Region: Central & South America


Digital Defenders: Tribal People<br /> Use GPS to Protect Their Lands

Report

Digital Defenders: Tribal People
Use GPS to Protect Their Lands

by fred pearce
From the rainforests of central Africa to the Australian outback, indigenous people armed with GPS devices are surveying their territories and producing maps they can use to protect them from logging and other outside development.
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In Fight to Save Coral Reefs,<br /> Finding Strategies that Work

Interview

In Fight to Save Coral Reefs,
Finding Strategies that Work

by kevin dennehy
In four decades as a marine biologist, Nancy Knowlton has played a key role in documenting the biodiversity of coral reefs and the threats they increasingly face. In an interview with Yale Environment 360, she assesses the state of the world’s corals and highlights conservation projects that offer hope of saving these irreplaceable ecosystems.
READ MORE

On the Road Back to Rio,<br /> Green Direction Has Been Lost

Opinion

On the Road Back to Rio,
Green Direction Has Been Lost

by fred pearce
Twenty years ago, an historic environmental summit in Rio de Janeiro produced groundbreaking treaties and high hopes that pressing issues would be addressed. But as organizers prepare for the Rio+20 conference in June, there is little on the agenda to suggest any substantive action will be taken.
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As Roads Spread in Rainforests,<br /> The Environmental Toll Grows

Opinion

As Roads Spread in Rainforests,
The Environmental Toll Grows

by william laurance
From Brazil to Borneo, new roads are being built into tropical forests at a dizzying pace, putting previously intact wilderness at risk. If we hope to preserve rainforests, a leading researcher says, new strategies must be adopted to limit the number of roads and reduce their impacts.
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A Defender of World’s Whales<br /> Sees Only a Tenuous Recovery

Interview

A Defender of World’s Whales
Sees Only a Tenuous Recovery

by christina m. russo
Biologist Roger Payne played a key role in helping end the wholesale slaughter of whales. In an interview with Yale Environment 360, Payne discusses the mysteries of these legendary marine mammals and the threats they continue to face.
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A Rise in Fungal Diseases is<br /> Taking Growing Toll on Wildlife

Report

A Rise in Fungal Diseases is
Taking Growing Toll on Wildlife

by michelle nijhuis
In an increasingly interconnected world, fungal diseases are spreading at an alarming rate and have led to deadly outbreaks in amphibian, bat, and bee populations. And in the last decade, researchers note, some of the most virulent strains have infected people.
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A Revolutionary Technology is<br /> Unlocking Secrets of the Forest

Report

A Revolutionary Technology is
Unlocking Secrets of the Forest

by rhett butler
A new imaging system that uses a suite of airborne sensors is capable of providing detailed, three-dimensional pictures of tropical forests — including the species they contain and the amount of CO2 they store — at astonishing speed. These advances could play a key role in preserving the world’s beleaguered rainforests.
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In Brazil, Palm Oil Plantations<br /> Could Help Preserve the Amazon

Analysis

In Brazil, Palm Oil Plantations
Could Help Preserve the Amazon

by rhett butler
In recent years, palm oil development in Malaysia and Indonesia has devastated tropical forests there. With Brazil on the verge of its own palm oil boom, can sustainable cultivation of the crop actually help save the rainforest, rather than hastening its destruction?
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The World’s Tropical Forests<br /> Are Already Feeling the Heat

Analysis

The World’s Tropical Forests
Are Already Feeling the Heat

by william laurance
Much attention has been paid to how global warming is affecting the world’s polar regions and glaciers. But a leading authority on tropical forests warns that rising temperatures could have an equally profound impact on rainforests and are already taking a toll on some tropical species.
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The Cerrado: Brazil’s Other<br /> Biodiverse Region Loses Ground

Report

The Cerrado: Brazil’s Other
Biodiverse Region Loses Ground

by fred pearce
While Brazil touts its efforts to slow destruction of the Amazon, another biodiverse region of the country is being cleared for large-scale farming. But unlike the heralded rainforest it borders, the loss of the cerrado and its rich tropical savanna so far has failed to attract much notice.
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A Scientist Extols the Value<br /> Of Forests Shaped by Humans

Interview

A Scientist Extols the Value
Of Forests Shaped by Humans

by john carey
Political ecologist Susanna Hecht has incurred the wrath of some conservationists by arguing that the notion of the primeval forest is largely a myth and that disturbed forests play a vital ecological function. In an interview with Yale Environment 360, she makes the case for a “new rurality” that places less emphasis on protected forests and more on the areas where people live.
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Threat of Mercury Poisoning<br /> Rises With Gold Mining Boom

Report

Threat of Mercury Poisoning
Rises With Gold Mining Boom

by shefa siegel
With high gold prices fueling a global gold rush, millions of people in the developing world are turning to small-scale gold mining. In many countries, including Colombia, miners are putting themselves and those who live nearby at risk by using highly toxic mercury in the refining process.
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Did Cancun Prove the UN<br /> Irrelevant in Tackling Climate?

Opinion

Did Cancun Prove the UN
Irrelevant in Tackling Climate?

by fred pearce
The Cancun conference is being credited with keeping international climate talks alive. But the real potential for bringing emissions under control may lie in a Plan B, with nations acting on their own in moving toward a low-carbon economy.
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Deep in Ecuador’s Rainforest,<br /> A Plan to Forego an Oil Bonanza

Report

Deep in Ecuador’s Rainforest,
A Plan to Forego an Oil Bonanza

by kelly hearn
Ecuador's Yasuni National Park is one of the most biodiverse places on Earth and is home to remote Indian tribes. It also sits atop a billion barrels of oil. Now, Ecuador and the United Nations are forging an ambitious plan to walk away from drilling in the park in exchange for payments from the international community.
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Spurred by Warming World,<br /> Beetles Threaten Coffee Crops

Report

Spurred by Warming World,
Beetles Threaten Coffee Crops

by erica westly
Coffee production has long been vulnerable to drought or excess rains. But recently, a tiny insect that thrives in warmer temperatures — the coffee berry borer — has been spreading steadily, devastating coffee plants in Africa, Latin America, and around the world.
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In the Fight to Save Forests,<br /> Activists Target Corporations

Analysis

In the Fight to Save Forests,
Activists Target Corporations

by rhett butler
Large corporations, not small-scale farmers, are now the major forces behind the destruction of the world’s tropical forests. From the Amazon to Madagascar, activists have been directing their actions at these companies — so far with limited success.
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Will REDD Preserve Forests <br />Or Merely Provide a Fig Leaf?

Analysis

Will REDD Preserve Forests
Or Merely Provide a Fig Leaf?

by fred pearce
The tropical forest conservation plan, known as REDD, has the potential to significantly reduce deforestation and carbon dioxide emissions worldwide. But unless projects are carefully designed and monitored, the program could be undercut by shady dealings at all levels, from the forests to global carbon markets.
READ MORE

Coping With Climate Change:<br /> Which Societies Will Do Best?

Opinion

Coping With Climate Change:
Which Societies Will Do Best?

by gaia vince
As the world warms, how different societies fare in dealing with rising seas and changing weather patterns will have as much to do with political, social, and economic factors as with a changing climate.
READ MORE

Controlling the Ranching Boom<br /> that  Threatens the Amazon

Report

Controlling the Ranching Boom
that Threatens the Amazon

by rhett butler
Clearing land for cattle is responsible for 80 percent of rainforest loss in the Brazilian Amazon. But with Amazon ranching now a multi-billion dollar business, corporate buyers of beef and leather, including Wal-Mart, are starting to demand that the destruction of the forest be halted.
READ MORE

Hailed as a Miracle Biofuel,<br /> Jatropha Falls Short of Hype

Report

Hailed as a Miracle Biofuel,
Jatropha Falls Short of Hype

by jon r. luoma
The scrubby jatropha tree has been touted as a wonder biofuel with unlimited potential. But questions are now emerging as to whether widespread jatropha cultivation is really feasible or whether it will simply displace badly-needed food crops in the developing world.
READ MORE

Retreat of Andean Glaciers<br /> Foretells Global Water Woes

Report

Retreat of Andean Glaciers
Foretells Global Water Woes

by carolyn kormann
Bolivia accounts for a tiny fraction of global greenhouse gas emissions. But it will soon be paying a disproportionately high price for a major consequence of global warming: the rapid loss of glaciers and a subsequent decline in vital water supplies.
READ MORE

As Rain Forests Disappear,<br /> A Market Solution Emerges

Report

As Rain Forests Disappear,
A Market Solution Emerges

by rhett butler
Despite the creation of protected areas in the Amazon and other tropical regions, rain forests worldwide are still being destroyed for a simple reason: They are worth more cut down than standing. But with deforestation now a leading driver of global warming, a movement is growing to pay nations and local people to keep their rain forests intact.
READ MORE

Opinion

Has the Population Bomb Been Defused?

by fred pearce
Paul Ehrlich still believes that overpopulation imperils the Earth’s future. But the good news is we are approaching a demographic turning point: Birth rates have been falling dramatically, and population is expected to peak later this century — after that, for the first time in modern history, the world's population should actually start to decline.
READ MORE

Global Commodities Boom <br />Fuels New Assault on Amazon

Report

Global Commodities Boom
Fuels New Assault on Amazon

by rhett butler
With soaring prices for agricultural goods and new demand for biofuels, the clearing of the world's largest rain forest has accelerated dramatically. Unless forceful measures are taken, half of the Brazilian Amazon could be cut, burned or dried out within 20 years.
READ MORE

Opinion

The Ethics of Climate Change

by richard c. j. somerville
When it comes to setting climate change policy, science can only tell us so much. Ultimately, a lead report author for the Intergovernmental Panel on Climate Change writes, it comes down to making judgments about what is fair, equitable, and just.
READ MORE

DNA Technology: <br />Discovering New Species

Report

DNA Technology:
Discovering New Species

by jon r. luoma
By taking bits of a single gene, scientists are using DNA barcoding to identify new species. If a portable hand-held scanning device can be developed, one ecologist says, it could “do for biodiversity what the printing press did for literacy.”
READ MORE

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15 May 2012: U.S. Companies Use Steel Linked
To Amazon Destruction, Greenpeace Finds

U.S. car makers such as General Motors, Ford, and Nissan are purchasing steel made from pig iron that is smelted using large amounts of illegally logged timber from the Amazon rainforest, according to a two-year investigation by Greenpeace. The environmental group also said that the pig iron smelting, fueled by charcoal produced from tropical forest trees, has resulted in virtual slave labor and illegal logging of indigenous lands in northeastern Brazil. The Greenpeace investigation said that Brazil’s Carajas region — where three-quarters of the forests have been cleared, mainly for charcoal production — is home to 43 blast furnaces used by 18 different companies. Two of the major companies, Viena and Sidepar, sell pig iron to a U.S. steel mill operated by Severstal, Greenpeace said. That mill sells steel to General Motors, Nissan, BMW, and Mercedes, according to Greenpeace. As illegal charcoal operations have decimated the forests in Carajas, loggers have entered conservation areas belonging to indigenous tribes, who have lost 30 percent of their lands to illegal loggers, Greenpeace said.
PERMALINK

 

14 May 2012: Various Uses of Wood
Determine Emissions from Deforestation

The volume of greenhouse gases released when a forest is cleared depends on how how the trees are used and in which part of the world the trees are grown, according to a study by researchers at the University of California, Davis. Analyzing how 160 countries use wood from cleared forests, the researchers found that if the wood is generally used to create solid wood products, such as timber for housing, up to 62 percent of the carbon in the trees remains in storage. Temperate forests in the U.S., Canada, and Europe are cleared primarily for use in such products. But the study found that wood from tropical forests in places like Brazil and Indonesia is generally used in paper, pulp, and bioenergy production, and such uses lead to an almost complete release of the carbon stored in trees. Reporting in the journal Nature Climate Change, the researchers said that early studies assumed that most of the carbon stored in trees was released once they were felled. The new study, however, gives a more nuanced picture of carbon releases from deforestation.
PERMALINK

 

11 May 2012: Study Calls Selective Logging
Most Realistic Conservation Strategy

A new study says that well-managed selective logging may be the only realistic solution to conserving tropical forests in the face of a rapacious global demand for timber resources. In an analysis of more than 100 studies, researchers at the University of Florida found that while even selective logging has a significant impact on biodiversity in tropical forests and carbon storage capacity, those impacts are “survivable and reversible to a degree” if the forests are given time to recover. In fact, the researchers found that, on average, 85 to 100 percent of animal and plant species present before initial logging were still around after selective logging and that forests retained about 75 percent of their carbon after initial harvest. By contrast, the researchers say, forest loss for the planting of rubber or palm oil plantations is permanent. “We’re not advocates for logging,” said Jack Putz, a professor of biology and lead author of the study published in Conservation Letters. “We’re just acknowledging that it is a reality — and that within that reality, there is a way forward.”
PERMALINK

 

19 Apr 2012: 151 Planned Dams Threatens
Balance of Andean Amazon, Study Says

A new study warns that 151 hydroelectric dams planned along six major rivers in the Amazon basin over the next two decades, including dozens of so-called mega-dams, could significantly disrupt the region’s ecological connectivity. Writing in the online journal PLoS ONE, researchers say 60 percent of the dams currently being planned would cause the first major break in river connectivity between the Andean headwaters and the lowland Amazon, possibly threatening the free flow of several Andean-Amazon rivers. The Andes provide most of the sediment, nutrients, and organic matter to the vast, species-rich Amazonian floodplain. The study also found the majority of the projects would increase forest loss because of new roads and transmission lines. “There appears to be no strategic planning regarding possible consequences to the disruption of an ecological connection that has existed for millions of years,” said Matt Finer of the Center for International Environmental Law and the study's lead author.
PERMALINK

 

28 Mar 2012: Brazil Policies Helped Drive
Decline in Deforestation, Report Says

Brazilian conservation policies were responsible for about half of the 70 percent decline in deforestation within the Amazon rainforest from 2005 to 2009, according to a new study. In an analysis conducted by the Climate Policy Initiative (CPI), researchers found that a series of government policies — including stricter monitoring and enforcement of land use laws, the expansion of protected areas, and stronger incentives for local governments to meet environmental standards — helped prevent the clearing of nearly 24,000 square miles (62,000 square kilometers) of forest and avoided 620 million tons of carbon emissions that would have otherwise occurred during that period, Mongabay reports. Those policies — which included the creation of blacklists for municipalities with high deforestation rates — were enacted following a spike in deforestation in 2004, when a record 10,425 square miles were cleared. The study found that falling agricultural prices also slowed deforestation rates.
PERMALINK

 

23 Mar 2012: Google Street View Offers
Virtual Tour of Amazon Basin

Google this week expanded its popular Street View feature to the forests of the Amazon basin, posting more than 50,000 photos that allow online users a virtual tour of the world’s largest tropical region. The photos, taken last summer in the Rio Negro Reserve, provide a panoramic view of tropical forest trails and village pathways — and a “virtual board ride” down the Rio Negro. Like many areas of the Amazon, the Rio Negro Reserve is under strict government control and has restricted access to the public, Amazon project leader Karin Tuxen-Bettman wrote on the Google blog. “We’re thrilled to help everyone from researchers and scientists to armchair explorers around the world learn more about the Amazon, and better understand how local communities there are working to preserve this unique environment for future generations,” she wrote. The project is part of a Google partnership with the Amazonas Sustainable Foundation.
PERMALINK

 

Interview: Finding Strategies
To Save World’s Coral Reefs

In her four decades as a marine biologist, Nancy Knowlton has played an important role in helping document the biodiversity of the planet’s coral reefs — and the threats they increasingly face. Knowlton, a
Nancy Knowlton
Christian Ziegler/Smithsonian
Nancy Knowlton
scientist at the Smithsonian Institution, has been elated by the rapid pace of discoveries but also  alarmed by the perils facing coral reefs, including overfishing, disease, and climate change. In an interview with Yale Environment 360, Knowlton assesses the state of the world’s corals and discusses conservation projects that offer hope of saving these irreplaceable marine ecosystems — success stories that she has highlighted in a series of events called “Beyond the Obituaries: Success Stories in Ocean Conservation.” “I felt it was really important to give people a reason to think that there is something you can do,” Knowlton says. “We all need more than doom and gloom.”
Read the interview
PERMALINK

 

31 Jan 2012: Tropics Store More Carbon
Than Previously Believed, Study Says

A new analysis calculates that vegetation in the world’s tropical regions stores about 229 billion tons of carbon, which is about 21 percent more carbon than previously

Click to enlarge
Woods Hole Tropics Carbon Storage Map

Woods Hole Research Center
Biomass in the Democratic Republic of the Congo
believed. Using remote sensing satellite data — including cloud-penetrating LiDAR — and field observations from forests, woodlands and savannas across Africa, Asia, and South America, researchers say they were able to create the first “wall-to-wall” map depicting carbon density. According to their results, Brazilian rainforests store about 53.2 billion tons of carbon, followed by the Democratic Republic of the Congo (22 billion) and Indonesia (18.6). “For the first time we were able to derive accurate estimates of carbon densities using satellite LiDAR observations in places that have never been measured,” said Alessandro Baccini of the Woods Hole Research Center the lead author of the study published in the journal Nature Climate Change. The results could help improve the accuracy of reporting carbon emissions as part of the UN-based REDD initiative, which provides incentives to developing nations to prevent large-scale deforestation.
PERMALINK

 

25 Jan 2012: South Pacific ‘Free-for-All’
Decimating Fish Stocks, Report Says

Years of lax oversight, corruption, and political rivalry have allowed industrial fishing fleets from Asia, Europe, and Latin America to decimate fish stocks across the southern Pacific, a “free-for-all” that has pushed one
Peru Fish Meal Factory
Getty Images
A Peruvian fishmeal factory
critical species to the brink, according to a new report by the International Consortium of Investigative Journalists (ICIJ). With governments ignoring the threat of overfishing and heavily subsidizing the fishing industry, fleets have plundered the waters off Chile and Peru and have fished heavily right up to protected Antarctic waters. Stocks of jack mackerel — an oily fish that is a staple in Africa and a vital component in fishmeal for aquaculture — have declined by more than 90 percent, from an estimated 30 million metric tons to less than 3 million metric tons, in just two decades. According to Daniel Pauly, an oceanographer at the University of British Columbia, the jack mackerel decline could portend a collapse in fisheries worldwide.
PERMALINK

 

10 Jan 2012: Brazil Gains in Food Production
Coincided With Drop in Deforestation

A new study of land use in the Brazilian state of Mato Grosso shows that deforestation rates decreased significantly from 2006 to 2010 even as agricultural production in the region reached an all-time high. The study found that growers in Mato Grosso, where more than a third of forest loss in the Brazilian Amazon occurred in the 1980s, have increasingly used previously cleared pasture land. Using satellite data and government statistics on deforestation and production, researchers from Columbia University calculated that 26 percent of the increase in soy production within Mato Grosso from 2001 to 2005 was the result of cropland expansion into forested areas, accounting for 10 percent of total deforestation; during the second half of the decade, however, soy expansion accounted for just 2 percent of total deforestation. According to the study, published in the Proceedings of the National Academy of Sciences, this shift coincided with a drop in commodity markets, as well as a series of high-profile policy initiatives to reduce deforestation and improved methods in monitoring illegal clearing, including satellite-based tracking systems.
PERMALINK

 

19 Dec 2011: Brazil's Forest Code Will Lead
To Rise in Deforestation, Critics Say

Environmental advocates say a controversial overhaul of Brazil’s Forest Code will lead to an increase in illegal deforestation and send a mixed message about Brazil’s commitment to preserving its rainforests. While advocates of the legislation approved by the Senate last week say it will require property owners to preserve 80 percent of their forested land, opponents say loopholes will allow farmers to clear a significantly larger portion of forest and to replace as much as 50 percent of illegally cleared forest with exotic species rather than native trees. Nationwide, opponents predict, farmers will be required to restore only about half of the 212,000 square miles of forest they would have been required to restore under the current law. The changes come as Brazil pledges to reduce carbon emissions by nearly 40 percent below projected levels by 2020. “Brazil has positioned itself as a country that’s committed itself to saving the forest cover to the benefit of the world,” Christian Poirier, the Brazil director for Amazon Watch, told the Washington Post. “The new forest code flouts all that.” According to a pair of Russian scientists, similar revisions to Russia’s forest code in 2007 produced a spike in illegal deforestation.
PERMALINK

 

Interview: Defender of Whales
Sees Only a Tenuous Recovery

Biologist Roger Payne first came to prominence more than 40 years ago, when he and a colleague made the

View gallery
Whales Biologist Roger Payne

Iain Kerr/Ocean Alliance
A humpback whale breaches
discovery that whales sing eerily beautiful songs as a way of communicating. Since then, he has continued his groundbreaking work on whales, including recent studies showing that whales worldwide have high levels of pollutants in their bodies. In an interview with Yale Environment 360, Payne talks about current threats to whale populations, including the continued killing of whales by Japan and other nations, and discusses the mystery of the songs sung by whales, whose haunting strains have the power, he says, to move people to tears.
Read the interview
PERMALINK

 

06 Dec 2011: Deforestation in Brazil’s Amazon
Dropped to Record Low Last Year

Deforestation in the Brazilian Amazon dropped to a new record low during the year ending in July, according to preliminary government data. About 2,408 square miles (6,238 square kilometers) of rainforest were cleared from August 2010 to July 2011, a 10.9 percent reduction from the previous year, when about 2,700 square miles of forest were destroyed, an analysis of satellite data from Brazil’s National Institute for Space Research shows. While Brazilian leaders attributed the trend to stricter enforcement of logging rules and sustainable development initiatives, analysts said slow economic growth was also a factor. The results reflect the continuation of a trend of significantly declining deforestation in the Brazilian Amazon, where forest destruction peaked at about 9,650 square miles (25,000 square kilometers) annually in 2003 and 2004. The new findings come as Brazilian lawmakers prepare to vote on legislation that would ease the nation’s Forest Code, which requires property owners in the Amazon to maintain 80 percent of their holdings as forest.
PERMALINK

 

11 Nov 2011: Wood Smoke Is Linked To
Severe Pneumonia and Cognitive Impacts

A new study finds that reducing exposure to smoke from open fires and wood-burning cook stoves significantly reduces the incidence of pneumonia, the leading of death for children five and under in developing countries. In an assessment of families in the western highlands of Guatemala, researchers found a one-third reduction in severe pneumonia diagnoses among children in homes with smoke-reducing chimneys compared with homes that use dirtier, poorly ventilated stoves, which are the primary source of cooking and heat for 3 billion people, or 43 percent of the global population. “The amount of smoke exposure babies were getting from the open woodfire stoves is comparable to having them smoke three to five cigarettes a day,” said Kirk Smith, a researcher at the University of California, Berkeley and principal investigator of the study, published in the journal The Lancet. “The chimney stoves reduced that smoke exposure by a half, on average.”
PERMALINK

 

19 Oct 2011: Trawlers Kill 2,000 Sharks
For Fins in Colombian Marine Sanctuary

As many as 2,000 sharks have been slaughtered for their fins in the protected waters of Colombia’s Malpelo wildlife sanctuary, government officials say. A team of researchers studying sharks in the region reportedly witnessed a fleet of about 10 fishing trawlers in the waters around Malpelo, a rock island about 500 kilometers from the mainland. “When the divers dove, they started finding a large number of animals without their fins,” said Sandra Bessudo, environmental advisor to Colombian President Juan Manuel Santos. “They didn’t see any alive.” A Colombian navy ship later reported seizing an Ecuadorian fishing boat containing an illegal catch, including sharks and other species. The remote 8,570-square-kilometer sanctuary — which is home to hammerhead, Galápagos, and whale sharks — attracts illegal fishing boats that trap the sharks and strip their fins, before dropping them back into the water. In Hong Kong, where shark fin soup is considered a delicacy, 22 million pounds of shark fins are traded annually and a bowl of soup can fetch £63.
PERMALINK

 

11 Oct 2011: Rising Gold Prices Drive
Rampant Clearing of Peruvian Amazon

The spread of illegal gold mining in southern Peru has driven a growth in deforestation so rampant that government officials may declare an environmental emergency, according to a news report. As the global

Click to enlarge
Peru Gold Mining

Rhett Butler/Mongabay
Aerial view of Peru gold mine
price of gold has climbed, mining operations in the Amazon have extended into the fringes of Tambopata Nature Reserve, an important region for ecotourism, with miners beginning operations without necessary permits, according Mongabay.com. In some cases, miners have started operations within the reserve itself, using dredges and massive suction equipment to search for gold in rivers and creeks. Ecologists warn that enormous swaths of remote and biodiverse forest are being cleared before scientists have even been able to completely assess their value. “This [area] is often blanketed in clouds. It’s poorly known to science,” said ecologist Gregory Asner of the Carnegie Institution for Science at Stanford University. “We don’t know the composition of the ecosystems.”
PERMALINK

 

10 Oct 2011: Amazon Drought Released
More CO2 than India’s Annual Emissions

A drought that affected large areas of the Amazon rainforest in 2010 triggered the release of about 1.8 million tons of carbon dioxide, more than the total annual CO2 emissions of India, according to a new

Click to enlarge
Amazon Emissions

Environmental Research Letters
Decline in Amazonian forest net primary production, 2008-2010
study. After combining a NASA carbon cycle simulation model and satellite data that reflects the “greenness” — or light interception capacity — of forest canopies, researchers at the NASA Ames Research Center found that net primary production in some forest areas decreased by an average of 7 percent compared with 2008 data. The drought not only reduced the amount of CO2 absorbed by the rainforest, but the drying of normally flooded areas also released large amounts of CO2 through the decomposition of soil and dead wood. According to the study, published in the journal Environmental Research Letters, the results suggest “a more widespread and long-lasting impact to Amazonian forests than what could be inferred based solely on rainfall data.”
PERMALINK

 

26 Sep 2011: Major Rivers Have Enough Water
to Sustain Growing Populations, Study Says

A new study says the world’s major river systems contain more than enough water to meet global food production needs in the 21st century. Following a five-year study of 10 river basins — including the Nile, Ganges, Andes, Yellow, and Niger — scientists with the Consultative Group on International Agricultural Research (CGIAR) found that the greatest water challenge facing the planet is not scarcity but the inefficient and inequitable distribution of water. “Huge volumes of rainwater are lost or never used,” said Alain Vidal, director of CGIAR’s Challenge Program on Water and Food. In regions of sub-Saharan Africa, he said, even “modest” improvements in rainwater harvesting could yield two to three times more food production. Elsewhere, regions in Asia and Latin America exist where food production could be increased by at least 10 percent, according to the report, which is published in the journal Water International. According to a recent UN report, global food output will have to increase 70 percent by 2050 to feed a growing world population.
PERMALINK

 

30 Aug 2011: Deforestation Rates Higher
In ‘Protected’ Forests, Study Says

A new study says deforestation rates in tropical forests designated as “protected” areas are typically much higher than in community-managed forests. In a comparison of recent studies covering 40 protected areas and 33 community forests in 16 countries — including 11 in Latin America, three in Asia, and two in Africa — researchers found that protected areas lost an average of 1.47 percent of forest cover annually while community-managed forests lost only about 0.24 percent per year. “Our findings suggest that a forest put away behind a fence and designated ‘protected’ doesn’t necessarily guarantee that canopy cover will be maintained over the long term compared to forests managed by local communities,” said Manuel Guariguata, a senior scientist with the Center for International Forestry Research and co-author of the study, published in the journal Forest Ecology and Management. While the researchers do not contend that the designation of forest areas as protected is “useless,” they say the evidence suggests community-based efforts can lead to increased local participation, reduced poverty, and greater economic opportunities and are a key part of forest conservation efforts globally.
PERMALINK

 

29 Aug 2011: Preserving 4 Percent of Ocean
Would Benefit Most Marine Mammal Species

A new study says the preservation of just 4 percent of the world’s oceans would protect critical habitat for most of the world’s marine mammal species. After comparing maps of where each of the planet’s 129 marine mammal
NOAA
A humpback whale
species are found — and where conservation efforts would be most productive — scientists from Stanford University and the Universidad Nacional Autónoma de México identified 20 areas of “species richness” based on the number of species present, risks of extinction, and the presence of species unique to the area. According to their study, published in the Proceedings of the National Academy of Sciences, preserving just nine of those 20 conservation sites, which cover 4 percent of the world’s oceans, would protect habitat for 108 species, or 84 percent of the Earth’s marine mammal species. The sites are located off the coasts of Baja California in Mexico, eastern Canada, Peru, Argentina, northwestern Africa, South Africa, Japan, Australia, and New Zealand. At least 70 percent of those areas are significantly impacted by human activities, highlighting the urgency to enhance marine conservation efforts, the authors said.
PERMALINK

 

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e360 VIDEO REPORT

Leveling Appalachia
Leveling Appalachia: The Legacy of Mountaintop Removal Mining, an e360 video examining the environmental and human impacts of this mining practice, won the award for best video in the 2010 National Magazine Awards for Digital Media. Watch the video.

 

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