mid-20th century brought a slightly more systematic approach to botanical collecting in the region. 112:58 Speaker A Ellsworth Killip, an American botanist associated with the Smithsonian, worked extensively in Colombia and collected plant specimens from the Pacific region during the 1930s and 1940s. 113:12 Speaker A His collections included material from the Chocó, some of it from areas adjacent to the Baudó. Like the earlier zoological collections, many of Killip's specimens took years or decades to be fully processed and described. Some of the plants he collected were recognized 113:28 Speaker A as new species only long after his fieldwork was completed when specialists working on particular plant families finally got around to examining the Chocó material in detail. 113:39 Speaker A This is a pattern that repeats itself throughout the history of botanical work in this region: collection, storage, delayed analysis, eventual description. 113:50 Speaker A The pipeline between field collection and formal publication has always been long, and the Chocó's collections have been no exception. 113:58 Speaker A The figure who probably did more than anyone else to bring scientific attention to the biological richness of the Colombian Pacific was Alwyn Gentry, a botanist based at the Missouri Botanical Garden, who worked extensively in the Chocó during the 1980s. 114:14 Speaker A Gentry was extraordinary in his energy and his capacity for systematic work. He could identify plants at a pace that other botanists found almost implausible, and he used this skill to conduct rapid diversity assessments. 114:28 Speaker A Small plots, intensively surveyed, producing species counts that gave a statistical picture of forest richness. 114:37 Speaker A His work in the Chocó produced some of the most striking numbers in the history of tropical botany. 114:42 Speaker A In a single 1-ha plot in the Chocó lowlands, he documented more than 300 plant species. 114:50 Speaker A That kind of density is difficult to fully absorb. 300 species in an area roughly the size of a city block. 114:58 Speaker A The Chocó was already known to botanists as an important region, but Gentry's work made the scale of its richness undeniable. 115:07 Speaker A Gentry's focus was primarily on the lowland forest. The Baudó cloud forest zone, higher and harder to reach, was not the center of his attention, though he worked in areas that bordered the range. His broader surveys of the Chocó established a 115:21 Speaker A baseline understanding of the region's plant diversity that influenced conservation thinking for years afterward. When Conservation International designated the Chocó-Darién Western Ecuador region as a biodiversity hotspot in the early 1990s, Gentry's data was part of the scientific foundation for 115:40 Speaker A that designation. He died in 1993 in a plane crash in Ecuador along with several colleagues while conducting a rapid biological survey, a loss that the botanical community in the Neotropics felt deeply and that left a gap in the systematic 115:56 Speaker A study of Pacific Colombia that took years to begin filling. The 1990s were, for a number of reasons, a difficult decade for fieldwork in Chocó. 116:06 Speaker A And this is where the history of scientific exploration intersects in a direct and unavoidable way with the history of Colombia's internal armed conflict. By the mid-1990s, the FARC, the Fuerzas Armadas Revolucionarias de Colombia, had a significant presence in 116:22 Speaker A much of the Chocó department. The region's remoteness and its limited state presence made it attractive to armed groups operating outside the law. 116:31 Speaker A Paramilitary organizations were also active in parts of the region. And the Pacific lowlands of Chocó became one of the areas where coca cultivation expanded significantly during the 1990s, bringing with it the violence and instability that accompanied the drug 116:46 Speaker A trade throughout Colombia during that period. For researchers, this meant that fieldwork in the Chocó became genuinely dangerous. 116:54 Speaker A The risks were not hypothetical. Foreign researchers were kidnapped in Colombia during this period. Colombian scientists faced threats. Access to remote areas required navigating not just physical terrain, but the politics of armed groups who controlled movement through the forest and along the rivers. 117:13 Speaker A Some areas that had been accessible to researchers in the 1980s became effectively off-limits by the mid-1990s. 117:20 Speaker A Institutions that had been planning surveys pulled back. Funding agencies became reluctant to support field work in active conflict zones. 117:29 Speaker A The result was a significant and prolonged gap in biological survey work across much of the Chocó, including the Baudó. 117:37 Speaker A This gap lasted in practical terms for roughly 15 to 20 years. It was not absolute. 117:44 Speaker A Some Colombian researchers continued working in safer areas of the department, and some international collaborations continued with strict security protocols. 117:54 Speaker A But the intensive systematic survey work that would have been needed to properly document the Baudó's biodiversity simply did not happen during this period. 118:04 Speaker A The forest was there. The species were there. But the people who would have gone to find them were not able to go safely. 118:11 Speaker A This is one of the more sobering aspects of the Baudó's story. That a significant portion of the knowledge gap in this range is not a product of scientific indifference or lack of funding, but of violence. 118:24 Speaker A The conflict effectively created biological dark age for the region. A period during which the forest continued to evolve and function, but was largely unobserved by science. 118:35 Speaker A The situation began to shift after the peace agreement signed in 2016 between the Colombian government and the FARC. 118:44 Speaker A The agreement did not immediately resolve all security concerns in the Chocó. Other armed groups remained active, and the transition was complicated. 118:53 Speaker A But it opened doors that had been closed for years. Researchers who had been working in safer parts of Colombia began making cautious returns to the Pacific region. 119:03 Speaker A Colombian institutions, particularly the Instituto de Investigacion de Recursos Biologicos Alexander von Humboldt, based in Bogota, began coordinating more fieldwork in the Chocó. International conservation organizations, including Conservation International, conducted rapid assessment expeditions in parts of the Colombian Pacific that had been 119:25 Speaker A inaccessible for years. These post-conflict surveys produced results that were striking precisely because they confirmed how much had been missed. 119:35 Speaker A Rapid Assessment Program expeditions, RAP's as they are known in the conservation biology world, are designed to document biodiversity quickly using teams of specialists working in parallel across different taxonomic groups. 119:49 Speaker A When RAP teams entered parts of the northern Chocó in the late 2010s, they found species new to science, species new to Colombia, and species whose ranges were being confirmed in new locations for the first time. 120:04 Speaker A A single expedition of two to three weeks with a good team was producing dozens of significant records. 120:11 Speaker A This is what happens when you send careful observers into a place that has not been carefully observed for a long time. The Baudó interior, specifically, has had remarkably few formal biological expeditions, even by the standards of the broader Chocó, which is itself not a 120:28 Speaker A heavily surveyed region. Most of what is known about the range's biodiversity comes from collections made at its margins, from surveys of adjacent areas, from community reports, and from the occasional targeted visit by a researcher focused on a particular 120:44 Speaker A group. There has not been, as far as the published record shows, a comprehensive multi-taxa biological survey of the Baudó's cloud forest zone. 120:55 Speaker A Not one that covered birds, amphibians, plants, and mammals together with the kind of systematic effort that would produce a reliable baseline. 121:04 Speaker A The expeditions that have gone there have been small, specific, and often focused on a single group. 121:10 Speaker A They have found things, but they have not found everything, and they have not tried to. 121:17 Speaker A This is not a criticism of the researchers who have worked in the region. Organizing a comprehensive survey of the Baudó is genuinely difficult. 121:26 Speaker A The logistics alone, getting a large team into the interior, keeping them there long enough to do meaningful work, ensuring their safety, arranging the permits, securing the funding, represent a significant undertaking. 121:41 Speaker A Colombian research institutions have limited resources and many competing priorities. International collaboration helps, but it adds its own layers of complexity. 121:51 Speaker A And the Baudó, despite its biological significance, does not have the global name recognition that might attract the kind of large-scale funding that would make a comprehensive survey feasible. 122:04 Speaker A It is not the Amazon. It is not the Galapagos. It is a quiet, wet, low mountain range on a map that most people have never looked at closely. 122:16 Speaker A What the post-2016 period has shown, though, is that when researchers do manage to get into the Chocó with good equipment and clear protocols, they find things. 122:26 Speaker A New Pristimantis rain frogs have been described from Baudó and Chocó specimens collected in the 2010s and early 2020s. 122:33 Speaker A Plant species collected decades ago and stored in herbaria have been formally described as new based on renewed interest in the region's flora. 122:43 Speaker A Acoustic monitoring, recording the soundscape of the forest, and analyzing it for bird and bat calls, has been used in adjacent areas to detect species without requiring direct capture. 122:56 Speaker A And the technique has produced records of species that were not expected in those locations. 123:02 Speaker A Environmental DNA sampling, which involves filtering water or soil for genetic traces of organisms that have passed through, is beginning to be applied in the Chocó, and has the potential to dramatically expand what can be detected during a short field 123:17 Speaker A visit. The tools available to researchers working in the Baudó today are genuinely better than what was available in the 1980s. 123:26 Speaker A Genetic analysis is faster and cheaper. Field recording equipment is lighter and more capable. Camera traps have become smaller, more reliable, and easier to deploy. 123:38 Speaker A Remote sensing, satellite imagery, LiDAR mapping of forest canopy structure, can provide detailed information about habitat without requiring physical access. 123:48 Speaker A These technologies do not solve the access problem, but they mean that a team that does manage to reach the interior of the Baudó can collect more information more quickly than would have been possible in any previous era. 124:02 Speaker A And yet the pace of discovery, while real, is still slow relative to what the Baudó almost certainly contains. 124:09 Speaker A Each expedition that has gone there has found something significant. That is a remarkable track record, and it is also in a way a measure of how much remains. 124:19 Speaker A A place where every visit yields a discovery is a place that has not been visited nearly enough. 124:24 Speaker A The gap in knowledge that was created by decades of conflict, compounded by the pre-existing difficulty of access, and the relative lack of institutional attention, is not going to be closed quickly. 124:37 Speaker A It will require sustained effort, consistent funding, and the kind of long-term commitment that is difficult to maintain in a scientific culture that often rewards novelty over systematic follow-up. 124:49 Speaker A The history of exploration in the Baudó, then, is a history of interruption. Early collections that were never followed up. 124:57 Speaker A A period of more intensive botanical work that ended with the loss of key figures. 125:02 Speaker A A long silence imposed by conflict. A cautious reopening that is still finding its footing. 125:09 Speaker A Each phase has left traces in the scientific record. Specimens in museum drawers, data in field notebooks, published papers that describe a piece of the picture without ever assembling the whole. The picture that emerges from all of this is fragmentary in ways that 125:25 Speaker A go deeper than simple incompleteness. It is fragmentary because the people who might have filled in the gaps were, for years, unable to try. 125:35 Speaker A What makes this history particularly meaningful is that it connects directly to another part of the Baudó story. One that has been present throughout, quietly, in the background of everything discussed so far. The Embera and Wounaan communities who have lived in and around 125:51 Speaker A these mountains for centuries were not subject to the same interruptions. They did not stop knowing the forest because researchers stopped coming. 125:59 Speaker A Their knowledge continued, passed down through generations, accumulating and adapting even during the decades when outside science was absent. 126:09 Speaker A Understanding what that knowledge contains and what it represents is the next part of this story. 126:16 Speaker A The Embera people have lived along the rivers of the Chocó for a very long time. Estimates vary, and the deep history of indigenous settlement in the Pacific lowlands of Colombia is not fully reconstructed. 126:28 Speaker A But what is clear is that communities as the Embera and the Wounaan have been present in this region for centuries, long enough to have developed relationships with the forest that go far beyond simple familiarity. 126:41 Speaker A Their villages sit along the rivers, particularly the Baudó River and its tributaries, where the water provides both transport and food. 126:50 Speaker A The forest around them is not wilderness in the sense that outsider researchers sometimes use the word. 126:57 Speaker A It is a known landscape. It has names. It has history. Different stretches of river, different hillsides, different forest types. All of these carry meaning that has accumulated over generations of living inside them. 127:12 Speaker A This is worth sitting with for a moment because there is a tendency in discussions of remote biodiversity to treat the human presence as incidental. 127:21 Speaker A The forest is described as pristine, untouched unexplored. And then the communities who have been there all along appear as a footnote, or as local guides who help researchers navigate, or as recipients of conservation programs designed elsewhere. 127:37 Speaker A The reality in the Baudó is more complicated and more interesting than that framing allows. 127:43 Speaker A Embera and Wounaan knowledge of the plants in their territory is, by any reasonable measure, extensive. 127:49 Speaker A Ethnobotanical work done in the Chocó, some of it going back decades, though the Baudó interior has been less studied than some adjacent areas, has documented hundreds of plant species used by these communities for purposes ranging from medicine to construction to 128:05 Speaker A food to ceremony. Specific plants are used to treat specific conditions, fevers, skin infections, snake bites, respiratory illness. 128:17 Speaker A Others are used to build houses, to make baskets, to prepare food, to dye fabric. 128:23 Speaker A Some plants are used in ways that are tied to particular cultural practices and are not freely shared with outsiders. 128:29 Speaker A The knowledge is not a simple list of uses. It is embedded in a broader understanding of how the forest works, which plants grow near which other plants, which conditions they need, how they change across elevation and season, which animals interact with them and 128:45 Speaker A how. Some of this knowledge has been documented by ethnobotanists working in the region, and some of those documents have fed into broader scientific understanding of the Chocó's plant diversity. 128:57 Speaker A But much of it has not been recorded in any form that would survive outside the communities themselves. 129:03 Speaker A It exists in the memory of particular people, in the practices of daily life, in the language used to describe the forest. And that language matters more than it might initially seem. 129:15 Speaker A The Embera and Wounaan languages carry information about the natural world that is not easily translated into Spanish, let alone into the taxonomic vocabulary of academic botany. 129:27 Speaker A A plant name in Embera may encode information about the plant's habitat, its uses, its relationships with other species, or its behavior across seasons. 129:37 Speaker A Information that a Latin binomial does not capture. When linguists and ethnobotanists work together to document indigenous plant knowledge, they sometimes find that a single indigenous term corresponds to what Western taxonomy treats as multiple distinct species, or that a single taxonomic species is 129:57 Speaker A divided by indigenous knowledge into several functionally distinct types based on characteristics that Western taxonomy does not emphasize. 130:06 Speaker A Neither system is simply wrong. They are measuring different things, and they are often more useful in combination than either is alone. 130:15 Speaker A There is a broader concept that applies here, one that researchers in the fields of ethnobiology and conservation biology have been developing over the last few decades. 130:24 Speaker A biocultural diversity The idea is that biological diversity and cultural diversity are not independent phenomena. 130:34 Speaker A They tend to occur together and for reasons that are not accidental. The places on Earth with the highest concentrations of endemic species, the places where evolution has had time to produce the most distinctive life forms, are often also the places with 130:49 Speaker A the highest concentrations of distinct languages and cultures. The Chocó is one of the clearest examples of this pattern. 130:57 Speaker A The region's extraordinary biological richness and the long-standing presence of distinct indigenous communities are not coincidences that happen to overlap on a map. 131:08 Speaker A They are connected. The communities developed in relationship with the biological environment and in some cases they shaped it through selective use of certain plants, through management of forest patches, through practices that maintained particular habitat conditions over long periods. What this means 131:26 Speaker A practically is that the knowledge held by Embera and Wounaan communities is not just culturally valuable in some abstract sense. It is scientifically relevant. 131:36 Speaker A There are animals in the Baudó that indigenous communities have names for, that they can describe in detail, that they know how to find, and that have never been formally described by Western science. 131:48 Speaker A This is not speculation. It is a pattern that has been documented repeatedly across biodiverse regions where indigenous communities have been present for a long time and outside scientific surveys have been limited. 132:02 Speaker A A community member describes an animal. A researcher who hears the description recognizes that it does not match any known species. A subsequent survey guided by community knowledge of where to look finds the animal. It turns out to be new to science. These sequences 132:19 Speaker A happened in the Amazon, in New Guinea, in Central Africa, and in parts of the Chocó. 132:25 Speaker A There is no reason to think the Baudó is an exception. The Baudó River itself is central to the geography of Embera and Wounaan life in this region. 132:34 Speaker A It runs westward from the mountains to the Pacific coast, and the communities along it are connected to one another and to the broader world primarily through river travel. 132:45 Speaker A The river is not just a transport route. It is a source of fish, a place for bathing and washing, a marker of territory, a presence in daily life that shapes everything from the timing of activities to the layout of settlements. 133:00 Speaker A The health of the river, its water quality, its fish populations, its seasonal patterns, is directly connected to the health of the communities along it. This creates a practical alignment between community interests and ecological health that, in the Baudó, 133:16 Speaker A has historically meant that the mountains above the river have been treated with a degree of care. 133:22 Speaker A Not because of any formal conservation program, but because the forest above is understood to be connected to the water below. 133:30 Speaker A This alignment is not absolute, and it would be a mistake to romanticize it. Communities in the Baudó, like communities everywhere, face economic pressures that sometimes push against long-term ecological thinking. 133:45 Speaker A Access to cash income in a region with almost no formal economy can create incentives for practices that damage the forest. Selling timber, allowing mining operations, clearing land for agriculture. 133:59 Speaker A These are not choices made from ignorance or indifference. They are responses to real material needs in a context where the state provides very little in the way of services, infrastructure, or economic alternatives. Understanding the pressures these communities face is 134:16 Speaker A essential to understanding the conservation situation in the Baudó. And it's a part of the story that tends to get lost when the focus stays entirely on the biology. 134:26 Speaker A The legal framework around indigenous territories in Colombia is, on paper, relatively strong. The Colombian Constitution of 1991 recognized indigenous territorial rights more explicitly than most Latin American constitutions of its era. And the resguardo system, legally demarcated indigenous territories with collective 134:48 Speaker A land rights, provides a formal mechanism for protecting both communities and the land they inhabit. 134:54 Speaker A The Baudó region includes several resguardos. And within these territories, indigenous communities have significant authority over land use decisions. 135:04 Speaker A In practice, this authority is not always respected. Illegal mining operations, in particular, have moved into resguardo territories in the Chocó with relative impunity because the state apparatus that would be needed to enforce territorial boundaries is simply not present in any consistent way. 135:24 Speaker A The Colombian government's reach into the interior of Chocó Department is limited and has been for a long time. 135:30 Speaker A What the resguardo system has done, even imperfectly, is create a de facto conservation mechanism that has, in some areas, been more effective than formal protected areas. Satellite imagery comparing forest cover inside resguardo boundaries to forest cover in adjacent 135:47 Speaker A non-indigenous lands often shows a clear difference. The indigenous territories retain more forest. This is not universal, and it is not guaranteed to continue, but it reflects the reality that communities with a direct stake in the land and legal 136:04 Speaker A authority over it often make different decisions than communities without those things. For the Baudó's endemic species, the presence of intact indigenous territories in and around the range is not a peripheral fact. 136:17 Speaker A It is one of the main reasons those species still have habitat. The knowledge held by Embera and Wounaan communities is, in this sense, not separate from the conservation story of the Baudó. 136:28 Speaker A It is part of it. The two things are linked in ways that go beyond the obvious. 136:34 Speaker A Communities that know the forest in detail are communities that notice when it changes. They notice when a fish species becomes less common in the river. 136:44 Speaker A They notice when a plant that used to grow along a particular hillside is no longer there. 136:49 Speaker A They notice when the timing of animal behavior shifts. This kind of long-term fine-grained ecological observation is something that formal science struggles to replicate. 137:00 Speaker A Partly because scientific surveys are episodic rather than continuous. And partly because the scale of attention required, watching a specific stretch of forest over decades, is not how research funding tends to work. 137:15 Speaker A There are researchers who have recognized this and have tried to build genuine partnerships with Embera and Wounaan communities in the Chocó. Not just using community members as guides, but working collaboratively to document knowledge, share findings, and design surveys that reflect community 137:32 Speaker A priorities alongside scientific ones. This kind of work is slow and requires a level of trust that takes time to build, particularly in a region where outside institutions have not always treated indigenous communities well. 137:49 Speaker A But where it has happened, it has produced results that neither side could have achieved alone. 137:54 Speaker A A researcher who knows where to look because a community member has described the habitat of an unknown frog is going to find that frog faster than one working from habitat models alone. 138:06 Speaker A A community that has scientific confirmation of a species presence in their territory is better positioned to make the case for protecting that territory than one relying on traditional knowledge alone in a legal and political system that still tends to 138:20 Speaker A weight scientific documentation heavily. There is something that sits quietly underneath all of this and it is worth naming directly. 138:29 Speaker A The Embera Wounaan communities of the Baudó region are not just repositories of ecological knowledge. 138:36 Speaker A They are communities with their own lives, their own futures, their own aspirations and difficulties. 138:42 Speaker A The young people in these communities are navigating the same tensions that young people in rural communities around the world navigate between the world they grew up in and the wider world that is increasingly present through phones, through migration, through economic pressure. 138:58 Speaker A The transmission of detailed ecological knowledge generation is not automatic. It requires conditions that support it. 139:07 Speaker A Time, stability, a reason to stay, a sense that the knowledge is valued and will remain useful. 139:15 Speaker A When communities are displaced by mining or violence, when young people leave for cities because there is no economic future in the forest, when the forest itself degrades to the point where the knowledge no longer has an object, the knowledge does not 139:30 Speaker A survive in any form. It becomes history rather than practice. This is the tension that runs through the human story of the Baudó and it connects directly to the biological story. The species that live in these mountains evolved over millions of years 139:47 Speaker A in conditions of isolation and stability. The knowledge of those species that exist in human communities developed over centuries of careful attention. 139:57 Speaker A Both are forms of accumulated information that took a very long time to produce and can be lost very quickly. 140:04 Speaker A The rate at which either can be recovered once lost is not comparable to the rate at which it was created. 140:11 Speaker A This asymmetry between how long it takes to build something irreplaceable and how quickly it can be gone is one of the quieter themes running through the entire story of the Baudó. 140:23 Speaker A And the pressure is real, and it is not abstract, and it is not coming from far away. 140:29 Speaker A It is arriving along the rivers, through the forest, in the form of machinery and economic incentives that are difficult to resist when the alternatives are limited. What that pressure looks like on the ground, and what it is doing to 140:42 Speaker A the mountains and the species that have lived in them since long before any human community arrived, that is where the story goes next. 140:51 Speaker A The pressure arrives quietly at first. That is almost always how it works in places like this. 140:57 Speaker A Not a sudden transformation, but a gradual accumulation of small changes. A logging road that didn't exist 2 years ago, a stretch of riverbank that has been churned by machinery, a hillside that looks different from the air than it did in the last satellite pass. 141:14 Speaker A The Baudó has been shaped by its remoteness for millions of years, and that remoteness has not disappeared overnight. 141:22 Speaker A But it is thinner than it used to be, and the things pressing against it are not small. The Chocó department as a whole has one of the highest deforestation rates in Colombia, which is a difficult sentence to sit 141:33 Speaker A with when you consider how much forest the region still holds, and how much depends on it remaining intact. 141:40 Speaker A Colombia lost over 170,000 hectares of forest in 2022 alone, and Chocó was consistently among the most affected departments in that count. 141:51 Speaker A The numbers shift slightly year to year depending on monitoring methodology and reporting, but the direction has not changed. 141:58 Speaker A Forest is being removed faster than it is growing back. And in a region where the soil beneath the forest is not particularly suited to agriculture, it is thin, heavily leached by rainfall and dependent on the forest itself to 142:13 Speaker A remain functional. What replaces the trees is often not farmland that sustains communities over time. 142:20 Speaker A It is degraded land, scrub, and in some cases bare earth that erodes quickly in the heavy rainfall. Logging for tropical hardwoods has been part of the Chocó's economic story for decades. 142:33 Speaker A Species like chachajo, abarco, and various palms have been extracted from the lowland forests, sometimes legally under concessions, often not. 142:44 Speaker A The lowland forests around the base of the Baudó have absorbed much of this pressure, which has, in a practical sense, acted as a kind of buffer. 142:52 Speaker A The higher elevations of the range have been harder to reach, and the timber there is less accessible and less commercially targeted. 143:00 Speaker A But logging roads do not stay where they are. They extend. Each road built to extract timber from one area makes the next area slightly more reachable. 143:11 Speaker A The interior of the Baudó has been protected partly by the absence of roads, and that absence is not permanent. It is a function of economics and logistics that can change as equipment improves and as lowland timber becomes scarcer and more valuable. 143:27 Speaker A The more acute and immediate threat along the rivers is illegal gold mining. The Chocó sits on significant alluvial gold deposits, and artisanal gold mining has been part of the region's economy for a long time. 143:40 Speaker A Practiced by Afro-Colombian and indigenous communities using low-impact methods for generations. What has changed in recent decades is the scale and the technology. 143:50 Speaker A Mechanized mining using heavy dredges and backhoes has moved into river systems across the Chocó, including tributaries of the Baudó River. 143:59 Speaker A These operations do not just extract gold. They physically restructure the riverbed, removing the substrate that aquatic species depend on, eliminating riparian vegetation, and releasing mercury into the water column. 144:14 Speaker A Mercury is used in artisanal and small-scale gold mining to bind gold particles together for extraction, and it does not stay where it is put. 144:23 Speaker A It methylates in aquatic environments, moves through food chains, and accumulates in fish tissue. Communities that depend on river fish as a primary protein source are exposed to it. The frogs and other amphibians that live in and around affected waterways 144:39 Speaker A are exposed to it. The downstream effects of mercury contamination in a river system, as biologically rich as those draining the Baudó, are not fully understood, partly because the baseline data on what lives in those rivers before contamination is 144:54 Speaker A itself incomplete. There have been efforts by Colombian authorities to crack down on illegal mechanized mining in the Chocó. 145:02 Speaker A Some dredges have been seized and destroyed, but enforcement in a region with minimal road infrastructure, difficult terrain, and limited institutional presence is genuinely hard to sustain. 145:15 Speaker A Operations shut down in one area often resume nearby. The economic incentive is significant, and the penalties have not been consistently applied in a way that changes the calculus for the people organizing these operations. This is not a simple story of villains and victims. 145:32 Speaker A Many of the individuals involved in small-scale mining are doing so because it is one of the few available sources of cash income in a region that has has underserved by the formal economy for a very long time. 145:44 Speaker A The structural conditions that make illegal mining attractive are not going to be resolved by enforcement alone. 145:51 Speaker A For the species of the Baudó, riparian habitat degradation is not a peripheral concern. Many of the range's endemic amphibians depend on clean, fast-moving streams for reproduction. 146:05 Speaker A The rain frogs of the genus Pristimantis are direct developers. They do not have a free-swimming tadpole stage, which means they are somewhat less dependent on water quality than species that breed in open water. 146:18 Speaker A But other amphibians in the region do use streams for breeding, and the broader disruption of riparian zones affects the microhabitat structure that all of these species rely on. 146:29 Speaker A Humidity gradients, leaf litter depth, the presence of moss and decomposing wood. These are not incidental features of the environment. They are the environment from the perspective of a small frog or salamander, whose entire life takes place within a few square meters of 146:46 Speaker A forest floor. The Baudó Guan deserves a specific mention here because its situation illustrates how multiple pressures combine in ways that are harder to address than any single threat. 146:59 Speaker A This large, turkey-like bird, found only in the Baudó and its adjacent lowlands, is classified as critically endangered. 147:08 Speaker A Its population has declined significantly, and hunting is a major factor. The Baudó Guan is a large bird, which makes it a meaningful food source in communities with limited protein access, and it is not particularly shy, which makes it relatively easy to hunt. 147:25 Speaker A Conservation messaging around not hunting threatened species runs directly into the reality that people in remote areas without reliable access to markets or alternative protein sources are going to make decisions based on immediate need. 147:40 Speaker A The Baudó Guan also requires intact forest. It does not adapt to degraded or fragmented habitat. 147:47 Speaker A So, it is facing both direct hunting pressure and habitat loss simultaneously in a range where its total population is already small and concentrated. 147:57 Speaker A Climate change adds a layer to all of this that is harder to see, but not less real. 148:02 Speaker A The cloud forest zone that makes the upper Baudó so distinctive, the persistent mist, the dripping moss, the reduced temperatures, is not a fixed feature of the landscape. It exists because of the intersection of elevation, prevailing moisture-laden winds off the Pacific, and temperature 148:19 Speaker A gradients that cause condensation at specific altitude bands. As temperatures rise, the condensation zone shifts upward. The cloud forest moves higher. 148:29 Speaker A For species that live in that zone and are adapted to its specific conditions, the particular humidity, the particular temperature range, the particular plant community it supports, there is nowhere to go when the habitat moves up. 148:43 Speaker A The Baudó's highest point is only about 1,810 m. There is not a great deal of upward space available. 148:51 Speaker A Species adapted to the cloud forest that find their habitat shifting toward the summit of Alto del Buey will eventually run out of mountain. 148:58 Speaker A This is not a hypothetical future scenario. It is a process that is already underway in highland tropical systems around the world, and there is no reason to think the Baudó is exempt from it. 149:10 Speaker A The formal protection of the Baudó is, to put it plainly, insufficient relative to its biological value. 149:17 Speaker A Parts of the range's western slope and adjacent coastal zone fall within the Utría National Natural Park, which covers a stretch of the Pacific coast and includes some terrestrial and marine habitat of significant conservation value. 149:32 Speaker A Utría is a real protected area with real management, and it protects some of what makes the coastal edge of the Baudó significant. 149:39 Speaker A But, the interior of the mountain range, the cloud forest zone, the upper watersheds, the highland habitats where endemic species are concentrated, sits largely outside the boundaries of any formally protected area. 149:53 Speaker A It exists in a kind of de facto protection by inaccessibility, which is a fragile arrangement. 150:01 Speaker A Inaccessibility is not a policy. It is a temporary condition. There have been discussions within Colombian conservation circles about expanding protected area coverage in the Baudó region. And there are ongoing efforts by organizations including www.f colombia and fundacion natura to work on 150:21 Speaker A landscape level conservation planning in the Chocó. The legal mechanisms exist in Colombia to create new protected areas, and the country has made significant commitments in recent years to expanding its protected area network as part of international biodiversity agreements. 150:39 Speaker A Whether those commitments translate into specific action in the Baudó interior depends on political will, funding, and the ability to navigate the complex land tenure situation in a region where indigenous resguardos, Afro-Colombian collective territories, and areas of unclear or contested ownership all 150:59 Speaker A overlap. What is clear from a purely biological standpoint is that the Baudó's endemic species have no fallback. A species found only in the cloud forest of a single mountain range cannot retreat to a nearby population when its habitat is 151:16 Speaker A degraded. There is no nearby population. The Baudó Guan does not also live in the Andes. 151:22 Speaker A The endemic rain frogs of the upper Baudó do not have a sister population in Venezuela or Ecuador that could serve as a source for recolonization. 151:32 Speaker A The isolation that produced these species, the same isolation that makes them scientifically extraordinary, means that local extinction is global extinction. 151:41 Speaker A There is no distinction between the two for a species whose entire range is a single mountain system. 151:47 Speaker A This is the asymmetry that conservation biologists keep returning to when they talk about places like the Baudó. 151:55 Speaker A The time required to produce an endemic species through isolation and natural selection is measured in hundreds of thousands to millions of years. The time required to eliminate that species through habitat loss or hunting or contamination is measured in decades, 152:11 Speaker A sometimes less. The math does not balance. And the uncomfortable reality is that some of what the Baudó contains has almost certainly already been lost before it was ever described. 152:23 Speaker A Species that existed in small populations in specific microhabitats that were never collected by a researcher, that were never named, that disappeared as their habitat was altered. There is no record of them because there was never an opportunity to create one. 152:39 Speaker A The gaps in the species inventory of the Baudó are not just gaps in knowledge. 152:43 Speaker A Some of them are absences. That said, there is still a great deal present. The surveys that have been done, limited as they are, have consistently found things. New species are still being described from specimens collected in the Baudó region. 152:58 Speaker A Researchers who manage to get into the interior still come back with records that extend known ranges, fill in distribution gaps, and occasionally turn up something that was not expected at all. 153:10 Speaker A The biological richness that has accumulated in these mountains over geological time has not been exhausted even by the pressures of the last several decades. 153:20 Speaker A The cloud forest is still there. The rivers still run. The frogs still call at night. 153:26 Speaker A But the margin is narrowing and the pace of documentation has not kept up with the pace of change. 153:33 Speaker A The question of what can realistically be done, what combination of protection, research, community partnership, and policy change might actually stabilize the situation is not one with a clean answer. 153:47 Speaker A But it is the question that follows naturally from everything the Baudó's biology makes clear. And it is the question that the people who know this range best, both the scientists who have worked there and the communities who have lived there, are trying to answer 154:02 Speaker A under conditions that are not easy. What that work looks like in practice, the tools being used, and the findings coming in from the field is a different part of the story, one that has been quietly unfolding in recent years, piece by careful piece. 154:20 Speaker A So, what does the work actually look like when someone decides to go there? It does not look like a research station with electricity and a satellite uplink. 154:29 Speaker A It does not look like a team of scientists stepping off a small plane onto a landing strip and driving to a field site in a four-wheel drive vehicle. 154:37 Speaker A The Baudó does not offer those arrangements. Getting into the interior of this range means starting from one of the small riverside communities along the Baudó River, places like Piede Pató or Baudó itself, and from there, traveling by motorized canoe up the tributaries that 154:53 Speaker A drain the western slopes of the mountains. The canoes are narrow, low in the water, loud with the sound of a small outboard motor bouncing off the river banks. 155:02 Speaker A The river gets shallower as you move upstream, and there are stretches where the canoe has to be dragged over gravel bars by hand. 155:10 Speaker A After the river runs out of navigable water, you walk. The trails, where they exist, are maintained by the communities that use them, not by any park authority or research institution. 155:22 Speaker A Where they do not exist, you move through forest. And the forest in the Baudó is not the kind that opens up and lets you pass easily. 155:30 Speaker A It is dense and wet and layered, and the undergrowth closes in quickly. A day of hiking in this terrain might cover 5 or 6 km, maybe less, depending on the slope and the conditions. 155:43 Speaker A Researchers who have worked in the Baudó and adjacent areas describe the logistics with a kind of matter-of-fact exhaustion. 155:50 Speaker A Everything you need for a multi-week expedition goes in with you. Equipment, food, sampling supplies, preservation chemicals for specimens, recording devices, batteries, all of it carried in by hand or by mule on the sections of trail that allow it. 156:08 Speaker A Communication with the outside world is intermittent at best. If something goes wrong medically or logistically, evacuation is a serious problem. 156:17 Speaker A These are not conditions that attract large research teams or frequent return visits. They're conditions that require a specific kind of commitment, and they explain, in large part, why the biological inventory of the Baudó interior remains so incomplete, despite the fact that the region's 156:35 Speaker A extraordinary richness has been recognized for decades. What has made a real difference in recent years, though, is the development of methods that can gather information without requiring a researcher to be physically present at every moment and every location. 156:52 Speaker A Environmental DNA sampling, eDNA, is one of these. The basic idea is that organisms shed genetic material into their environment continuously. 157:03 Speaker A Skin cells, mucus, feces, shed scales, fragments of tissue. In an aquatic environment like a river or a stream pool, this material accumulates in the water column and can be collected in a simple water sample. 157:18 Speaker A That sample, filtered and preserved in the field, can then be sent to a laboratory where the genetic material is extracted and sequenced and the sequences can be matched against reference databases to identify which species were present in that water at 157:33 Speaker A the time of collection. For a region like the Baudó, where getting a researcher to every stream and pool is practically impossible, eDNA offers a way to extend the reach of a survey far beyond what traditional methods allow. 157:47 Speaker A A trained field assistant, someone from a local community for example, who knows the terrain and can move through it efficiently, can collect dozens of water samples in the time it would take a research team to survey a single site by 158:01 Speaker A traditional methods. Acoustic monitoring works on a similar principle. Automated recording units can be deployed in the forest and left running for days or weeks, capturing the soundscape continuously. 158:16 Speaker A The recordings are then analyzed either manually by trained listeners or increasingly by machine learning algorithms trained to recognize species-specific calls. For birds, this is a well-developed method. The calls of most known Neotropical bird species are documented in reference libraries like 158:33 Speaker A Xeno-canto, which contains hundreds of thousands of recordings from across the Americas. For bats, acoustic identification is more technically demanding but also well-established. 158:45 Speaker A A single recording unit left running overnight in the Baudó cloud forest will capture the calls of every bat species that flew within range of its microphone during those hours. 158:55 Speaker A Processed against a reference library, those recordings can produce a species list for that site that would have taken weeks of traditional mist netting to assemble. 159:05 Speaker A And mist netting, which involves stretching fine mesh nets across forest paths and checking them repeatedly through the night, requires a team of people present and awake at 2:00 in the morning in the rain. The recording unit does not. Camera traps have been used in 159:20 Speaker A the Chocó for mammal surveys, though deployment in the Baudó interior specifically has been limited. 159:26 Speaker A The cameras are triggered by motion and heat and record short video clips or still images of whatever passes in front of them. 159:34 Speaker A For documenting large and medium-sized mammals jaguars tapirs peccaries ocelots, tayras, and the various smaller carnivores that move through the forest at night, camera traps are now the standard method and they have produced significant results in the broader Chocó region. 159:52 Speaker A One of the more interesting developments in recent years has been the training of community members in camera trap deployment and data collection. 160:00 Speaker A Researchers from Colombian institutions have worked with Embera and Wounaan communities to set up monitoring programs where local people manage the cameras, download the images, and transmit the data to research teams. 160:13 Speaker A This approach solves several problems at once. It does not require a researcher to make an expedition every time a camera needs its batteries changed. It builds local capacity and engagement with the monitoring process, and it keeps the cameras running consistently 160:28 Speaker A over longer periods than a short-term research visit would allow. The data coming out of these community-managed programs is not always as systematically collected as a researcher-managed survey would be, but it is continuous in a way that episodic expeditions cannot be. And 160:45 Speaker A continuity turns out to matter enormously when you're trying to understand how animal populations change over time. 160:53 Speaker A The Instituto de Investigación de Recursos Biológicos Alexander von Humboldt, usually just called the Humboldt Institute, is the Colombian institution most centrally involved in coordinating biodiversity research across the country. 161:09 Speaker A And it has been active in the Chocó region for a number of years. The institute maintains a national biodiversity database, coordinates rapid assessment expeditions, and works to connect academic research with policy processes. 161:24 Speaker A Its presence in the Chocó, and by extension in the Baudó region, represents an important piece of the institutional infrastructure that makes sustained research possible. 161:35 Speaker A Without some form of coordination at the national level, the work done in a place like the Baudó tends to remain fragmented, a collection of individual expeditions by different teams producing data that is difficult to integrate and compare. 161:50 Speaker A The Humboldt Institute's role in aggregating and standardizing the data is less visible than the fieldwork itself, but it matters. 161:59 Speaker A On the species side, the findings from recent years have been consistent with what the region's biology would predict. 162:06 Speaker A There is more here than the existing records show, and every time someone looks carefully, something turns up. 162:13 Speaker A Several new species of Pristimantis rain frogs have been described from the Baudó and adjacent Chocó in the 2010s and into the 2020s. 162:21 Speaker A Pristimantis is, by some measures, the most species-rich vertebrate genus on Earth. There are over 500 described species, and new ones are named regularly, particularly from poorly surveyed areas of the Andes and the Pacific lowlands. 162:37 Speaker A The genus is well represented in the Baudó, and the combination of the range's isolation, its elevation gradient, and its perpetual humidity creates conditions that are, from a Pristimantis perspective, essentially ideal. 162:53 Speaker A These are small frogs, typically a few centimeters long, that lay eggs in moist terrestrial sites rather than in water. 163:00 Speaker A A reproductive strategy that makes them completely independent of streams and pools and allows them to colonize a wide range of microhabitats within the forest. 163:11 Speaker A They're also notoriously difficult to tell apart by appearance alone. Many species that look nearly identical to the naked eye turn out when their calls are recorded and their genetics are analyzed to be distinct species that have been diverging for hundreds of 163:26 Speaker A thousands of years. This is part of why new Pristimantis species keep being described from museum specimens that were collected decades ago. 163:36 Speaker A A frog collected in the Baudó in 1965 and identified as a known species might sit in a museum drawer until someone with modern genetic tools looks at it again and realizes it is something else entirely. 163:53 Speaker A A 2019 rapid assessment survey they conducted in the northern Chocó, not in the Baudó itself, but in the adjacent lowland and foothill zone, documented dozens of species that had not previously been recorded from that part of Colombia, along with several that appear to 164:10 Speaker A represent species new to science. The survey was conducted over a period of roughly 3 weeks by a team that included Colombian and international researchers, and it covered vertebrates, plants, and invertebrates across multiple sites. 164:26 Speaker A The results were consistent with what similar rapid assessments have found in other under-surveyed parts of the Chocó. 164:33 Speaker A The region is not just rich in species, it is rich in species that are not yet in the databases. 164:40 Speaker A The gap between what is actually present and what is formally documented remains wide, and it does not appear to be closing quickly. 164:48 Speaker A Part of the reason it is not closing quickly is that the access problem has not been solved. The tools have improved, eDNA, acoustic monitoring, community-based camera trapping, and remote sensing of forest cover from satellite imagery have all extended what 165:06 Speaker A is possible without physically being in the forest. But for many groups of organisms, particularly plants, fungi, invertebrates, and the smaller vertebrates that require careful morphological examination to identify, there is still no substitute for a researcher with a hand lens and a 165:22 Speaker A specimen jar, moving slowly through the forest and looking at things. And getting that researcher into the Bowdo interior remains a multi-day logistical exercise that most research programs, with their limited field budgets and tight timelines, struggle to accommodate. 165:40 Speaker A The brief expedition model, going for 2 weeks, collect what you can, come out, tends to produce snapshots rather than understanding. 165:48 Speaker A It tells you something is there. It does not tell you how many, how stable the population is, how it is connected to other populations, or what it needs to persist. 165:58 Speaker A For conservation purposes, the snapshot is better than nothing, but it is not enough. There is also the question of what happens to the specimens and data after they are collected. Taxonomic work, the careful process of comparing specimens, analyzing genetics, reviewing the 166:15 Speaker A literature, and formally describing a new species, takes time. A frog collected in the Bowdo this year might not be formally described as a new species for 5 or 10 years, depending on the workload of the taxonomist involved and the availability of comparative 166:32 Speaker A material. In the meantime, it exists in a museum collection somewhere, waiting. This is not a criticism of the researchers involved. Taxonomy is genuinely slow, careful work, and doing it properly requires resources and expertise that are not always available 166:51 Speaker A in abundance. But it does mean that the known species list for the Baudó is always a significant undercount of what is actually there. 166:59 Speaker A Even setting aside the species that have never been collected tall. What the combination of improved methods and renewed access since the 2016 peace agreement has produced then is not a sudden comprehensive understanding of the Baudó's biology. 167:14 Speaker A It's a gradually thickening picture with new details being filled in from multiple directions at once. 167:21 Speaker A New species descriptions from museum collections. New records from community-based monitoring. New distribution data from eDNA surveys. New acoustic detections of birds and bats that extended known ranges further into the mountains than previously documented. The picture is becoming clearer slowly. 167:43 Speaker A But the pace of that clarification is still slower than the pace of change in the landscape around it. 167:49 Speaker A The tools are there. The knowledge of what needs to be done is there. The biological case for treating the Baudó as a priority is frankly overwhelming. What remains is the harder work of translating that case into something durable. Into protection that 168:05 Speaker A lasts. Into research programs that return year after year. Into partnerships with the communities who live in and around these mountains and who have the most direct stake in what happens to them. 168:17 Speaker A That larger question of what the Baudó means not just as a biological object, but as a place that exists within a particular political and conservation reality opens onto a different kind of thinking. 168:30 Speaker A The kind that asks not only what is here, but what it might mean in a broader sense that places like this exist at all. 168:38 Speaker A There is a concept in biology called a refugium. The word comes from Latin and it means roughly what it sounds like, a refuge, a place of shelter. 168:49 Speaker A In the technical sense, a refugium is a geographic area where a population of organisms survived during a period when conditions elsewhere became hostile. 168:58 Speaker A The most commonly discussed refugia in South America are the forest patches that persisted through the drier, cooler periods of the Pleistocene epoch. 169:08 Speaker A The long stretch of glacial cycling that lasted from roughly 2.6 million years ago until about 11,700 years ago. 169:18 Speaker A During the coldest and driest phases of those glacial periods, large portions of what is now continuous Amazonian and Pacific rainforest contracted. 169:28 Speaker A The climate shifted, rainfall declined in many areas. Forest gave way to drier woodland or savanna in places that are today covered in dense canopy. 169:39 Speaker A But some areas stayed wet. Some corners of the landscape, protected by local topography or ocean proximity or persistent cloud cover, held onto their humidity while the surrounding forest retreated. 169:53 Speaker A These were the refugia. And what happened inside them over tens of thousands of years was extraordinary. 170:01 Speaker A The Baudó is almost certainly one of those places. Its position along Colombia's Pacific coast, close to the ocean, fed by moisture-laden winds coming off the water, means that even during periods of regional drying, it likely maintained the kind of persistent rainfall that 170:18 Speaker A forest requires. The Atrato basin to the east may have contracted. The lowland forest around the range's base may have thinned. 170:27 Speaker A But the Baudó Mountains, sitting in the path of Pacific weather systems, probably stayed wet. 170:33 Speaker A Species that elsewhere were losing habitat could persist here. And when the climate shifted again, when the interglacial periods brought warmth and moisture back to the surrounding landscape, the Baudó's populations had already been sitting in relative isolation for thousands of years, 170:50 Speaker A diverging quietly from their relatives elsewhere. The refugium did not just preserve life, it accelerated its diversification. 171:00 Speaker A This is one of the more elegant ideas in biogeography, and the Baudó fits it well. 171:06 Speaker A But it is worth sitting with the specific implications for a moment, because they are somewhat counterintuitive. 171:13 Speaker A We tend to think of isolation as a kind of poverty, a place cut off from the flow of things, limited by what it already has. 171:22 Speaker A And in some ways, that is true. An isolated population cannot receive new genetic material from outside, cannot be replenished if it declines, cannot easily spread when conditions improve. Isolation is genuinely risky, but it is also generative. 171:41 Speaker A Given enough time, an isolated population will accumulate genetic differences from its parent population. Given the right pressures, new predators, new competitors, new food sources, new microhabitats within the isolated range, those genetic differences will be shaped by natural selection into something distinct. A 172:03 Speaker A subspecies becomes a species. A species becomes something that, if you look at it carefully enough, you realize has no close relative anywhere else on Earth. 172:14 Speaker A That process, playing out over millions of years across the Baudó's cloud forests and river valleys and mossy ridgelines, is what produced the Baudó Guan and the Baudó Oropendola, the undescribed Pristimantis frogs in the museum drawers, the orchid species that grow on 172:31 Speaker A particular mossy branches at particular elevations and nowhere else. It is not magic. It is just time and isolation and the slow accumulation of small differences until the differences become irreversible. 172:47 Speaker A The Baudo had both in abundance. What makes the Baudo particularly interesting to scientists thinking about these questions is its relatively modest size and elevation. 173:00 Speaker A Most of the world's famous evolutionary islands, the places that have generated extraordinary endemism through isolation, are either genuinely large or genuinely high or both. The tepuis of Venezuela rise to over 2,800 m in some cases with the famous Mount Roraima 173:20 Speaker A reaching nearly 2,810 m. And their flat summits have been isolated from the surrounding landscape for so long that they have developed entirely distinct communities of plants and animals. 173:33 Speaker A The Albertine Rift Mountains of East Africa, the chain running through Uganda, Rwanda, Burundi, the Democratic Republic of Congo and Tanzania, reach elevations above 5,000 m and span hundreds of kilometers, creating an enormous highland corridor that has produced spectacular endemism in birds, 173:53 Speaker A primates, and plants. The sky islands of the American Southwest, the isolated mountain ranges rising from the Sonoran and Chihuahuan deserts of Arizona, New Mexico, and northern Mexico, are separated from each other by desert lowlands and have developed distinct communities of plants 174:12 Speaker A and animals on each range with some species found on only a single mountain. The Baudo does not compete with any of these on raw scale. Its highest point, Alto del Buey, reaches about 1,810 m, high enough for cloud forest, but not 174:28 Speaker A dramatically so. The range is roughly 300 km long, but relatively narrow. Its total area of highland habitat, the zone above the lowland forest where conditions are distinct enough to act as a genuine barrier to lowland species, is not enormous. 174:45 Speaker A And yet its level of endemism is comparable to ranges many times its size. That is the part that makes biologists pay attention. 174:54 Speaker A One explanation is the surrounding context. The Baudó does not sit in an ordinary landscape. It sits inside the Chocó bioregion, which is itself one of the most species-rich areas on Earth. 175:07 Speaker A The baseline level of biological diversity in the surrounding lowlands is already extraordinarily high, which means the pool of species from which the Baudó's highland communities were drawn was large to begin with. 175:20 Speaker A More raw material for evolution to work with, more lineages available to colonize the highlands, become isolated and diverge. 175:28 Speaker A The Baudó's endemism is partly a product of the Chocó's richness, amplified by the mountain's isolation. 175:35 Speaker A Another explanation is the rainfall. The Chocó is one of the wettest places on the planet, and the Baudó sits at the heart of it. 175:43 Speaker A Some areas of the surrounding lowlands receive more than 9,000 mm of rain per year. 175:49 Speaker A This persistent year-round moisture means that even small differences in elevation produce large differences in habitat. 175:56 Speaker A A few hundred meters of altitude gain changes the temperature, the cloud cover, the composition of the soil, the identity of the plants that can grow there, and therefore the animals that depend on those plants. 176:08 Speaker A The ecological gradient from lowland rainforest to cloud forest is compressed into a relatively short vertical distance, but it is steep and real. 176:17 Speaker A This creates multiple distinct microhabitats stacked on top of each other, each one potentially acting as a separate evolutionary arena. 176:25 Speaker A The Baudó is not one island. In a sense, it is several layered by elevation. 176:31 Speaker A And then there is the age of the isolation. The Baudó is not part of the Andes. It is a separate range of oceanic origin, formed from uplifted oceanic crust, and its separation from the Andean system is not a recent geological accident. 176:48 Speaker A The Atrato Valley that divides the Baudó from the Western Andes to the east has been a persistent lowland barrier for a very long time. Long enough that the biological communities on either side of it have diverged substantially. 177:02 Speaker A The Baudó's isolation is not measured in thousands of years. It is measured in millions. That is a different order of magnitude from the Pleistocene refugium story, which operates on time scales of tens of thousands of years. The deep 177:17 Speaker A geological separation is the foundation. The Pleistocene dynamics are layered on top of it, adding additional rounds of isolation and divergence to a process that was already ancient. 177:29 Speaker A When you put all of this together, the oceanic origin and ancient geological isolation, the Pleistocene refugium dynamics, the extraordinary rainfall and compressed ecological gradient, the high baseline diversity of the surrounding Chocó, the Baudó's endemism stops being surprising. It becomes almost 177:50 Speaker A predictable. Of course, this place has species found nowhere else. The conditions for producing them were present and have been present for a very long time. 177:59 Speaker A What the Baudó demonstrates then is something useful for thinking about isolated ranges elsewhere. That you do not need to be the Himalayas to function as an evolutionary island. 178:10 Speaker A You do not need dramatic height or continental scale. What you need is persistent separation from the surrounding landscape, stable enough conditions to allow populations to persist through climatic shifts, and enough ecological complexity to provide the raw material for diversification. 178:29 Speaker A The Baudó has all three. Its modest elevation is almost beside the point. The relevant metric is not how high it reaches, but how effectively it has been cut off and for how long. 178:41 Speaker A This has practical implications for how we think about other small isolated ranges around the world that have not yet received serious scientific attention. 178:51 Speaker A There are mountain ranges in the tropics, in Central Africa, in Southeast Asia, in parts of Central America, that share some of the Baudó's characteristics. 179:00 Speaker A Coastal or near-coastal position, high rainfall, separation from larger mountain systems, minimal survey effort. The assumption has sometimes been that these smaller ranges are biologically less interesting than the great highland systems. The Baudó suggests that assumption deserves to be reconsidered. 179:20 Speaker A Size is not destiny. Isolation and time are what matter, and those are not always correlated with elevation. 179:28 Speaker A There is also something worth noting about what the Baudó tells us regarding the resilience of life under pressure. 179:34 Speaker A The species that survived in the Baudó refugium during the Pleistocene dry periods were not doing so in ideal conditions. 179:42 Speaker A They were compressed, their habitat reduced, their populations almost certainly smaller and more vulnerable than they are today. 179:50 Speaker A And yet, they persisted. The Baudó guan's ancestor survived. The ancestors of those undescribed Pristimantis frogs survived. 180:00 Speaker A The orchids and bromeliads and palms that exist nowhere else survived. They did so because the refugium held, because the rain kept coming, because the cloud forest kept its grip on the ridge because the conditions stayed just barely good enough for long enough. 180:17 Speaker A That is a narrow margin. It is a reminder that the species we are talking about are not indestructible. 180:23 Speaker A They survived the Pleistocene because the baudo happened to stay wet. They will not necessarily survive what is happening now, which operates on a different logic entirely. 180:33 Speaker A Not a slow climatic shift over millennia, but a rapid human-driven transformation of the landscape that is measured in years. 180:42 Speaker A The Pleistocene refugium story is, in one reading, a story of hope. Proof that life can hang on through difficult periods and emerge on the other side. 180:52 Speaker A But it is also a story about thresholds. The species in the baudo survived because conditions stayed above a certain minimum. 181:00 Speaker A Below that minimum, they would not have. The question being asked of the baudo right now by the deforestation and the mining and the climate shifts that are pushing cloud forest zones upward is whether conditions will stay above the threshold again. 181:14 Speaker A The geological past says they have before. The present situation does not offer the same assurance. 181:21 Speaker A There is one more thing the refugium concept adds to how we understand the baudo. 181:26 Speaker A And it is perhaps the most quietly important. A refugium is not just a place where species survive. 181:33 Speaker A It is a place where genetic diversity is concentrated and preserved. When populations are compressed into a refugium during a difficult period, the individuals that survive carry with them the genetic variation of a much larger population. 181:48 Speaker A That variation is the raw material for future adaptation. A species that survives a refugium period with its genetic diversity intact is a species that retains the capacity to respond to future change, to adapt to new conditions, to colonize new habitats 182:06 Speaker A when they become available, To evolve in response to new pressures. A species that survives but is genetically bottlenecked, reduced to a small population with very little variation, has survived but is fragile, less capable of adapting to whatever comes next. The Baudó's endemic species 182:26 Speaker A are in this sense carrying something precious that goes beyond their existence as individual species. 182:33 Speaker A They're carrying the accumulated genetic history of lineages that have been isolated and shaped by this particular landscape for millions of years. 182:42 Speaker A That genetic information is not duplicated anywhere else. It cannot be reconstructed if it is lost. 182:49 Speaker A And it is not just of scientific interest. It is part of the living record of how life on Earth has responded to change over geological time. 182:58 Speaker A Understanding it, which requires the species to exist and the populations to be large enough to study, tells us something about the mechanisms of evolution that we cannot learn any other way. 183:10 Speaker A This is the deeper argument for places like the Baudó, beyond the more immediate case about species counts and endemism percentages. 183:18 Speaker A It is not only that these mountains contain species found nowhere else, though they do. It is that they contain evolutionary histories found nowhere else, lineages shaped by a particular combination of conditions over a particular span of time in a particular 183:34 Speaker A place. Those histories are legible if we have the tools and the access to read them. 183:40 Speaker A They are informative in ways that are still being worked out about the processes that generate biological diversity on Earth, and they are irreplaceable in the most literal sense of the word. 183:52 Speaker A The Baudó is, in this framing, less a collection of species than an archive. A wet, mossy, mist-draped archive sitting on the Pacific coast of Colombia holding records that predate human writing by an almost incomprehensible margin. 184:09 Speaker A What those records say about the minimum conditions needed for evolutionary islands to function, about how small a range can be and still produce extraordinary endemism, about how much rainfall and how much time and how much separation from the surrounding 184:25 Speaker A landscape it takes to turn a mountain into a biological engine is a question that researchers are still in the early stages of answering. And the answers, when they come, will not come only from the Baudó. 184:38 Speaker A They will come from comparing the Baudó to the tepui, to the Albertine Rift, to the sky islands, to the other small coastal ranges in the tropics that have received even less attention. 184:50 Speaker A The Baudó is one data point in a larger comparative project, but it is a particularly rich data point and one that is still being read. Every new species description from a museum specimen, every acoustic detection of a bird at an elevation where it was not 185:05 Speaker A previously recorded, every eDNA result from a stream in the cloud forest zone adds to the picture. 185:12 Speaker A Slowly, the archive is being opened, which brings the question around naturally from the science of what the Baudó is to the politics of what it might become, and whether the conditions that allowed this archive to accumulate over millions of years can be maintained 185:27 Speaker A through the very different pressures of the present century. So, what does it actually look like when the science meets the policy? 185:35 Speaker A When the knowledge that something is irreplaceable runs up against the reality of governing a remote, underfunded, conflict-affected region on the Pacific coast of Colombia? 185:46 Speaker A That is the question the Baudó now sits inside, and it is not a comfortable one. 185:51 Speaker A The answers are partial, contested, and in some cases genuinely hopeful, which makes them worth sitting with for a while. 185:59 Speaker A The most straightforward argument is the one conservationists have been making about places like this for decades. 186:05 Speaker A Expand the protected area coverage. Right now, the Baudó's coastline has some formal protection through Utría National Natural Park, which covers a strip of coast and some adjacent forest in the northern part of the range. 186:21 Speaker A It is a genuinely beautiful park, known for humpback whale aggregations in its bay between July and November. 186:28 Speaker A And it has been important for protecting the coastal transition zone. But the interior of the Baudó range, the cloud forest ridges, the mid-elevation slopes where the endemism is densest, the headwaters of the rivers that drain outward to the Pacific, sits largely 186:45 Speaker A outside any formal protected area. The mountains that contain the Baudó guan, the undescribed Pristimantis frogs, the endemic orchids and bromeliads that have not yet been formally named, are not, in any meaningful legal sense, protected. They are simply remote. 187:02 Speaker A And remoteness, as the logging roads pushing steadily closer have been demonstrating for years, is not a permanent condition. 187:11 Speaker A The case for expanding protection to cover the Baudó interior is, on the scientific evidence, essentially unanswerable. 187:18 Speaker A The endemism rates are high. The species are found nowhere else. The rate of new discoveries every time a researcher manages to get there is, by any reasonable standard, extraordinary. 187:31 Speaker A If you applied the criteria used to designate protected areas anywhere else in the world to the Baudó, it would qualify without difficulty. 187:40 Speaker A The argument is not about whether the place deserves protection. The argument is about how protection actually works in practice in a place like this. 187:48 Speaker A Colombia has a complex system of protected areas, and it has, particularly since the 2016 peace agreement with the FARC, been expanding that system. 187:57 Speaker A New national parks and regional protected areas have been declared in several parts of the country. 188:03 Speaker A The political will, at least at certain levels of the Colombian government, is not entirely absent. 188:10 Speaker A But declaring a protected area and actually managing it are two different things. The Chocó department has historically had very limited state presence. Few roads, minimal infrastructure, underfunded local institutions. 188:27 Speaker A Enforcement of environmental regulations in the region has been weak, not because of indifference, but because the logistical and financial barriers to operating in this terrain are genuinely formidable. 188:39 Speaker A A paper declaration of protection does not stop illegal miners if there is no one to enforce it. 188:45 Speaker A It does not stop logging if the nearest ranger station is a two-day river journey away. 188:51 Speaker A This is where the conversation about indigenous territorial rights becomes not just ethically important, but practically central. 188:58 Speaker A The Embera and Wounaan communities of the Baudó region hold resguardos, legally recognized indigenous territories that cover significant portions of the landscape. 189:09 Speaker A And what the data consistently shows, across Colombia and across the tropics more broadly, is that indigenous territories tend to have better forest cover than adjacent non-indigenous lands, even when neither area has formal protected status. 189:25 Speaker A The reasons are not mysterious. Communities that have lived in a forest for generations and whose livelihoods, cultural practices, and physical survival depend on its health have strong incentives to maintain it. 189:38 Speaker A They also have the local knowledge and the daily presence to actually monitor what is happening. 189:43 Speaker A Something that a distant protected area administration cannot replicate. In the Baudó specifically, Embera communities along the Baudó River and its tributaries have been living in relationship with this forest for centuries. 189:57 Speaker A Their territorial boundaries, their management practices, and their presence on the land have been functioning as a de facto conservation mechanism for the cloud forest zone in ways that have never been formally credited or systematically studied. 190:12 Speaker A Some researchers working in the region have noted that the areas of best preserved mid-elevation forest often correspond closely to the boundaries of indigenous territories. 190:22 Speaker A This is not a coincidence. It reflects the fact that the Embera and Wounaan have been doing, without any international funding or scientific recognition, what conservation organizations spend enormous resources trying to achieve elsewhere. Recognizing this formally, strengthening indigenous territorial rights, ensuring that 190:42 Speaker A communities have legal security over their lands, and supporting community-based monitoring and management is increasingly understood by conservation biologists working in the region as not just an ethical obligation, but the most pragmatically effective conservation strategy available. 190:59 Speaker A Organizations like WWF Colombia and Fundación Natura, which have active programs in the Chocó, have been moving in this direction, working with communities rather than around them, training community members in biological monitoring techniques, and supporting indigenous governance structures as 191:16 Speaker A conservation tools. The results, where these programs have been running long enough to evaluate, have been encouraging. 191:23 Speaker A Camera traps deployed and maintained by community members have generated wildlife data that researchers could not have obtained any other way. 191:32 Speaker A Community-led patrols have been more effective at detecting illegal activity than external enforcement in several cases. 191:39 Speaker A There is also the question of international funding mechanisms, and specifically REDD+. Reducing emissions from deforestation and forest degradation, a framework developed under the United Nations climate agreements that allows forested countries to receive financial payments for keeping forests standing. 191:58 Speaker A The logic is that tropical forests store enormous amounts of carbon, and preventing their destruction is therefore a climate mitigation strategy that benefits the whole world, not just the country where the forest happens to be. 192:11 Speaker A Columbia has been developing REDD+ programs, and the Chocó, with its extraordinary forest carbon stocks and its high deforestation pressure, is a logical priority area. Some of this funding has begun to flow into the region, though the administrative complexity of REDD+ 192:27 Speaker A programs, the need for baseline carbon measurements, monitoring systems, verification protocols, and benefit-sharing arrangements means that getting from international commitment to on-the-ground impact takes time. 192:41 Speaker A The Baudó sits at the intersection of several of these funding streams and policy frameworks, but it has not yet become a focal point for any of them in the way that some higher-profile areas of the Colombian Pacific have. 192:54 Speaker A Part of this is simply visibility. The Baudó is not well known even within Colombian conservation circles, and places that are not well known tend not to attract the attention and resources that better-known places do. 193:07 Speaker A This is one of the more frustrating feedback loops in conservation. The places that most need attention are often the places least likely to receive it, because they are remote, poorly documented, and outside the awareness of the people making funding decisions. 193:23 Speaker A The illegal mining situation adds another layer of difficulty that cannot be resolved through protected area declarations or indigenous territorial recognition alone. 193:33 Speaker A Gold mining along the rivers of the Chocó, using mercury to process ore, which then enters the waterways and accumulates through the food chain, is not a small-scale or easily stopped problem. 193:45 Speaker A It involves organized criminal networks. It generates significant income in a region with very limited legal economic opportunities, and it has been expanding. 193:55 Speaker A Mercury contamination in rivers of the Baudó watershed has been documented, though systematic monitoring is limited. 194:03 Speaker A The effects on aquatic species, fish, amphibians, invertebrates, are severe and poorly understood in this specific context. Amphibians, which are already among the most threatened groups globally, are particularly vulnerable to waterborne contaminants. The same Pristimantis frogs and other amphibians 194:21 Speaker A that make the Baudó scientifically extraordinary are also the species most likely to be affected by mercury moving through the watershed. 194:29 Speaker A Addressing illegal mining requires a combination of enforcement, alternative livelihood development, and engagement with the communities that are often caught between criminal networks and state authorities with very little support from either. 194:44 Speaker A It is slow, complicated, sometimes dangerous work, and it does not lend itself to the kind of straightforward narrative that conservation campaigns find easy to communicate. It is also, realistically, the most immediate threat to the Baudó's waterways and the species 195:01 Speaker A that depend on them, more immediate in some areas than the deforestation. Climate change sits above all of this as a longer-term pressure that interacts with every other threat. 195:12 Speaker A The cloud forest zone that produces the Baudó's most distinctive endemic species exists within a fairly narrow band of elevation and temperature. As temperatures rise, that band shifts upward. Species adapted to cloud forest conditions move with it, if they can. 195:30 Speaker A But the Baudó's highest point is only around 1,810 m. There is not much room to move upward before you run out of mountain. Species that are already restricted to the upper elevations of the range have nowhere to go. 195:44 Speaker A This is sometimes called the escalator to extinction. A slow, invisible process in which species track their preferred climate conditions upward until the mountain runs out beneath them. It has already been documented in other tropical mountain systems. There is no 195:59 Speaker A particular reason to think the Baudó will be exempt. The honest assessment of the Baudó's future is that it is genuinely uncertain. There are real reasons for concern. The deforestation rates, the mining, the climate trajectory, the weakness of formal 196:16 Speaker A protection, the displacement pressure on indigenous communities. There are also real reasons for cautious hope. The peace agreement has allowed researchers and conservation organizations to work in the region in ways that were not possible during the conflict years. 196:32 Speaker A Indigenous territorial rights provide a framework, however imperfect, for community-based conservation. International funding mechanisms, though slow and complicated, are beginning to reach the region. 196:45 Speaker A Colombian scientific institutions, particularly the Alexander von Humboldt Institute, have been expanding their work in the Chocó and the Baudó itself, by virtue of its terrain and its rainfall, retains a degree of natural inaccessibility that has slowed the pace of degradation 197:03 Speaker A in its interior compared to more accessible areas. What the Baudó needs, in practical terms, is not complicated to describe, even if it is complicated to achieve. It needs formal protected area status extended to cover the cloud forest interior of the range. It needs the 197:21 Speaker A legal security of indigenous territorial rights strengthened and enforced. It needs sustained biological survey work to document what is there before it is lost. 197:32 Speaker A Not just occasional rapid assessments, but long-term monitoring programs that track population trends and detect change over time. 197:42 Speaker A It needs the communities who live there to have economic alternatives to the extractive activities that are damaging the forest and to be genuine partners in conservation rather than obstacles to it. And it needs the people who make decisions about international 197:55 Speaker A conservation funding to know that it exists, which is, in a modest way, part of what any conversation about the Baudó is doing. 198:03 Speaker A The science says this place is irreplaceable. That word gets used often enough in conservation context that it can start to feel like rhetoric. 198:12 Speaker A But in the Baudó's case, it is simply accurate in the most literal sense. The species there exist nowhere else. 198:19 Speaker A The evolutionary histories encoded in those species were written in this specific landscape over millions of years and cannot be reconstructed elsewhere. 198:30 Speaker A The genetic diversity held in populations of endemic frogs and birds and plants in these cloud forests is not stored in any backup location. 198:41 Speaker A If those populations disappear, that information is gone, not diminished, gone. The policy reality is complicated as it always is when you're trying to conserve something in a place that is also home to people with urgent economic needs, where the state has limited capacity to 198:57 Speaker A govern, where criminal networks have established footholds, and where the international community's interest is genuine, but its attention is short. 199:07 Speaker A None of that complexity makes the science less true. It just means that acting on what the science says requires patience, resources, political will, and the kind of sustained engagement that is harder to maintain than the initial enthusiasm that follows a discovery. 199:25 Speaker A There is something quietly important about the fact that the Baudó's best conservation story so far is not a dramatic rescue or a large-scale intervention. 199:34 Speaker A It is the quieter story of Embera families living along rivers in the cloud forest, maintaining their territories, using their knowledge of the forest in ways that have kept it standing through decades of pressure from multiple directions. 199:48 Speaker A That story does not make headlines. It does not generate the kind of images that conservation campaigns use to raise money. 199:56 Speaker A But it is the most concrete example of what actually working in the Baudó looks like. 200:03 Speaker A And it suggests that the most durable path forward is one that keeps those communities at the center of whatever comes next. 200:10 Speaker A And what comes next in terms of the scientific story of this range is still being written. 200:17 Speaker A There are almost certainly species in the Baudó's cloud forest that no researcher has yet encountered. 200:23 Speaker A There are almost certainly plant specimens in herbarium drawers that have not yet been formally described. There are almost certainly acoustic recordings waiting to be analyzed that will turn out to contain calls from animals not previously documented at those 200:37 Speaker A elevations. The archive is still being opened slowly by researchers working with limited resources in difficult conditions, and what it contains is still, in meaningful ways unknown. 200:51 Speaker A That unknowing is not a failure. It is a fact about the world, a reminder that there are still places where the biological inventory is genuinely incomplete, where the map still has territory that has not been fully read. 201:05 Speaker A The Baudó is one of those places. And what happens to it over the next few decades, whether the cloud forest holds, whether the endemic species persist, whether the the that have lived there for centuries continue to do so with security and 201:19 Speaker A dignity will say something about whether we are capable of holding on to the things we have not yet fully understood which in a way brings the story back to where it began to the image of those mountains on a map 201:31 Speaker A quiet and modest running along the Pacific coast in the rain there is something about looking at a map of the Baudó that stays with you not because it is dramatic or because it announces itself in any particular way 201:45 Speaker A it is not the kind of place that makes you gasp when you first see it it is a modest range a thin green line running along the Pacific coast of Colombia surrounded by names that most people outside the region have never 201:58 Speaker A read aloud and yet the longer you look at it the more it starts to feel like a question a quiet one but persistent what is actually in there that question has been at the center of this whole story and the honest answer 202:15 Speaker A the one that the science keeps returning to is that we do not fully know not even close every expedition that has made it into the Baudós interior has come back with something unexpected new frog species plant specimens that do not match 202:30 Speaker A anything in the existing literature bird behaviors that have not been recorded elsewhere and those are the expeditions that actually happened which have been by any reasonable measure very few the interior cloud forest of this range has seen less systematic biological 202:47 Speaker A survey work than almost any comparable area of similar ecological significance anywhere in the tropics that is not an exaggeration for effect it is simply what the record shows so when researchers say that there are almost certainly species alive in those 203:04 Speaker A mountains right now that no scientist has ever seen they are not being poetic they are making a probabilistic statement based on a very consistent pattern. You go there, you look carefully, you find something. The rate of discovery every time someone manages 203:19 Speaker A to get into the Baudó Highlands and spend real time there has been high enough, consistently enough, that the prediction holds. There is more. 203:29 Speaker A There is almost certainly more. The cloud forest is not empty of surprises. It is full of them. 203:36 Speaker A We just have not been there to encounter them yet. That idea sits with you in a particular way, depending on who you are and how you think about the natural world. 203:46 Speaker A For a biologist, it is professionally significant. The Baudó represents a genuine frontier. A place where the basic work of cataloging life on Earth is still unfinished. 203:58 Speaker A For someone who has never thought much about taxonomy or biogeography, it might land differently. 204:04 Speaker A It might feel more like a reminder that the world is still larger than we have made it in our imaginations. 204:10 Speaker A That there are corners of it, real physical corners, where things live and grow and call out to each other in the dark and have done so for millions of years without ever being named, without ever appearing in a field guide, without 204:26 Speaker A ever being photographed by anyone. There is something quietly astonishing about that. Not in a loud way. 204:34 Speaker A In the way that you feel when you're very still and you realize how much is happening around you that you are not paying attention to. 204:41 Speaker A The Baudó has been doing that, existing quietly, persistently, generating life, for longer than the concept of a species existed in any human mind. 204:53 Speaker A The range itself is old, geologically distinct from the Andes, formed from oceanic crust that was pushed upward over deep time into something that now catches rain and cloud and holds a version of the world that has not been 205:06 Speaker A replicated anywhere else. The Atrato Valley to the east has been keeping it separate from the rest of the Colombian mountain system for long enough that the animals and plants on its slopes have gone their own way. 205:18 Speaker A They have become, over generations beyond counting themselves, their own versions of things. And some of them are found nowhere else. 205:28 Speaker A That endemism, that biological exclusivity, is the Baudó's most important characteristic. It is what makes the range irreplaceable in the strictest sense of the word. 205:38 Speaker A The Baudó Guan moving through the forest canopy in the way it has for however many thousands of generations. 205:44 Speaker A The rain frogs calling from wet leaves in the cloud zone. Their voices part of a soundscape that has been playing out in some form since before the first human ever walked in that part of the world. 205:55 Speaker A The orchids on the mossy branches, the bromeliads catching water in their cups, the palms in the understory with their particular leaf shapes that are not quite like any palm anywhere else. These things are not generic representatives of tropical biodiversity. They are 206:09 Speaker A specific. They are local. They belong to this place in a way that cannot be transferred. 206:15 Speaker A And that is what makes the current moment feel significant. Not urgent in a panicked way, but significant in the way that things feel when you understand what is at stake and realize that the window for certain kinds of action is 206:27 Speaker A not unlimited. The deforestation rates in the Chocó are real. The illegal mining along the rivers is real. 206:35 Speaker A The climate trajectory that pushes cloud forest zones upward until the mountain runs out beneath them is real. 206:41 Speaker A The pressure on the Embera and Wounaan communities who have been the Baudó's most consistent human presence, and in many ways its most effective stewards, is real and ongoing. 206:54 Speaker A None of that has resolved. The previous chapters of this story laid out the complexity honestly, and it is genuinely complex. There is no clean ending where the right institution stepped in and the right protections were established and the forest was 207:10 Speaker A secured. That story has not happened yet. What has happened is slower and more uncertain. Some researchers returning to the region after the years of conflict made fieldwork impossible. 207:22 Speaker A Some conservation organizations building programs that try to work with communities rather than around them. 207:28 Speaker A Some expansion of biological survey work using newer methods like environmental DNA and acoustic monitoring that reduce the need for large expeditions and allow local community members to participate in data collection in practical ways. 207:43 Speaker A Progress that is real but modest and that is happening against a backdrop of threats that are also real and not modest at all. 207:51 Speaker A What you are left with when you sit with the Baudó story for a while is something that resists easy framing. It is not a triumph. It is not a tragedy. At least not yet. It is an ongoing situation 208:03 Speaker A involving an extraordinary place, a set of endemic species that exist nowhere else. Communities of people with deep knowledge and legitimate rights and a broader world that has not yet decided how much attention and resources this particular corner of the planet 208:20 Speaker A deserves. The Baudó has never been famous. It has never had the cultural visibility of the Amazon or the Galapagos or the Congo Basin. 208:29 Speaker A It has not been the setting of a celebrated documentary or the subject of a widely read popular book. 208:36 Speaker A It sits in a department of Colombia that most people outside Colombia could not locate on a map. In a region that is known to the extent it is known at all primarily for its rainfall and its difficulty. And yet it contains in its 208:51 Speaker A cloud forests and its river valleys and its mossy highland slopes a biological record that is genuinely extraordinary. 209:00 Speaker A A record of what happens when life is given time and isolation and an extraordinary amount of water and left largely alone to find its own way. 209:11 Speaker A There is a version of the Baudó's future that is hopeful. It involves the formal protection of the cloud forest interior being established and enforced. 209:20 Speaker A It involves the indigenous territorial rights of the Embera and Wounaan being strengthened in ways that give those communities real security and real agency. 209:30 Speaker A It involves sustained biological survey work that finally produces a reasonably complete picture of what the range contains, not just a series of snapshots taken during brief expeditions, but a long-term monitoring program that tracks change over time and builds the 209:48 Speaker A kind of baseline data that conservation decisions actually require. It involves the communities who live along the Baudó River and its tributaries having economic options that do not require destroying the forest they have lived in for centuries. 210:04 Speaker A That version is possible. The conditions for it are not impossible to imagine. There's also a version that goes the other way, where the logging roads push further into the interior, where the mining expands, where the cloud forest zone shrinks upward, and the species 210:19 Speaker A that depend on it find themselves with less and less room, where the communities are displaced by economic or by conflict, taking their knowledge of the forest with them into situations where it cannot be applied, where the herbarium drawers hold 210:34 Speaker A specimens of species that no longer exist in the wild by the time someone gets around to formally describing them. 210:41 Speaker A That version is also possible. The pressures that would produce it are already present. Which version actually unfolds will depend on a lot of things that are outside the the of any single conversation. 210:53 Speaker A Political decisions, funding flows, the pace of Colombia's post-conflict stabilization, the trajectory of global climate change, the choices made by individual researchers and conservation organizations and community leaders and government officials over the coming years and decades. 211:11 Speaker A It is a genuinely open question. But part of what determines the outcome of open questions is whether people know that the question exists. 211:19 Speaker A Whether the Baudó is part of anyone's picture of what is worth protecting, worth studying, worth paying attention to. 211:27 Speaker A And that is where a quiet conversation about a mountain range that most people have never heard of can, in its own small way, matter. 211:35 Speaker A Not because any single conversation changes policy, but because the accumulation of awareness, the slow distributed process by which a place becomes known and valued and visible, is part of how the world decides what it is willing to protect. 211:51 Speaker A The Baudó has been there for a very long time. It was there before anyone was thinking about conservation, before anyone had a framework for endemism or biogeography or evolutionary isolation. 212:04 Speaker A It was there when the Embera arrived and learned its rivers and its plants and its animals. 212:09 Speaker A It was there when the first outside botanists collected specimens from its edges and sent them back to herbaria in Bogotá and Washington and London. 212:19 Speaker A It was there through the decades of conflict when almost no one could go near it. 212:24 Speaker A It is there now, in the rain, which is almost always falling somewhere in that range, on the mossy branches and the calling frogs and the birds moving through the canopy and the things that have not yet been named. And somewhere 212:37 Speaker A in those cloud forests right now, there is almost certainly a small animal, a frog, maybe, or a bat, or a tiny rodent in the leaf litter, that has never been seen by a scientist. 212:50 Speaker A That has a life in the full biological sense of that word. That is part of a population, part of a food web, part of an ecosystem that has been running in some form for millions of years. 213:02 Speaker A It does not know it is undiscovered. It is simply living in the way that things live when no one is watching. 213:09 Speaker A That image, the unnamed creature in the wet forest, going about its existence in the dark, is not a sad one, really. 213:18 Speaker A It is more like a reminder. The world is still doing things we have not cataloged. Life is still happening in places we have not fully mapped. The Baudo is not unique in this, but it is one of the clearest examples 213:31 Speaker A of it. A place where the gap between what exists and what we know exists is large enough to be meaningful, and small enough geographically that it feels like something we could, if we chose to, actually close. 213:45 Speaker A Whether we choose to is the question the Baudo is quietly asking. It has been asking it for a while. 213:52 Speaker A It will keep asking it in the rain for as long as the forest stands. 213:57 Speaker A Thank you for spending this time here. Wherever you are tonight, whatever the weather is outside your window, it means something that you listened. 214:05 Speaker A These places matter more when more people know about them. And the Baudo, quiet, wet, extraordinary, and still largely unknown, is very much worth knowing about. Topics: Serranía del Baudó Chocó Colombia biodiversity cloud forest Pacific coast endemism Embera Wounaan conservation Study this video - [Flashcards from this video](https://sozai.app/tools/ai-flashcard-generator/?from=transcript&id=84892) - [Quiz on this video](https://sozai.app/tools/quiz-generator/?from=transcript&id=84892) Free, made by AI from this transcript. No signup. --- This is the markdown twin of https://sozai.app/transcript/youtube-video-transcript-488/ — the same content, without the markup. Published by SozAI (https://sozai.app). Reuse and quotation are allowed with attribution and a link back. Machine-readable index: https://sozai.app/llms.txt · data API: https://sozai.app/api/