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News articles on tcs
Mongabay.com news articles on tcs in blog format. Updated regularly.
Using palm hearts sustainably in Colombia
(12/12/2011) Long eaten by indigenous populations, palm hearts have also popular abroad, usually in fine dining establishments. However, palm hearts are cut-out of the inner core of various palm tree species, in some cases killing the tree. A new study published in mongabay.com's open access journal Tropical Conservation Society looks at the sustainability of palm heart extraction from the palm species Prestoea acuminata in the Colombian Andes. While harvesting from Prestoea acuminata does not kill the host tree, better management is needed to ensure the practice doesn't become unsustainable.
Locals key to saving primate-rich wetlands in Cote D'Ivoire
(12/12/2011) Saved from being converted into a vast palm oil plantation by PALM-CI in 2009, the Ehy Tanoé wetlands and forest in the Cote D'Ivoire (Ivory Coast) is home to three gravely endangered primates and as well as many other species. Since 2006, a pilot community management program has been working to protect the 12,000 hectare area, and a new study in mongabay.com's open access journal Tropical Conservation Science finds that long-term conservation of the Ehy Tanoé wetlands and forest is, in fact, vital for locals who depend on the area for hunting, fishing, firewood, building materials, and medicinal plants. In addition, the study finds that the ecosystem has special cultural and spiritual importance to locals.
Madagascar tree diversity among the highest worldwide
(12/12/2011) In terms of biodiversity, the hugely imperiled forests of Madagascar may be among the world's richest. Researchers estimate that the island off the coast of Africa is home to at least 10,000 tree and shrub species with over 90 percent of them found no-where else in the world. With little baseline data collected on Madagascar's ecosystems, a new study, the first ever of tree diversity in Madagascar lowland rainforests, hopes to begin the process. Published in mongabay.com's open access journal Tropical Conservation Science, the new study surveyed tree species in eastern Madagascar's Betampona Special Reserve.
Bushmeat trade driving illegal hunting in Zimbabwe park
(12/12/2011) Bushmeat hunting is one of the major threats to mammals in sub-Saharan Africa. Although widely discussed and recognized as an issues in Central and West Africa, a new study in mongabay.com's open access journal Tropical Conservation Science describes a pattern of bushmeat hunting that is also occurring in southern Africa. Interviewing 114 locals living adjacent to Gonarezhou National Park in Zimbabwe, Edson Gandiwa with Wageningen University found that the primary drivers of illegal hunting in the park were bushmeat and personal consumption (68 percent).
Caatinga ecosystem almost wholly ignored in Brazil
(09/26/2011) Tropical dry forests have received little conservation and research attention as compared to their rainforest cousins, leaving these ecosystems to become gravely threatened while still largely unknown to the public and scientists. A new study in mongabay.com's open access journal finds that Caatinga, a seasonally dry tropical forest, is the least-known forest in Brazil.
Restoring tropical forests by keeping fire far away
(09/26/2011) Keeping fire at bay could be key to reforesting abandoned land in the tropics, according to a new study in mongabay.com's open access journal Tropical Conservation Science. Measuring the recovery of regenerating forests in Kibale National Park in Uganda, the study found that suppressing fire allowed the forest to come back over a period of decades. Given the role rainforests play in sequestering carbon and safeguarding biodiversity, the study argues that reforesting abandoned land in the tropics should be a global policy and controlling fire may be an simple and largely inexpensive method to achieve the goal.
Expanding ethanol threatens last remnants of Atlantic Forest
(09/26/2011) Aggressively expanding sugarcane ethanol is putting Brazil's nearly-vanished Atlantic Forest at risk, according to an opinion piece in mongabay.com's open-access journal Tropical Conservation Science. Already down to less than 12 percent of its original extent, the Atlantic Forest—home to over 7,000 species that survive no-where else—is facing a new peril from ethanol, used as an alternative to gasoline and often touted as 'green' or 'environmentally-sustainable'.
Primary forest best for birds in Papua New Guinea
(09/26/2011) A new survey recorded 125 birds in Papua New Guinea's Waria Valley, of which an astounding 43 percent were endemic to the island. The survey, published in mongabay.com's open-access journal Tropical Conservation Science, was the first of its kind for the rainforest-studded valley and found that bird populations were most diverse and abundant in primary forests. The bird surveys were carried out in four different habitats including primary forest, primary forest edges, secondary forest edges, and agricultural landscape.
REDD+ would leave some species unprotected
(09/26/2011) REDD+ programs could leave some species high and dry even if its preserves the forests they call home, argues a new opinion piece in mongabay.com's open access journal Tropical Conservation Science. While the program would likely help habitat-dependent species, other important species could still vanish without additional measures to stem threats such as overexploitation and disease. While REDD+, or Reduced Emissions from Deforestation and Degradation, has set preserving forests for their carbon value as its primary goal, the young program has been increasingly connected to efforts to conserve the world's biodiversity. However, the new paper, argues that conservationists must not become complacent.
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.
Could blockbuster animated movies help save life on Earth?
(09/26/2011) Some scientists may scoff at the idea that animated anthropomorphized animals—from Bambi to Simba to Nemo—could have an important impact on conservation efforts to save real-world species, but a new opinion piece in mongabay.com's open-access journal Tropical Conservation Science argues that conservationists would do well to join forces with the makers of animated blockbusters to help save the world's dwindling biodiversity. The paper points out that a number of recent films focused on imperiled places, such as coral reefs (Finding Nemo) and the Atlantic Forest (Rio), as well as conservation problems like overfishing (Happy Feet) and climate change (Ice Age: the Meltdown).
Repeated burning undercuts Amazon rainforest recovery
(09/26/2011) The Amazon rainforest can recover fromlogging, but has a far more difficult time returning after repeated burning, reports a new study in mongabay.com's open-access journal Tropical Conservation Science. In areas where the Amazon had been turned to pasture and was subject to repeated burning, Visima trees become the dominant tree inhibiting the return of a biodiverse forest. The key to the sudden domination of Visima trees, according to the study, is that these species re-sprout readily following fires; a capacity most other Amazonian trees lack.
How to monitor biodiversity for REDD projects
(09/26/2011) Although the international program Reduced Emissions from Deforestation and Degradation (REDD) was developed in order to lower greenhouse gas emissions by protecting standing forests, conservationists have long pointed out that another result from a well-crafted REDD program could be to conserve biodiversity. But one of the difficulties of including biodiversity is how to measure the success or failure of conservation in a REDD site. A new opinion piece in mongabay.com's open-access journal Tropical Conservation Science analyzes two effective ways to monitor biodiversity in REDD sites focusing on bats and big mammals.
Dam puts wild coffee species at risk of extinction
(09/26/2011) Coffee may be one of the world's most popular hot (and cold) drinks, however few coffee drinkers may know that there are dozens of different coffee species in the world and some are even endangered. Only discovered in 2004, Kihansi coffee (Coffea kihansiensis), makes its home in the Udzungwa Mountains of Tanzania. A new study in mongabay.com's open-access journal Tropical Conservation Science finds that the Kihansi coffee is nearing extinction due in part to a hydroelectric dam built upstream that has severely impacted the Kihansi River.
Ant surprises on Murciélago Islands in Costa Rica
(06/28/2011) The Murciélago Islands are seven small islands off the northwest coast of Costa Rica in the Area de Conservación Guanacaste (ACG), home to one of the largest intact dry tropical forests in Central America. Despite this, few scientists have studied the biodiversity of these small uninhabited islands. A new study in the open access journal Tropical Conservation Science has attempted to rectify this gap by conducting the first survey of insects, specifically ants, on the islands. Researchers were surprised at the richness of ant species on the island: 50 species were documented, only two of which were invasive species.
Best way to count white-tailed deer populations in tropical forests
(06/27/2011) Getting accurate estimates on wildlife populations is difficult in any habitat, but especially tricky in tropical forests where even large mammals are capable of melting into the foliage like ghosts. If you've ever spent time in a tropical rainforest, you know you could walk within a couple meters of a jaguar and never even know. Therefore, scientists have to come up with creative ways—from camera traps to pawprints to studying feces—to estimate population size. In the new issues of mongabay.com's open access journal Tropical Conservation Science, researchers look at the most accurate way to count white-tailed deer (Odocoileus virginianus) in central Mexican forests.
How do Lebombo ironwood trees fare against elephants and fire?
(06/27/2011) A new study in mongabay.com's open access journal Tropical Conservation Science found that Lebombo ironwood (Androstachys johnsonii) forests are showing signs of decline due to elephant damage and fires in Zimbabwe's Gonarezhou National Park. The Lebombo ironwood is the only tree in the genus Androstachys.
Over 80 percent of urban Congolese eat bushmeat
(06/27/2011) Bushmeat is one of the major threats to wildlife in parts of Africa: large and medium-sized animals are vanishing from regions in a trend dubbed by biologists the 'empty forest syndrome'. A number of popularly consumed species are also threatened with global extinction. A new study in mongabay.com's open access journal Tropical Conservation Science surveyed 1,050 households in Brazzaville, the capital of Republic of the Congo, regarding their consumption of bushmeat only to find that the practice was practically universal: 88.3 percent of households in Brazzaville consumed bushmeat.
Amazon still neglected by researchers
(03/28/2011) Although the Amazon is the world's largest tropical forest, it is not the most well known. Given the difficulty of access along with the fear of disease, dangerous species, indigenous groups, among other perceived perils, this great treasure chest of biology and ecology was practically ignored by scientists for centuries. Over the past few decades that trend has changed, however even today the Amazon remains lesser known than the much smaller, and more secure, tropical forests of Central America. A new study in mongabay.com's open access journal Tropical Conservation Science, which surveyed two prominent international tropical ecology journals (Biotropica and Journal of Tropical Ecology) between 1995 and 2008, finds that Central America was the subject of twice as many studies as the Amazon. In fact, according to the authors, much of the Amazon remains terra incognito to researchers, even as every year more of the rainforest is lost to human impacts.
What's behind the 85% decline of mammals in West Africa's parks?
(03/28/2011) A recent, well-covered study found that African mammals populations are in steep decline in the continent's protected areas. Large mammal populations over forty years have dropped by 59% on average in Africa [read an interview on the study here] and by 85% in west and central Africa, according to the study headed by Ian Craigie, which links the decline to continuing habitat degradation as well as hunting and human-wildlife conflict. However, a new opinion piece in mongabay.com's open access journal Tropical Conservation Science argues that this study missed an important factor in central and west Africa where the decline in mammals was the worst: rainfall.
Leaf harvesting impacts Amazon palm
(03/28/2011) Overexploitation of wildlife doesn't just threaten animals such as bluefin tuna, pangolins, and parrots, but plants as well. Leaves from the carana or puy palm (Lepidocaryum tenue) are used for thatching buildings in the northwestern Amazon, however a recent study in mongabay.com's open access journal Tropical Conservation Science finds that the overharvesting could imperil a palm's ability to survive.
New land snail invading Singapore requires swift action
(03/28/2011) An African land snail Limicolaria flammea has been discovered by researchers in six locations in Singapore, perhaps heralding a new invasion of alien land snails in Southeast Asia. Although snails may seem largely innocuous creatures, past invasions have resulted in agricultural and economic damage. The global invasion of the giant African land snail (Achatina fulica) has been called one of the world's top 100 worst alien species. Writing in mongabay.com's open access journal Tropical Conservation Science, researchers examine the issue and provide suggestions as to how Singapore authorities can quickly rid the nation of Limicolaria flammea.
Logged forests in Vietnam retain significant biodiversity, including dipterocarp trees
(03/28/2011) Little remains of Vietnam's primary forest: as of 2005 only 12% of Vietnam forest was classified as primary. While deforestation rates have lessened since the end of the 1990s, survival of species in Vietnam depends in part on secondary, logged, and degraded forests. A new study in mongabay.com's open access journal Tropical Conservation Science finds that logged forests in southern Vietnam still retain significant biodiversity of trees, including important conservation species, such as Dipterocarp trees.
Counting orangutans: the best way to survey the great apes
(03/28/2011) How do you count orangutans when they are difficult to spot in the wild given that they are shy, arboreal, and few and far between? To find a solution, biologists have turned to estimating orangutan populations by counting their nests, which the great apes make anew every night. In order to make the most accurate count possible, researchers have studied the different factors that could impact the success, or lack thereof, of nest-counters in mongabay.com's open access journal Tropical Conservation Science.
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'.
Biodiversity and slash-and-burn agriculture in Papua New Guinea
(12/20/2010) As pressures increase on the rich forests of Papua New Guinea, how will biodiversity fare? A new study in mongabay.com's Tropical Conservation Science attempts to answer this question by looking at how bird species are impacted by slash-and-burn agriculture. While locals have been practicing such agriculture for 5,000 years, rising populations and societal changes are expected to increase the pressure of slash-and-burn agriculture on forests and the species that live there.
Lack of price premium for certified palm oil endangers sustainability initiative
(12/19/2010) The palm oil industry's sustainability initiative is making considerable progress toward improving its environmental performance, but needs to do more to accelerate the adoption of responsible practices, argue researchers writing in mongabay.com's open access journal Tropical Conservation Science.
Using water bodies to track Asian elephants
(12/19/2010) One would think that it would be easy to track Asia's largest land animal, but in fact Asian elephants (Elephas maximus) are generally shy, mostly nocturnal, and stick to the forest whenever possible. Yet, it's vital for conservationists to track the herd, if they are to keep them safe from poaching and protect both elephants and locals from potential conflict. However, a new study in mongabay.com's open access journal Tropical Conservation Science has developed a unique strategy to track elephant herds in Sri Lanka by sticking to the water.
The hair-snare: non-invasive animal research technique makes good in Mexico
(12/19/2010) It's not easy or cheap to catch an elusive wild cat, and trapping such an animal can prove harmful to the individual. With such factors in mind, researchers are consistently turning to non-invasive methods of gathering data about species, including collecting feces and the increasingly popular camera trap. But one method rarely gets mentioned: the humble hair-snare. A new study in mongabay.com's open access journal Tropical Conservation Science has demonstrated the success of hair-snare in gathering data about mammals in Mexico, including the first successful hair catch of two rarely seen cat species, the jaguarundi (Puma yagouaroundi) and the margay (Leopardus wiedii).
Climate change could cut premontane forests of Argentina and Bolivia in half
(12/19/2010) A new study in mongabay.com's open access journal Tropical Conservation Science finds that the premontane forests of Argentina and Bolivia are susceptible to large-scale shifts due to climate change, losing over half of the ecosystem to warmer temperatures. Apart of the Yungas tropical forests, premontane forests are the lowest in the Andes, covering hills and flatland; these forests harbor significant biodiversity, yet many of those species may become threatened as the world warms.
Local rules trump regulations imposed by outsiders in Madagascar
(12/19/2010) Unwritten rules and social norms can be an effective means to manage protected areas in rural parts of Madagascar, reports a new study published in mongabay.com's open access journal Tropical Conservation Science.
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: researchers uncover top priority areas for Bolivian primates
(06/28/2010) Employing a predictive model, researchers have located two areas in need of protection to ensure the survival of Bolivia's primate species. The study, published in Tropical Conservation Science, identified the potential distribution of Bolivia's 22 primates and discovered two priority regions, one in the Pando Department with a number of rare primates, and the other in Western Beni, home to two primate species that live no-where else.
Eco-label for rainforest products could boost sustainability
(12/06/2009) Tropical forests around the world continue to fall, largely the result of logging and conversion to agriculture. But new hope for forests has emerged under a scheme that would reward countries for reducing greenhouse gas emissions from deforestation and degradation. Some variations of the concept, which is known as REDD, would allow for "sustainable forest management" (SFM), that is, reduced impact logging of forests, as well as harvesting of non-wood forest products (NWFPs) like seeds, fruit, and game. But the extent to which this harvesting affects forest ecology, and therefore carbon sequestration, is still poorly understood.
Forests recover faster from slash-and-burn when near intact forest reserves
(12/06/2009) Areas cleared for slash-and-burn agriculture recover faster when adjacent to a large block of untouched forest, but may take decades to regain a majority of their biodiversity after tree-felling, according to a new review of ecological studies, published in the December issue of Tropical Conservation Science, an open access journal.
How tree communities respond to distance to edges and canopy openness
(12/06/2009) Tropical forests frequently experience the opening and closing of canopy gaps as part of their natural dynamics. When an edge is created, and the area outside the boundary is a disturbed or unnatural system, forests can be seriously affected even at some distance from the fragmented edge, since sunlight and wind penetrate to a much greater extent. This increases tree mortality and, consequently, canopy openness close to the edge. Thus, canopy openness can be both part of a natural gap-dynamics cycle and the direct manifestation of human edge effects.
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.
Commercial fish smoking is the "most pervasive" threat to mangrove forests in West Africa
(12/06/2009) An improved system for commercial fish smoking could reduce destruction of mangrove forests and generate human health benefits, report researchers writing in Tropical Conservation Science, an open-access journal published by mongabay.com.
Farmers have poor understanding of role of wildlife in protecting crops
(08/10/2009) Environmental conservation depends, to a large degree, on public acceptance. Understanding people’s opinions on ecosystems and wildlife can be very helpful in designing programs that aim to benefit both the environment and society. A new study, published in Tropical Conservation Science, interviewed organic shade-coffee farmers in Cuetzalan, Mexico, to understand how they perceive the wild animals that live in their fields, as well as their knowledge of the ecological roles these species play in maintaining ecosystem services.
Golden lion tamarins play key role in seed dispersal in Brazil's Mata Atlantica
(08/10/2009) Golden lion tamarins play an important role in seed dispersal in Brazil's Mata Atlantica, report researchers writing in the the journal Tropical Conservation Science.
Priorities in global bird conservation 'misplaced'
(08/10/2009) Bird conservation is misplacing its priorities by focusing on non-threatened bird species in developed countries, rather than threatened species from tropical nations, report researchers writing in Tropical Conservation Science.
Better species distribution modeling needed for the tropics
(08/10/2009) In order to conserve the world's biodiversity we need to know where species are found. We also need to predict where they might be found if the climate changes or human activity alters habitats. One way of gaining such knowledge is through field studies. Such work on the ground produces lists of species and adds to museum collections. However many tropical areas have not yet been visited by scientists. Even the most detailed studies from the best known areas of the tropics are far from exhaustive. This means that accurate distribution maps are not available for many tropical species. In order to address the problem increasingly sophisticated computer models have been designed that aim to predict where species might occur based on current knowledge. These models can often add a great deal of value to the limited information available. However, models are only as good as the data from which they are built.
Despite legal protection, Indian turtles are poached for restaurant trade
(08/10/2009) Despite being accorded the highest level of protection under Indian law, soft shell turtles are regularly trafficked in Kerala for the restaurant trade, report researchers writing in in the journal Tropical Conservation Science.
Earthworm diversity in Vietnam
(08/10/2009) Central Vietnam is a region that suffers from hostile climate (drought, flooding) and sandy soils that are low in fertility. As a consequence of these conditions, the regions is less favored for agricultural development than the Mekong River Delta. Soils fertility is a function of the quantity and quality of organic matter transformed by soil organisms, like earthworms, which are commonly viewed as bio-indicators of soils fertility.
Conservation of Mexico's ungulate species explored
(05/25/2009) Nearly one third of the New World's 32 species of ungulates are found in Mexico, which serves as an important biological transition zone between temperate North America and tropical Central and South America. While few of these species are at risk of extinction, their ecological and economic importance makes them a significant conservation concern. As such, a special issue of Tropical Conservation Science, mongabay.com's open access journal, takes a closer look at Mexico's ungulates.
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