| | Other topics
News articles on Fragmentation
Mongabay.com news articles on Fragmentation in blog format. Updated regularly.
(03/27/2014) How much is a forest really worth? And what is the cost of forest degradation? These values are difficult to estimate, but according to Dr. Phillip Fearnside, we need to do a better job. For nearly forty years, Fearnside has lived in Amazonia doing ecological research, looking at the value of forests in terms of environmental or ecosystem services such as carbon storage, water cycling, and biodiversity preservation. Fearnside then works to convert these services into a basis for sustainable development for rural populations.
Bizarre, endangered bird discovered in high densities
(03/24/2014) The turkey-sized, noisy, fruit-feasting guans are arguably one of the strangest wildlife sightings in the tropical forests of Central and South America. Ancient animals, these birds are members of the Cracidae family—which also include equally-odd currasows and chachalacas—and are actually distantly related to megapode, or mound-building, birds of Australiasia. A new study in mongabay.com's open-access journal Tropical Conservation Science looks at a particularly endangered guan: the Cauca gaun (Penelope perspicax).
Scientists discover new gecko hanging-on in single forest fragment
(02/17/2014) Scientists have identified a new species of day gecko that is the largest in its genus (Cnemaspis) to be found in Sri Lanka. To date, it has been observed only within the Rammalakanda Reserve in southern Sri Lanka, an area spanning just 1,700 hectares, raising questions about the viability of this population and hence the species' long-term prospects.
Next big idea in forest conservation? Connecting forest fragments
(01/31/2014) Dr. Stuart Pimm is an expert in extinctions: why they happen, how fast they happen, and how they can be prevented. Reconnecting forest fragments and avoiding fragmentation, according to Pimm, are among the most crucial things we can do to conserve global biodiversity. His organization SavingSpecies identifies areas at-risk for extinctions and helps local organizations fundraise so they can protect and restore habitats and safeguard biodiversity.
Bornean elephant meets palm oil: saving the world's smallest pachyderm in a fractured landscape
(10/01/2013) In the Malaysian state of Sabah, where most conservation students are still foreigners—either European or American—Nurzahafarina Othman stands out: not only is she Malaysian, a Muslim, and a mother of a young daughter, but she's rapidly becoming a top researcher and champion for the world's smallest elephant: the Bornean elephant (Elephas maximus borneensis). Although sometimes described as a pygmy elephant, they still weigh 2,000 kilograms (4,400 pounds). The origin of these 'tiny' elephants in Malaysian Borneo have baffled scientists for decades.
'Ecological Armageddon': mammals vanish entirely from forest fragments after 25 years
(09/26/2013) As tropical forests worldwide are increasingly cut into smaller and smaller fragments, mammal extinctions may not be far behind, according to a new study in Science. Tracking native smalls mammals in Chiew Larn Reservoir, Thailand for over 25 years, scientists found a stunning and rapid decline in mammal populations, until most forests were almost completely emptied of native mammals.
Scientists catch boa constrictor eating a howler monkey (photos)
(09/02/2013) In a world first, scientists have captured images and video of a boa constrictor attacking and devouring whole a femle howler monkey, one of the largest new world primates weighing in at around 4 kilograms (8.8 pounds). The rare predation event was recorded in a tiny forest fragment (2.5 hectares) in the Brazilian state of Rondonia by Erika Patricia Quintino, a PhD student at the Pontifical Catholic University of Rio Grande do Sul.
Forest fragmentation leading to higher extinction rates
(08/13/2013) The world's species are in worse trouble than widely-assumed, according to a new paper in the Proceedings of the National Academy of Sciences (PNAS), which reevaluates how scientists estimate extinction rates. The new model takes into account the impact of forest fragmentation on extinction rates for the first time, filling in a gap in past estimates. Much of the world's tropical forests, which house the bulk of the world's species, have been whittled down to fragments: small forest islands that no longer connect to larger habitat. According to the paper, species confined to fragments have a higher likelihood of vanishing.
Loss of big fruit-eating birds impacting trees in endangered rainforests
(05/31/2013) The extinction of large, fruit-eating birds in fragments of Brazil's Atlantic rainforest has caused palm trees to produce smaller seeds over the past century, impacting forest ecology, finds a study published in the journal Science.
Still hope for tropical biodiversity in human modified landscapes
(04/09/2013) As primary forests become increasingly rare and expensive to protect, many ecologists are looking to better management of Human Modified Landscapes (HMLs) to shepherd and shield biodiversity in the tropics. Secondary forests, selectively logged forests and lands devoted to sustainable agriculture already play an important role in conservation efforts. However, the idea that HMLs will serve as a "Noah's Ark" for biodiversity, is controversial.
Peruvian night monkey threatened by vanishing forests, lost corridors
(03/18/2013) The Peruvian night monkey (Aotus miconax) is one of the world's least known primates, having never been studied in the wild--until now. Found only in the cloud forests of northern Peru, a group of scientists with Neotropical Primate Conservation and the National University of Mayor San Marcos have spent 12 months following a single group of this enigmatic monkey species in a small forest patch. The results of their research, published in mongabay.com's open access journal Tropical Conservation Science, shows that protecting forests, even small forest fragments, is vital to the species' survival.
New giant flying frog discovered near city of 9 million
(01/09/2013) Jodi Rowley is no stranger to discovering new amphibians—she's helped describe over 10 in her short career thus far—but still she was shocked to discover a new species of flying frog less than 100 kilometers from a major, bustling Southeast Asian metropolis, Ho Chi Minh City. Unfortunately, the new frog, dubbed Helen's tree frog (Rhacophorus helenae), may be on the verge of extinction, according to the description published in the Journal of Herpetology.
Rehabilitated orangutans in danger if industrial project proceeds in Borneo
(10/22/2012) The proposed extension of an industrial area in East Kalimantan, Indonesia will likely mean the end of a population of rehabilitated orangutans who reside there, according to the Indonesian environmental group Peduli Teluk Balikpapan. The Kariangau Industrial Area (KIK) will comprise 5,130 hectares of land currently covered by hardwood forests and mangroves when completed, including one third of orangutan habitat in Sungai Wain forest—a crucial portion that is not within the boundaries of the Sungai Wain Protection Forest and therefore not under any governmental protection.
Key mammals dying off in rainforest fragments
(08/15/2012) When the Portuguese first arrived on the shores of what is now Brazil, a massive forest waited for them. Not the Amazon, but the Atlantic Forest, stretching for over 1.2 million kilometers. Here jaguars, the continent's apex predator, stalked peccaries, while tapirs waded in rivers and giant anteaters unearthed termites mounds. Here, also, the Tupi people numbered around a million people. Now, almost all of this gone: 93 percent of the Atlantic Forest has been converted to agriculture, pasture, and cities, the bulk of it lost since the 1940s. The Tupi people are largely vanished due to slavery and disease, and, according to a new study in the open access journal PLoS ONE, so are many of the forest's megafauna, from jaguars to giant anteaters.
Tigers vs. coal in India: when big energy meets vanishing cats
(08/01/2012) Burning coal fuels climate change, causes acid rain, and spreads toxic pollutants into the environment, but now a new Greenpeace report warns that coal may also imperil the world's biggest feline: the tiger. Home to world's largest population of tigers—in this case the Bengal subspecies (Panthera tigris tigris)—India is also the world's third largest coal producer. The country's rapacious pursuit of coal—it has nearly doubled production since 2007—has pushed the industry into tiger territory, threatening to destroy forests and fragment the tiger's already threatened population.
Experts: sustainable logging in rainforests impossible
(07/19/2012) Industrial logging in primary tropical forests that is both sustainable and profitable is impossible, argues a new study in Bioscience, which finds that the ecology of tropical hardwoods makes logging with truly sustainable practices not only impractical, but completely unprofitable. Given this, the researchers recommend industrial logging subsidies be dropped from the UN's Reducing Emissions from Deforestation and Forest Degradation (REDD+) program. The study, which adds to the growing debate about the role of logging in tropical forests, counters recent research making the case that well-managed logging in old-growth rainforests could provide a "middle way" between conservation and outright conversion of forests to monocultures or pasture.
Historic birth for the Sumatran rhino
(06/24/2012) After two miscarriages and a pregnancy that lasted 15 months, Ratu, a female Sumatra rhino, has given birth to a healthy male calf, conservationists happily announced this weekend. The birth at a rhino sanctuary in Way Kambas National Park in Sumatra is the culmination of years of hard work, dedication, and the best reproductive rhino science in the world. This is the first captive birth in Indonesia, and only the fourth captive birth for the Sumatran rhino (Dicerorhinus sumatrensis) in the last hundred years. The successful birth brings new hope for one of the world's rarest mammals: less than 200 Sumatra rhinos are thought to survive in the world.
Can loggers be conservationists?
(05/10/2012) Last year researchers took the first ever publicly-released video of an African golden cat (Profelis aurata) in a Gabon rainforest. This beautiful, but elusive, feline was filmed sitting docilely for the camera and chasing a bat. The least-known of Africa's wild cat species, the African golden cat has been difficult to study because it makes its home deep in the Congo rainforest. However, researchers didn't capture the cat on video in an untrammeled, pristine forest, but in a well-managed logging concession by Precious Woods Inc., where scientist's cameras also photographed gorillas, elephants, leopards, and duikers.
Chimp conservation requires protecting fragmented river forests in Uganda
(03/19/2012) Forest fragments along riversides in Uganda may make good habitats for chimpanzees but remain unprotected, according to a new study in mongabay.com's open access journal Tropical Conservation Society (TCS). Researchers surveyed a riverine forest known as Bulindi in Uganda, in-between Budongo and Bugoma Forest Reserves, to determine if it was suitable for the long-term survival of eastern chimpanzee (Pan troglodytes schweinfurthii) populations.
What a Bornean elephant wants: more protected forests and wildlife corridors
(02/16/2012) Forest fragmentation and destruction is imperiling the Bornean elephant (Elephas maximus borneensis), according to a new paper published in PLoS ONE. Using satellite collars to track the pachyderms for the first time in the Malaysian state of Sabah, scientists have found that the elephants are extremely sensitive to habitat fragmentation from palm oil plantations and logging.
Tropical ecologist: Australia must follow U.S. and EU in banning illegally logged wood
(02/09/2012) Australia should join the widening effort to stamp out illegal logging, according to testimony given this week by tropical ecologist William Laurance with James Cook University. Presenting before the Australian Senate's rural affairs committee, Laurance argued that the massive environmental and economic costs of illegal logging worldwide should press Australia to tighten regulations against importing illegally logged timber at home.
Rare apes saved in India
(11/30/2011) Two Hoolock gibbons have been successfully translocated from a fragmented forest to Mehao Wildlife Sanctuary in the beginning of a desperate bid to save 18 family groups of India's last apes. Living near the village of Dello in northeastern India, the apes were straining to survive amid heavy deforestation and fragmentation.
Giant rat plays big ecological role in dispersing seeds
(11/16/2011) Rats are rarely thought of as heroes. In fact, in many parts of the world they are despised, while in others they serve largely as food. But, scientists are now discovering that many tropical forest rodents, including rats, serve as heroic seed dispersers, i.e. eating fruits and nuts, and carrying seeds far from the parent tree, giving a chance to a new sapling. While this has been documented with tropical rodents in South America like agoutis and acouchis, a new study in Biotropica documents the first successful seed dispersal by an African rodent: the Kivu giant pouched rat (Cricetomys kivuensis), one of four species of giant African rats.
Atlantic Forest stores less carbon due to drastic fragmentation
(09/26/2011) The Atlantic Forest in Brazil is one of the most fragmented and damaged forests in the world. Currently around 12 percent of the forest survives, with much of it in small fragments, many less than 100 hectares. A new study in mongabay.com's open-access journal Tropical Conservation Science finds that the bloodied nature of the Atlantic Forest impacts its capacity to sequester carbon. The study found that 92 percent of the forest stored only half its potential carbon due to fragmentation and edge-effects, which includes damage due to winds and exposure to drought.
Loving the tapir: pioneering conservation for South America's biggest animal
(09/11/2011) Compared to some of South America's megafauna stand-out species—the jaguar, the anaconda, and the harpy eagle come to mind—the tapir doesn't get a lot of love. This is a shame. For one thing, they're the largest terrestrial animal on the South American continent: pound-for-pound they beat both the jaguar and the llama. For another they play a very significant role in their ecosystem: they disperse seeds, modify habitats, and are periodic prey to big predators. For another, modern tapirs are some of the last survivors of a megafauna family that roamed much of the northern hemisphere, including North America, and only declined during the Pleistocene extinction. Finally, for anyone fortunate enough to have witnessed the often-shy tapir in the wild, one knows there is something mystical and ancient about these admittedly strange-looking beasts.
Cameratraps take global snapshot of declining tropical mammals
(08/17/2011) A groundbreaking cameratrap study has mapped the abundance, or lack thereof, of tropical mammal populations across seven countries in some of the world's most important rainforests. Undertaken by The Tropical Ecology Assessment and Monitoring Network (TEAM), the study found that habitat loss was having a critical impact on mammals. The study, which documented 105 mammals (nearly 2 percent of the world's known mammals) on three continents, also confirmed that mammals fared far better—both in diversity and abundance—in areas with continuous forest versus areas that had been degraded.
Lessons from the world's longest study of rainforest fragments
(08/15/2011) For over 30 years, hundreds of scientists have scoured eleven forest fragments in the Amazon seeking answers to big questions: how do forest fragments' species and microclimate differ from their intact relatives? Will rainforest fragments provide a safe haven for imperiled species or are they last stand for the living dead? Should conservation focus on saving forest fragments or is it more important to focus the fight on big tropical landscapes? Are forest fragments capable of regrowth and expansion? Can a forest—once cut-off—heal itself? Such questions are increasingly important as forest fragments—patches of forest that are separated from larger forest landscapes due to expanding agriculture, pasture, or fire—increase worldwide along with the human footprint.
Balancing agriculture and rainforest biodiversity in India’s Western Ghats
(08/08/2011) When one thinks of the world's great rainforests the Amazon, Congo, and the tropical forests of Southeast Asia and Indonesia usually come to mind. Rarely does India—home to over a billion people—make an appearance. But along India’s west coast lies one of the world's great tropical forests and biodiversity hotspots, the Western Ghats. However it's not just the explosion of life one finds in the Western Ghats that make it notable, it's also the forest's long—and ongoing—relationship to humans, lots of humans. Unlike many of the world's other great rainforests, the Western Ghats has long been a region of agriculture. This is one place in the world where elephants walk through tea fields and tigers migrate across betel nut plantations. While wildlife has survived alongside humans for centuries in the region, continuing development, population growth and intensification of agriculture are putting increased pressure on this always-precarious relationship. In a recent paper in Biological Conservation, four researchers examine how well agricultural landscapes support biodiversity conservation in one of India's most species-rich landscapes.
Elephants: the gardeners of Asia's and Africa's forests
(04/25/2011) It seems difficult to imagine elephants delicately tending a garden, but these pachyderms may well be the world's weightiest horticulturalist. Elephants both in Asia and Africa eat abundant amounts of fruit when available; seeds pass through their guts, and after expelled—sometimes tens of miles down the trail—sprouts a new plant if conditions are right. This process is known by ecologists as 'seed dispersal', and scientists have long studied the 'gardening' capacities of monkeys, birds, bats, and rodents. Recently, however, researchers have begun to document the seed dispersal capacity of the world's largest land animal, the elephant, proving that this species may be among the world's most important tropical gardeners.
Cloud forest dung beetles in India point to 'fossil ecosystem'
(03/28/2011) In the cloud forests and grasslands of India's Western Ghats, known as sholas, researchers have for the first time comprehensively studied the inhabiting dung beetle populations. The resulting study in mongabay.com's open access journal Tropical Conservation Science, has led scientists to hypothesize that the beetles in concordance with the sheep-like mammal, the nilgiri tahr (Nilgiritragus hylocrius), may be a sign of a 'fossil ecosystem'.
Critically endangered capuchins make tools to gather termites
(03/10/2011) Less than 200 blond capuchins (Cebus falvius) survive in the highly-fragmented habitat of Brazil's Atlantic Forest. But this tiny group of monkeys, only rediscovered in 2006, is surprising scientists with its adept tool-using abilities. Displaying similar behavior to that which made the chimpanzees of Gombe famous worldwide, the blond capuchins modify sticks to gather termites from trees; however, according to the study published in Biology Letters the blond capuchins use two techniques never witnessed before: twisting the stick when inside the termite nest and tapping the nest before inserting the stick.
New species of zombie-creating fungi discovered
(03/02/2011) As everyone knows, human zombies are created when an uninfected human is bitten by a member of the brain-craving undead. But what about ant zombies? Yes, that's right: ant zombies.
Saving Madagascar's largest carnivorous mammal: the fossa
(02/17/2011) Madagascar is a land of wonders: dancing lemurs, thumbnail-sized chameleons, the long-fingered aye-aye, great baobab trees, and the mighty fossa. Wait—what? What's a fossa? It's true that when people think of Madagascar rarely do they think of its top predator, the fossa—even if they are one of the few who actually recognizes the animal. While the fossa gained a little notice in the first Madagascar film by DreamWorks, its role in the film was overshadowed by the lemurs. In this case, art imitates life: in conservation and research this feline-like predator has long lived in the shadow of its prey, the lemur. Even scientists are not certain what to do with the fossa: studies have shown that it's not quite a cat and not quite a mongoose and so the species—and its few Malagasy relatives—have been placed in their own family, the Eupleridae, of which the fossa (Cryptoprocta ferox) is the biggest. But if this is the first you've heard of such matter, don't feel bad: one of the world's only fossa-researchers, Mia-Lana Lührs also stumbled on the species.
Camera trap photos: big mammals survive in fragmented forest in Borneo
(01/30/2011) Camera trap photos taken in the fragmented forest along the Kinabatangan River in Borneo have revealed a number of key mammal species surviving despite forest loss mostly due to expanding palm oil plantations. The photos are apart of a recent program to monitor carnivores along the Kinabatangan River in the Malaysian state of Sabah by the Danau Girang Field Center (DGFC), the NGO HUTAN, Oxford University's Wildlife Conservation Research Unit (WildCRU), and the Sabah Wildlife Department.
Scientists to document impact of converting rainforest into oil palm plantations
(01/30/2011) Scientists have partnered with one of the world's largest palm oil producers to measure the impact of converting tropical forest into an oil palm plantation, reports Nature News.
Forest fragment climate not driven by edge-effect
(12/19/2010) Examining ten forest fragments in Brazil's Atlantic Forest, researchers have undercut the theory that the climate of forest fragment' is driven by the edge-effect. Writing in mongabay.com's open source journal Tropical Conservation Science, researchers found that edge-effect was too simple to explain the microclimate of isolated forest fragments from 3 to 3,500 hectares large, each at least 80-years-old.
Photos: surprises discovered in tiny forest fragment surrounded by palm oil
(11/10/2010) Researchers have uncovered an astounding number of species in a tiny protected forest fragment surrounded on all side by palm oil plantations in the Indonesian island of Sumatra. Researchers with the Zoological Society of London (ZSL), Queen Mary, University of London and the Durrell Institute of Conservation and Ecology (DICE – University of Kent) recorded sun bear (Helarctos malayanus), Malayan tapir (Tapirus indicus), the banded langur (Presbytis femoralis), and agile gibbons (Hylobates agilis), but most notable, was the first record ever of the Ridley's leaf-nosed bat (Hipposideros ridleyi) in Sumatra. The discoveries highlight the importance of preserving even small forest fragments surrounded by agriculture.
Environmentalists must recognize 'biases and delusions' to succeed
(10/18/2010) As nations from around the world meet at the Convention on Biological Diversity in Nagoya, Japan to discuss ways to stem the loss of biodiversity worldwide, two prominent researchers argue that conservationists need to consider paradigm shifts if biodiversity is to be preserved, especially in developing countries. Writing in the journal Biotropica, Douglas Sheil and Erik Meijaard argue that some of conservationists' most deeply held beliefs are actually hurting the cause.
Satellites show fragmented rainforests significantly drier than intact forest
(10/13/2010) A new study in Biological Conservation has shown that edge forests and forest patches are more vulnerable to burning because they are drier than intact forests. Using eight years of satellite imagery over East Amazonia, the researchers found that desiccation (extreme dryness) penetrated anywhere from 1 to 3 kilometers into forests depending on the level of fragmentation.
Ugandan forest being stripped for fuel wood
(09/27/2010) A new study in the open access journal of Tropical Conservation Science finds that the Kasagala forest reserve in central Uganda is losing important tree species and suffering from low diversity of species. Researchers believe that forest degradation for charcoal and firewood has put heavy pressure on this ecosystem.
Stunning monkey discovered in the Colombian Amazon
(08/11/2010) While the Amazon is being whittled away on all sides by logging, agriculture, roads, cattle ranching, mining, oil and gas exploration, today's announcement of a new monkey species proves that the world's greatest tropical rainforest still has many surprises to reveal. Scientists with the National University of Colombia and support from Conservation International (CI) have announced the discovery of a new monkey in the journal Primate Conservation on the Colombian border with Peru and Ecuador. The new species is a titi monkey, dubbed the Caquetá titi ( Callicebus caquetensis). However, the announcement comes with deep concern as researchers say it is likely the new species is already Critically Endangered due to a small population living in an area undergoing rapid deforestation for agriculture.
Rare primate photographed for the first time
(07/18/2010) The Horton Plains slender loris (Loris tardigradus nycticeboides, thought extinct by researchers for over six decades, has finally posed for a photograph. This small nocturnal primate lives in the surviving montane tropical forest of Sri Lanka. The species was photographed during a recent expedition by the Zoological Society of London (ZSL)'s EDGE program in conjunction with Sri Lankan researchers.
Forest loss in India likely worse than conventionally believed
(07/06/2010) Researchers have questioned 2009 findings by the Forest Survey of India (FSI) that found that India's forests were, unlike many tropical Asian nations', on the rebound. According to the FSI, Indian forests had grown by almost five percent from the 1990s. Yet, were these finding too good to be true?
Forest loss occurring around Kibale National Park in Uganda
(06/28/2010) A new study in Tropical Conservation Science finds that Kibale National Park in Uganda has retained its tropical forest despite pressures of a dense human population and large-scale clearing activities just beyond the border of the park. Home to twelve primate species, including Chimpanzees, the park is known as a safe-haven for African primates.
How do Asian elephants survive in fragmented and unprotected landscapes?
(06/28/2010) A new study in Tropical Conservation Science has found that Asian elephants living in a combination of fragmented forests and agricultural landscapes still depend on natural landscapes—rivers and forests—for survival. Following two herds of Asian elephants (Elephas maximus) in the Valparai plateau among the Anamalai Hills of India for three years, researchers found that the elephants spent much of their time, relative to their availability, near rivers and amid forest fragments. When they entered agricultural landscapes they preferred Eucalyptus and coffee to tea.
To save species, Malaysia implements daring plan to trap wild Bornean rhino
(06/13/2010) With less than 40 individuals left in the world, the Bornean rhino is a small step away from extinction. Yet conservationists and government officials in the Malaysian state of Sabah are not letting this subspecies of the Sumatran rhino go without a fight. Implementing a daring last-ditch plan to save the animal, officials are working to capture a wild female to mate with a fertile male named Tam, who was rescued after wandering injured into a palm oil plantation two years ago.
A total ban on primary forest logging needed to save the world, an interview with activist Glen Barry
(06/02/2010) Radical, controversial, ahead-of-his-time, brilliant, or extremist: call Dr. Glen Barry, the head of Ecological Internet, what you will, but there is no question that his environmental advocacy group has achieved major successes in the past years, even if many of these are below the radar of big conservation groups and mainstream media. "We tend to be a little different than many organizations in that we do take a deep ecology, or biocentric approach," Barry says of the organization he heads. "[Ecological Internet] is very, very concerned about the state of the planet. It is my analysis that we have passed the carrying capacity of the Earth, that in several matters we have crossed different ecosystem tipping points or are near doing so. And we really act with more urgency, and more ecological science, than I think the average campaign organization."
Long-distance seed dispersal and hunting, an interview with Kimberly Holbrook
(05/24/2010) Scientists are just beginning to uncover the complex relationship between healthy biodiverse tropical forests and seed dispersers—species that spread seeds from a parent tree to other parts of the forest including birds, rodents, primates, and even elephants. By its very nature this relationship consists of an incredibly high number of variables: how abundant are seed dispersers, which animals spread seeds the furthest, what species spread which seeds, how are human impacts like hunting and deforestation impacting successful dispersal, as well as many others. Dr. Kimberly Holbrook has begun to answer some of these questions.
How hornbills keep Asian rainforests healthy and diverse, an interview with Shumpei Kitamura
(04/26/2010) Hornbills are one of Asia's most attractive birds. Large, colorful, and easier to spot than most other birds, hornbills have become iconic animals in the tropical forests of Asia. Yet, most people probably don't realize just how important hornbills are to the tropical forests they inhabit: as fruit-eaters, hornbills play a key role in dispersing the seeds of tropical trees, thereby keeping forests healthy and diverse. Yet, according to tropical ecologist and hornbill-expert Shumpei Kitamura, these beautiful forest engineers are threatened by everything from forest loss to hunting to the pet trade.
Turning to the matrix: a more accurate way to predict extinction
(04/14/2010) According to most conservationists the globe is striding into the midst of the Sixth Mass Extinction. Species populations worldwide are dropping and in many cases species are vanishing all together due to pollution, climate change, poaching and hunting, overconsumption, invasive species, and exotic diseases, but no threat proves more pervasive and devastating for the world's species than habitat loss.
Hope for survival as isolated orangutans joined by rope bridge
(04/11/2010) Researchers in the Malaysian state of Sabah in Borneo are joyful after receiving confirmation that a young male orangutan used a rope bridge to cross a river, which has separated one orangutan population from another. Due to logging and clearing forests for oil palm plantations, which cover 18 percent of land in Sabah, orangutans on the Kinabantangan River have been cut into fragmented populations.
Seed dispersal in the face of climate change, an interview with Arndt Hampe
(04/05/2010) Without seed dispersal plants could not survive. Seed dispersal, i.e. birds spreading seeds or wind carrying seeds, means the mechanism by which a seed is moved from its parent tree to a new area; if fortunate the seed will sprout in its new resting place, produce a plant which will eventually seed, and the process will begin anew. But in the face of vast human changes—including deforestation, urbanization, agriculture, and pasture lands, as well as the rising specter of climate change, researchers wonder how plants will survive, let alone thrive, in the future?
Diverse habitats needed for survival of small mammals in Mexico
(03/29/2010) A new study in Tropical Conservation Science shows that small tropical mammals in Mexico—bats and rodents—require a variety of habitats to thrive. Surveying mammal populations in the Isthmus of Tehuantepec, Oaxaca, Mexico, researchers found that sites comprising the greatest habitat diversity carried also the greatest diversity of rodents. In turn bats lived in all variety of habitats and moved easily from one to another.
Finding forest for the endangered golden-headed lion tamarin
(03/29/2010) Brazil's golden-headed lion tamarin is a small primate with a black body and a bright mane of gold and orange. Listed as Endangered by the IUCN Red List, the golden-headed lion tamarin (Leontopithecus chrysomelas) survives in only a single protected reserve in the largely degraded Atlantic Forest in Brazil. Otherwise its habitat lies in unprotected patches and fragments threatened by urbanization and agricultural expansion. Currently, a natural gas pipeline is being built through prime tamarin habitat.
Last chance to save Bangladeshi forest: 90 percent of the Sal ecosystem is gone
(03/29/2010) Considered the most threatened ecosystem in Bangladesh, the moist deciduous Sal forest (Shorea robusta) is on the verge of vanishing. In 1990 only 10 percent of the forest cover remained, down from 36 percent in 1985 according to statistics from the Food and Agricultural Organization (FAO). A new study in the online open-access journal Tropical Conservation Science looks at the threats posed to the Shal forest and ways in which it may still be saved.
Photos: Madagascar's wonderful and wild frogs, an interview with Sahonagasy
(03/03/2010) To save Madagascar's embattled and beautiful amphibians, scientists are turning to the web. A new site built by herpetologists, Sahonagasy, is dedicated to gathering and providing information about Madagascar's unique amphibians in a bid to save them from the growing threat of extinction. "The past 20 years have seen resources wasted because of a poor coordination of efforts," explains Miguel Vences, herpetologist and professor at the Technical University of Braunschweig. "Many surveys and reports have been produced that were never published, many tourists found and photographed amphibians but these photos were not made available to mapping projects, many studies carried out by Malagasy students did not make use of literature because it was not available."
The Caribbean's wonderfully weird (and threatened) mammals, an interview with Jose Nunez-Mino
(01/18/2010) Not many people know the solenodon and the hutia, yet for the fortunate few that have encountered them, these strange little-studied mammals—just barely holding on in the Caribbean island of Hispaniola—deserve to be stars of the animal kingdom. "I could not quite believe it the first time I held a solenodon; I was in utter awe of this mesmerizing mammal. […] They have a long flexible snout which is all down to the fact that it is joined to the skull by a unique ball-and-socket joint. This makes it look as if the snout is almost independent to the rest of the animal. You can’t help but feel fascinated by the snout and inevitably it does make you smile," Dr. Jose Nunez-Mino, the Project Manager for a new initiative to study and conserve the island's last mammals, told mongabay.com in an interview.
What types of primates are most prone to extinction in small forest fragments?
(12/06/2009) According to the most recent IUCN assessment, 48 percent of primates are threatened with extinction. Major threats to primates include habitat loss and fragmentation, hunting, and the wildlife trade. A new paper published in Tropical Conservation Science looked at ones of these threats — fragmentation — in an effort to determine what traits put primates at highest risk of extinction in forest fragments. Traits investigated all related to various aspects of primate biology, including: the amount of habitat needed, reproductive rate, and types of specialization. Surprisingly the authors, Matthew A. Gibbons and Alexander H. Harcourt of the University of California at Davis, found no significant relationship between extinction risk and any of the biological parameters.
Face-to-face with what may be the last of the world's smallest rhino, the Bornean rhinoceros
(12/01/2009) Nothing can really prepare a person for coming face-to-face with what may be the last of a species. I had known for a week that I would be fortunate enough to meet Tam. I'd heard stories of his gentle demeanor, discussed his current situation with experts, and read everything I could find about this surprising individual. But still, walking up to the pen where Tam stood contentedly pulling leaves from the hands of a local ranger, hearing him snort and whistle, watching as he rattled the bars with his blunted horn, I felt like I was walking into a place I wasn't meant to be. As though I was treading on his, Tam's space: entering into a cool deep forest where mud wallows and shadows still linger. This was Tam's world; or at least it should be.
Emotional call for palm oil industry to address environmental problems
(10/21/2009) During what was at times an emotional speech, Sabah's Minister of Tourism, Culture, and Environment, Datuk Masidi Manjun, called on the palm oil industry to stop polluting rivers and work with NGOs to save orangutans and other wildlife. He delivered the speech on the first day of an Orangutan Conservation Colloquium held in early October in the Malaysian state of Sabah on the island of Borneo.
Palm oil industry pledges wildlife corridors to save orangutans
(10/03/2009) In an unlikely—and perhaps tenuous—alliance, conservationists and the palm oil industry met this week to draw up plans to save Asia's last great ape, the orangutan. As if to underscore the colloquium's importance, delegates on arriving in the Malaysian State of Sabah found the capital covered in a thick and strange fog caused by the burning of rainforests and peat lands in neighboring Kalimantan. After two days of intensive meetings the colloquium adopted a resolution which included the acquisition of land for creating wildlife buffer zones of at least 100 meters along all major rivers, in addition to corridors for connecting forests. Researchers said such corridors were essential if orangutans were to have a future in Sabah.
Will tropical trees survive climate change?, an interview with Kenneth J. Feeley
(09/24/2009) One of the most pressing issues in the conservation today is how climate change will affect tropical ecosystems. The short answer is: we don't know. Because of this, more and more scientists are looking at the probable impacts of a warmer world on the Earth's most vibrant and biodiverse ecosystems. Kenneth J. Feeley, tropical ecologist and new professor at Florida International University and the Center for Tropical Plant Conservation at the Fairchild Tropical Botanic Garden, is conducting groundbreaking research in the tropical forests of Peru on the migration of tree species due to climate change.
'Greening' logging concessions could help save great apes
(09/17/2009) Promoting reduced impact logging in forest areas already under concession could help protect populations of endangered great apes, argues a new report published by WWF.
Crowned sifaka population on the verge of local extinction: dispatch from the field
(09/08/2009) A small group of crowned sifaka lemurs Propithecus coronatus have been located in the corridor d’Amboloando-Dabolava, Miandrivazo district-Madagascar, but are immediately threatened with local extinction. The small, fragmented, and isolated forest shelters a group of only six adults and one baby. Interviews with local people revealed that once several groups of the species resided in the corridor, and even last year, about 20 individuals were still found there. However, within one year, the population dropped from 20 to 6 individuals.
Saving one of the last tropical dry forests, an interview with Edwina von Gal
(06/29/2009) Often we hear about endangered species—animals or plants on the edge of extinction—however we rarely hear about endangered environments—entire ecosystems that may disappear from Earth due to humankind’s growing footprint. Tropical dry forests are just such an ecosystem: with only 2 percent of the world’s tropical dry forest remaining it is one of the world’s most endangered ecosystems. A newly established organization, the Azuero Earth Project, is working not only to preserve some of the world’s last tropical dry forest on the Azuero peninsula in Panama, but also to begin restoration projects hoping to aid both the forest’s viability and the local people. Edwina von Gal, a landscape designer, is one of the founders of the Azuero Earth Project, as well as president of the organization.
Revolutionary new theory overturns modern meteorology with claim that forests move rain
(04/01/2009) Two Russian scientists, Victor Gorshkov and Anastassia Makarieva of the St. Petersburg Nuclear Physics, have published a revolutionary theory that turns modern meteorology on its head, positing that forests—and their capacity for condensation—are actually the main driver of winds rather than temperature. While this model has widespread implications for numerous sciences, none of them are larger than the importance of conserving forests, which are shown to be crucial to 'pumping' precipitation from one place to another. The theory explains, among other mysteries, why deforestation around coastal regions tends to lead to drying in the interior.
Amazon scientists awarded 'Nobel Prize' of conservation
(02/01/2009) Thomas Lovejoy of the H. John Heinz III Center for Science, Economics and the Environment and William F. Laurance of the Smithsonian Tropical Research Institute (STRI) have been awarded one of ecology's most coveted prizes for their work to understand and conserve the Amazon rainforest. The €400,000 BBVA Foundation Frontiers of Knowledge Award in Ecology and Conservation Biology is given annually to "honor contributions which significantly advance the stock of knowledge in this area for reasons of their importance and originality."
How to make forest fragments more hospitable to wildlife
(01/27/2009) While deforestation garners more attention from environmentalists, fragmentation of forest habitats is of significant concern to ecologists. As forest is fragmented into islands by logging, roads, agriculture, and other disturbances, edge effects alter the structure, microclimate and species composition of the forest patches, usually reducing the overall number of species. Forest specialists are most likely to suffer, losing out to "weedier" generalists and species that can tolerate forest "edge" conditions. A new study, conducted in the Brazilian Amazon, takes a detailed look at the types of birds that are likely to persist, and even thrive, in forest fragments.
Selective logging occurs in 28 percent of world’s rainforests
(01/13/2009) New satellite research presented for the first time at a symposium entitled “Will the rainforests survive?” showed that selective logging is impacting over a quarter of the world’s rainforests. Gregory Asner from the Carnegie Institution presented the “first true global estimate of selective logging” which showed that 5.5 million square kilometers of the rainforest has already seen selective logging or is slated to be logged in the near future.
Forest corridors key to maintaining biodiversity in fragmented landscape
(10/07/2008) Alta Floresta, a region in the Brazilian Amazon state of Mato Grosso, has experienced one of the highest deforestation rates on the planet since the mid-1980s due to the influx of colonists and ranchers who converted nearly half the region's forest land to pasture and agricultural plots. The change has had significant ecological impacts, including reducing the availability of water, increasing the incidence of forest fires, fragmenting remaining forest cover, and diminishing the quality of habitat for wildlife.
Island biogeography theory doesn't explain biodiversity changes in forest fragments
(07/28/2008) Island biogeography theory, the idea that fragmented ecosystems have lower species richness per unit of area compared with contiguous habitats, has served as a useful conceptual model to understand the effects of habitat fragmentation but fails to explain the complexities of change in isolated forest fragments, according to a synthesis published last month in the journal Biological Conservation.
Markets could save forests: An interview with Dr. Tom Lovejoy
(03/20/2008) Market mechanisms are increasingly seen as a way to address environmental problems, including tropical deforestation. In particular, compensation for ecosystem services like carbon sequestration — a concept known by the acronym REDD for "reducing emissions from deforestation and degradation" — may someday make conservation a profitable enterprise in which carbon traders are effectively saving rainforests simply by their pursuit of profit. Protecting rainforests and their resident biodiversity would be an unintentional, but happy byproduct of profit-seeking endeavors.
Fragmentation puts Mexican howlers at risk
(03/03/2008) Forest fragmentation is putting mantled howler monkeys in southern Mexico at risk, reports a new study, published in the inaugural issue of the open access e-journal Tropical conservation Science.
Rainforest fragmentation affects reptiles and amphibians
(02/20/2008) Deforestation of tropical ecosystems is one of the major threats to biological diversity. Anthropogenic activities transform tropical environments into semi-natural landscapes generating a great amount of forest edge that limits with pastures and agricultural lands.
Amazon riparian zones need to be expanded to protect wildlife finds study
(02/19/2008) Strips of forest mandated by Brazilian law along rivers and streams in the Amazon rainforest are too narrow to effectively safeguard biodiversity, reports new research published in the journal conservation Biology.
Parasites a key to the decline of red colobus monkeys in forest fragments
(10/25/2007) Forest fragmentation threatens biodiversity, often causing declines or local extinctions in a majority of species while enhancing the prospects of a few. A new study from the University of Illinois shows that parasites can play a pivotal role in the decline of species in fragmented forests. This is the first study to look at how forest fragmentation increases the burden of infectious parasites on animals already stressed by disturbances to their habitat.
Experts: parks effectively protect rainforest in Peru
(08/09/2007) High-resolution satellite monitoring of the Amazon rainforest in Peru shows that land-use and conservation policies have had a measurable impact on deforestation rates. The research is published in the August 9, 2007, on-line edition of Science Express.
Sedentary, not migratory birds, face higher extinction risk
(06/24/2007) Sedentary birds face considerably higher risk of extinction than migratory birds, reports a new paper published in the journal Current Biology. The findings have implications for the conservation of increasingly endangered wildlife populations.
Logging roads rapidly expanding in Congo rainforest
(06/07/2007) Logging roads are rapidly expanding in the Congo rainforest, report researchers who have constructed the first satellite-based maps of road construction in Central Africa. The authors say the work will help conservation agencies, governments, and scientists better understand how the expansion of logging is impacting the forest, its inhabitants, and global climate.
Congo forest elephants declining from logging roads, illegal ivory
(04/02/2007) Fast-expanding logging roads in the Congo basin are becoming 'highways of death' for the fierce but elusive forest elephant, according to a new study published in the journal Public Library of Science. Logging roads both provide access to remote forest areas for ivory poachers and serve as conduits of advancing human settlement.
Extinction risk accelerated when interacting human threats interact
(02/07/2007) A new study warns that the simultaneous effect of habitat fragmentation, overexploitation, and climate warming could increase the risk of a species' extinction.
Fragmentation killing species in the Amazon rainforest
(11/27/2006) Forest fragmentation is rapidly eroding biodiversity in the Amazon rainforest and could worsen global warming according to research to be published this week in the journal Proceedings of the National Academy of Sciences. "Rainforest trees can live for centuries, even millennia, so none of us expected things to change too fast. But in just two decades-a wink of time for a thousand year-old tree-the ecosystem has been seriously degraded." said Dr. William Laurance, a scientist at the Smithsonian Tropical Research Institute in Panama and leader of the international team of scientists that conducted the research.
Rainforests face myriad of threats says leading Amazon scholar
(10/17/2006) The world's tropical rainforests are in trouble. Spurred by a global commodity boom and continuing poverty in some of the world's poorest regions, deforestation rates have increased since the close of the 1990s. The usual threats to forests -- agricultural conversion, wildlife poaching, uncontrolled logging, and road construction -- could soon be rivaled, and even exceeded, by climate change and rising levels of carbon dioxide in the atmosphere. Understanding these threats is key to preserving forests and their ecological services for current and future generations. William F. Laurance, a distinguished scholar and president of the Association for Tropical Biology and conservation (ATBC) -- the world's largest scientific organization dedicated to the study and conservation of tropical ecosystems, is at the forefront of this effort.
Does tropical biodiversity increase during global warming?
(03/30/2006) Forest fragmentation may cause biodiversity loss lasting millions of years according to a new study published in the March 31, 2006 issue of the journal Science. Using cores drilled through 5 kilometers of rock in eastern Colombia and western Venezuela, Carlos Jaramillo of the Smithsonian Tropical Research Institute (STRI) in Panama and a team of researchers derived a fossil pollen record for a 72 million-year period with samples ranging from 10 to 82 million years ago.
Amazon rainforest biodiversity due to biology not climate change says study
(12/05/2005) The biodiversity of the Amazon rainforest results from biological factors, not climate change as widely thought, says new research published in the journal Proceedings of the Royal Society B. Scientists have long argued that the species richness of tropical forests could be due to climate change-induced fragmentation, known as the "forest refuge: theory, and other external factors that caused geographic isolation. Now, researchers from University College London say that biological influences play a greater role in driving species evolution.
Pandas threatened by roads and forest fragmentation in China
(12/05/2005) China's endangered giant panda is threatened by the rapid expansion of the national highway network, which causing fragmentation of its natural habitat, according to Chinese state media.