rivers news from mongabay.com

Mystery of Amazon River carbon emissions solved

2013-05-21T23:01:00Z

Bacteria living in the Amazon River digest nearly all wood plant matter that enters the river before it reaches the Atlantic Ocean, triggering the release of carbon locked up in the vegetation instead of sequestering it in the deep ocean, finds a new study published in Nature Geoscience. The research explains the mechanism by which the world's largest river 'exhales' large amounts of CO2.

China approves another mega-dam that will imperil endangered species

2013-05-21T15:59:00Z

Chinese environmental authorities have approved construction plans for what could become the world's tallest dam, while acknowledging that the project would affect endangered plants and rare fish species.

Amazon's flood/drought cycle becoming more extreme, less predictable

2013-05-14T17:04:00Z

The Amazon River's hydrological cycle has become more extreme over the past two decades with increasing seasonal precipitation across much of the basin despite drier conditions in the southern parts of Earth's largest rainforest, finds a new study published in Geophysical Research Letters. The research analyzed monthly Amazon River discharge at Óbidos, a point that drains 77 percent of the Amazon Basin, and compared it with regional precipitation patterns.

Rainforest tribe urges Norwegian king to recall energy executive

2013-05-13T23:30:00Z

In an unusual bid to stop a series of dams that will flood their rainforest home, a group of tribesmen in Borneo are urging King Harald V of Norway to call one of his subjects home. The subject is Torstein Dale Sjøtveit, a Norwegian citizen who is the CEO of Sarawak Energy, a Malaysian firm that is building several dams in the state of Sarawak. The hydroelectric projects are controversial because they require the forced displacement of indigenous communities and will flood large tracts of rainforest.

Deforestation will undercut effectiveness of rainforest dams

2013-05-13T19:16:00Z

Deforestation may significantly decrease the hydroelectric potential of tropical rainforest regions, warns a new study published in Proceedings of the National Academy of Science. The study, used climate, hydrological, and land use models to forecast the impact of potential forest loss on hydropower generation on the Xingu River, a major tributary of the Amazon where the world's third largest dam — Belo Monte — is currently under construction.

New endangered list for ecosystems modeled after 'Red list' for species

2013-05-09T23:34:00Z

The IUCN has unveiled the first iteration of its new Red List of Ecosystems, a ranking of habitats worldwide.

Uranium mine at edge of Grand Canyon National Park approved

2013-05-08T14:53:00Z

Uranium mining on the doorstep of the Grand Canyon national park is set to go ahead in 2015 despite a ban imposed last year by Barack Obama. Energy Fuels Resources has been given federal approval to reopen its old Canyon Mine, located six miles south of the canyon's popular South Rim entrance, that attracts nearly 5 million visitors a year.

Tribesmen launch 'occupy' protest at dam site in the Amazon rainforest

2013-05-03T19:32:00Z

On Thursday roughly 200 indigenous people launched an occupation of a key construction site for the controversial Belo Monte dam in the Brazilian Amazon. The protestors, who represent communities that will be affected by the massive dam, are demanding immediate suspension of all work on hydroelectric projects on the Xingu, Tapajós and Teles Pires rivers until they are properly consulted, according to a coalition of environmental groups opposing the projects.

Mekong region has lost a third of its forests in 30 years, may lose another third by 2030

2013-05-03T02:15:00Z

The Greater Mekong region of Cambodia, Laos, Myanmar (Burma), Thailand and Vietnam will lose a third of its remaining forest cover by 2030 unless regional governments improve management of natural resources and transition toward a greener growth model, warns a new report issued by WWF.

Indigenous tribes say effects of climate change already felt in Amazon rainforest

2013-04-30T21:46:00Z

Tribal groups in Earth's largest rainforest are already being affected by shifts wrought by climate change, reports a paper published last week in the British journal Philosophical Transactions of the Royal Society B. The paper, which is based on a collection of interviews conducted with indigenous leaders in the Brazilian Amazon, says that native populations are reporting shifts in precipitation patterns, humidity, river levels, temperature, and fire and agricultural cycles. These shifts, measured against celestial timing used by indigenous groups, are affecting traditional ways of life that date back thousands of years.

Featured documentary: Damocracy, highlighting the battles over the Belo Monte and Ilisu dams

2013-04-29T14:19:00Z

A new short documentary highlights the battles over monster dam projects imperiling local people and wild rivers. Examining the Belo Monte dam in Brazil and the Ilisu dam in Turkey, the documentary argues that such hydroelectric projects cannot be deemed "green" energy as they overturn lives, livelihoods, and ecosystems.

The river of plenty: uncovering the secrets of the amazing Mekong

2013-04-23T14:45:00Z

Home to giant catfish and stingrays, feeding over 60 million people, and with the largest abundance of freshwater fish in the world, the Mekong River, and its numerous tributaries, brings food, culture, and life to much of Southeast Asia. Despite this, little is known about the biodiversity and ecosystems of the Mekong, which is second only to the Amazon in terms of freshwater biodiversity. Meanwhile, the river is facing an existential crisis in the form of 77 proposed dams, while population growth, pollution, and development further imperil this understudied, but vast, ecosystem.

Judge halts military-backed dam assessment in Brazil's Amazon

2013-04-17T15:05:00Z

A federal court in Brazil has suspended the use of military and police personnel during technical research on the controversial São Luíz do Tapajós Dam in the Brazilian Amazon. The military and police were brought in to stamp down protests from indigenous people living along the Tapajós River, but the judge decreed that impacted indigenous groups must give free, prior, and informed consent (FPIC) before any furter studies can be done on the proposed dam. However, the decision is expected to be appealed.

Yangtze porpoise down to 1,000 animals as world's most degraded river may soon claim another extinction

2013-04-16T16:30:00Z

A survey late last year found that the Yangtze finless porpoise (Neophocaena asiaeorientalis asiaeorientalis) population has been cut in half in just six years. During a 44-day survey, experts estimated 1,000 river porpoises inhabited the river and adjoining lakes, down from around 2,000 in 2006. The ecology of China's Yangtze River has been decimated the Three Gorges Dam, ship traffic, pollution, electrofishing, and overfishing, making it arguably the world's most degraded major river. These environmental tolls have already led to the likely extinction of the Yangtze river dolphin (Lipotes vexillifer), or baiji, and possibly the Chinese paddlefish (Psephurus gladius), which is one of the world's longest freshwater fish.

Indigenous group: Brazil using military to force Amazon dams

2013-04-08T12:35:00Z

An Amazonian community has threatened to "go to war" with the Brazilian government after what they say is a military incursion into their land by dam builders. The Munduruku indigenous group in Para state say they have been betrayed by the authorities, who are pushing ahead with plans to build a cascade of hydropower plants on the Tapajós river without their permission.

After decades of turning a blind eye, Peru declares state of emergency due to oil contamination in Amazon

2013-03-26T21:51:00Z

The Peruvian government has declared an environmental state of emergency after finding elevated levels of lead, barium, and chromium in the Pastaza River in the Amazon jungle, reports the Associated Press. Indigenous peoples in the area have been complaining for decades of widespread contamination from oil drilling, but this is the first time the Peruvian government has acknowledged their concerns. Currently 84 percent of the Peruvian Amazon is covered by potential oil blocs, leading to conflict with indigenous people and environmental degradation.

Jaguars, tapirs, oh my!: Amazon explorer films shocking wildlife bonanza in threatened forest

2013-02-19T14:55:00Z

Watching a new video by Amazon explorer, Paul Rosolie, one feels transported into a hidden world of stalking jaguars, heavyweight tapirs, and daylight-wandering giant armadillos. This is the Amazon as one imagines it as a child: still full of wild things. In just four weeks at a single colpa (or clay lick where mammals and birds gather) on the lower Las Piedras River, Rosolie and his team captured 30 Amazonian species on video, including seven imperiled species. However, the very spot Rosolie and his team filmed is under threat: the lower Las Piedras River is being infiltrated by loggers, miners, and farmers following the construction of the Trans-Amazon highway.

Brazilian agency rejects Canadian company's bid to mine controversial Amazon dam site for gold

2013-02-13T19:52:00Z

Brazil's Federal Public Ministry rejected a proposed gold mining project adjacent to a controversial dam site in the heart of the Amazon rainforest, reports Amazon Watch, an environmental activist group that is campaigning against both the mine and the dam.

Amazon river ecosystems being rapidly degraded, but remain neglected by conservation efforts

2013-02-08T19:30:00Z

The world's largest river system is being rapidly degraded and imperiled by dams, mining, overfishing, and deforestation, warns a study published last week by an international team of scientists.

Fish unable to pass through dams in U.S. presents 'cautionary tale' for developing world

2013-01-17T22:39:00Z

Dams create a largely impenetrable barrier for fish even when the dams were installed with specially-built passages, according to a new study in Conservation Letters. The scientists found that migrating fish largely failed to use the passages in the U.S., resulting in far fewer moving through the state-of-the-art hydroelectric dams than had been promised. The researchers say that their findings are a "cautionary tale" for developing nations.

Gold mine approved in French Guiana's only national park

2013-01-15T18:59:00Z

Tensions have risen in the small Amazonian community of Saül in French Guiana after locals discovered that the French government approved a large-scale gold mining operation near their town—and inside French Guiana's only national park—against their wishes. Run by mining company, Rexma, locals and scientists both fear that the mine would lead to deforestation, water pollution, and a loss in biodiversity for a community dependent on the forest and ecotourism.

Environment ministry drops copper mine in Zambezi park

2013-01-07T18:38:00Z

A proposed copper mine set to be built in Lower Zambezi National Park has been rejected by Zambia's environmental management agency. Australian company Zambezi Resources Ltd, a subsidiary of Proactive Investors, had scheduled the $494 million Kangaluwi Copper Project to begin production in 2015. But their proposal sparked an outcry from environmentalists and government lobbyists concerned about the effects of the open pit mine in the park. Though mining is not generally permitted in the park, Zambezi Resources obtained a Large-Scale Mining License from the government which would have allowed them to mine for 25 years right in the middle of Lower Zambezi National Park.

China plans over 300 dam projects worldwide

2012-12-10T20:26:00Z

A new report by the NGO, International Rivers, takes an in-depth look at the role China is playing in building mega-dams worldwide. According to the report, Chinese companies are involved in 308 hydroelectric projects across 70 nations. While dams are often billed as "green energy," they can have massive ecological impacts on rivers, raise local conflict, and even expel significant levels of greenhouse gases when built in the tropics.

Dams are rapidly damning the Amazon

2012-12-08T03:48:00Z

Dam-builders seeking to unlock the hydroelectric potential of the Amazon are putting the world's mightiest river and rainforest at risk, suggests a new assessment that charts the rapid expansion of dams in the region.

Forests, farming, and sprawl: the struggle over land in an Amazonian metropolis

2012-12-04T23:21:00Z

The city of Parauapebas, Brazil is booming: built over the remains of the Amazon rainforest, the metropolis has grown 75-fold in less than 25 years, from 2,000 people upwards of 150,000. But little time for urban planning and both a spatial and mental distance from the federal government has created a frontier town where small-scale farmers struggle to survive against racing sprawl, legal and illegal mining, and a lack of investment in environmental protection. Forests, biodiversity, and subsistence farmers have all suffered under the battle for land. In this, Parauapebas may represent a microcosm both of Brazil's ongoing problems (social inequality, environmental degradation, and deforestation) and opportunity (poverty alleviation, reforestation, and environmental enforcement).

Brazilian bank approves $10.8 billion loan for controversial Amazon rainforest dam

2012-11-30T23:03:00Z

Brazil's National Development Bank (BNDES) on Monday announced it has approved a $10.8 billion (22.5 billion Brazilian reais) loan to the consortium that is building the controversial Belo Monte dam in the state of Par´ in the heart of the Amazon rainforest, reports International Rivers, a group that is campaigning against the dam. The loan in the largest in the bank's 60-year history, according to the group.

Introducing the 'Obama-fish'

2012-11-30T22:03:00Z

Scientists have named five newly discovered fish after former and current U.S. political leaders, including President Barack Obama, Bill Clinton, Al Gore, Jimmy Carter, and Teddy Roosevelt, reports the Tennessee Aquarium Conservation Institute and Scientific American.

Controversial dam gets approval in Laos

2012-11-07T12:46:00Z

Laos has given approval to the hugely-controversial $3.5 billion Xayaburi Dam on the Mekong River, reports the BBC. The massive dam, which would provide 95 percent of its energy production to Thailand, has been criticized for anticipated impacts on the river's fish populations, on which many locals depend.

Artificial 'misting system' allows vanished toad to be released back into the wild

2012-11-01T17:38:00Z

In 1996 scientists discovered a new species of dwarf toad: the Kihansi spray toad (Nectophrynoides asperginis). Although surviving on only two hectares near the Kihansi Gorge in Tanzania, the toads proved populous: around 17,000 individuals crowded the smallest known habitat of any vertebrate, living happily off the moist micro-habitat created by spray from adjacent waterfalls. Eight years later and the Kihansi spray toad was gone. Disease combined with the construction of a hydroelectric dam ended the toads' limited, but fecund, reign.

Future of the Tongass forest lies in salmon, not clear-cut logging

2012-10-25T22:20:00Z

The Parnell administration's Timber Task Force recently unveiled a proposal to carve out two million acres of the Tongass National Forest for clear-cut logging under a state-managed "logging trust." The stated goal is to revive Southeast Alaska’s timber industry that collapsed two decades ago amid changing market conditions, logging cutbacks and evolving public opinion about timber harvesting on national forests.

El Salvador mulls total ban on mining

2012-10-22T13:30:00Z

On hot days the broken stone and dried up silt from the San Sebastian mine in Eastern El Salvador bake in the sun. The slew of refuse is freckled with rock stained bright blue with cyanide, open to the elements that on rainier days will wash it downhill into the Rio San Sebastian below. The openings of passages into the mine dot the mountainside, and further downhill a bright orange stream with a chemical stench flows into another. The American Commerce Group ceased operating here in 1999 but sought to return when the price of gold began its current escalation.

Indigenous groups re-occupy Belo Monte dam in the Amazon

2012-10-09T19:35:00Z

Construction on Brazil's megadam, Belo Monte, has been halted again as around 150 demonstrators, most of them from nearby indigenous tribes, have occupied the main construction site at Pimental. Over a hundred indigenous people joined local fishermen who had been protesting the dam for 24 days straight. Indigenous people and local fishermen say the dam will devastate the Xingu River, upending their way of life.

Photos: camera traps capture wildlife bonanza in Borneo forest corridor

2012-09-10T17:56:00Z

Camera traps placed in a corridor connecting two forest fragments have revealed (in stunning visuals) the importance of such linkages for Borneo's imperiled mammals and birds. Over 18 months, researchers with the Sabah Wildlife Department (SWD) and the Danau Girang Field Centre (DGFC) have photographed wildlife utilizing the corridor located in the Lower Kinabatangan Wildlife Sanctuary in Malaysian Borneo.

Brazil's controversial Belo Monte back on track after court decision overruled

2012-08-29T00:33:00Z

Brazil's Supreme Court on Tuesday ordered work on the controversial Belo Monte dam in the Amazon to resume, overturning a lower court order that suspended the project less than two weeks ago. Construction activities by the Norte Energia, the consortium building the dam, resumed immediately, according to the Associated Press.

Mekong dam spree could create regional food crisis

2012-08-27T14:22:00Z

Fish are a hugely important protein source for many people around the world. This is no more evident than along the lower Mekong River delta where an estimated 48 million people depend directly on the river for food and livelihoods. But now a new study in Global Environmental Change cautions that 11 planned hydroelectric dams in the region could cut vital fish populations by 16 percent while putting more strain on water and land resources.

Construction of controversial Belo Monte dam stopped

2012-08-24T17:26:00Z

Belo Monte dam developer Norte Energia, S.A. has stopped all work on the Belo Monte dam after receiving formal notification of the decision last week by the Brazilian Federal Appeals Court to suspend the project, reports International Rivers. Norte Energia said it would take 'all available measures to reverse the decision.'

Chinook salmon return to Olympic National Park after dam demolished

2012-08-21T17:51:00Z

In March of this year the Elwha Dam, which had stood for 99 years, was demolished in the U.S. state of Washington. Five months later, Chinook salmon (Oncorhynchus tshawytscha) made their way down 70 miles of long-blocked off habitat and entered Olympic National Park.

Belo Monte mega-dam halted again by high Brazilian court, appeal likely but difficult

2012-08-15T19:53:00Z

A high federal court in Brazil has ruled that work on the Belo Monte dam in the Brazilian Amazon be immediately suspended. Finding that the government failed to properly consult indigenous people on the dam, the ruling is the latest in innumerable twists and turns regarding the massive dam, which was first conceived in the 1970s, and has been widely criticized for its impact on tribal groups in the region and the Amazon environment. In addition the Regional Federal Tribunal (TRF1) found that Brazil's Environmental Impact Assessment was flawed since it was conducted after work on the dam had already begun.

Indigenous tribes hold 3 engineers hostage over Belo Monte dam

2012-07-26T15:58:00Z

Three engineers are being held hostage by the Juruna and Arara indigenous tribes as tensions rise over the on-going construction of the Belo Monte dam in Brazil, reports the Indigenous rights NGO Amazon Watch. The company building the dam, Norte Energia, has confirmed that three of its employees were being held against their will. Tribal groups in the region say the massive dam will upend their way of life, and that construction is already making travel along the Xingu river difficult.

Controversial Xayaburi dam in Laos officially suspended

2012-07-15T00:17:00Z

Work on the controversial Xayaburi dam in the People's Democratic Republic of Lao has been suspended, reports Reuters.

Indigenous tribes end occupation of Belo Monte

2012-07-12T14:28:00Z

After occupying the construction site of the massive Belo Monte dam for 21 days, some 300 indigenous people have left and gone home. The representatives from nine Amazonian tribes abandoned their occupation after two days of meeting with the dam's builder, the Norte Energia consortium.

Proliferation of mountain roads a hazard to the environment in SE Asia

2012-07-12T05:57:00Z

Mountain roads in rural Southeast Asia are providing market access for remote communities but causing significant environmental harm, including deforestation, landslides, and soil erosion, sometimes undermining the benefits they offer, warns a commentary published in Nature Geoscience.

Indigenous leaders demand suspension of Belo Monte dam

2012-07-10T00:06:00Z

Indigenous leaders from six Amazon tribes have asked the Brazilian government to immediately suspend the installation license for the controversial Belo Monte dam, reports Amazon Watch, an activist group that is campaigning against the project.

Indigenous tribes occupy Belo Monte dam for over 10 days

2012-07-03T17:46:00Z

As of Tuesday, the occupation of Belo Monte dam by indigenous tribes entered its 13th day. Indigenous people, who have fought the planned Brazilian dam for decades, argue that the massive hydroelectric project on the Xingu River will devastate their way of life. According to a statement from the tribes, 17 indigenous villages from 13 ethnic groups are now represented at the occupation, which has successfully scuttled some work on the dam.

Photo: Human canvas on Rio beach protests Brazil's dam-building spree in the Amazon

2012-06-20T00:36:00Z

Nearly 1500 people formed a human banner on a beach in Rio de Janeiro today to protest plans to build dozens of dams in the Amazon basin, reports Amazon Watch, an NGO campaigning against Brazil's controversial Belo Monte dam.

The vanishing Niger River imperils tourism and livelihoods in the desert

2012-06-04T14:19:00Z

Severely affected by recent turmoil across its northern frontiers, Nigerien tourism pins hope on river valley attractions to play a major role in rebuilding its tourism industry in the upcoming years. Even though the river itself is threatened. Located in the heart of the Sahel Region, the vast desert lands of Niger have captivated European tourists seeking a taste of its immensely varied natural landscapes.

Charting a new environmental course in China

2012-05-21T16:08:00Z

Founded in 1951, The Nature Conservancy (TNC) works in more than 30 countries and has projects in all 50 of the United States. The Conservancy has over one million members, and has protected more than 119 million acres of wild-lands and 5,000 miles of rivers worldwide. TNC has taken an active interest in China, the world's most populated nation, and in many important ways, a critical center of global development. The following is an interview with multiple directors of The Nature Conservancy's China Program.

Exploring Asia's lost world

2012-05-03T17:19:00Z

Abandoned by NGOs and the World Bank, carved out for rubber plantations and mining by the Cambodian government, spiraling into a chaos of poaching and illegal logging, and full of endangered species and never-explored places, Virachey National Park may be the world's greatest park that has been written off by the international community. But a new book by explorer and PhD student, Greg McCann, hopes to change that. Entitled Called Away by a Mountain Spirit: Journey to the Green Corridor, the book highlights expeditions by McCann into parts of Virachey that have rarely been seen by outsiders and have never been explored scientifically, including rare grasslands that once housed herds of Asian elephants, guar, and Sambar deer, before poachers drove them into hiding, and faraway mountains with rumors of tigers and mainland Javan rhinos.

Over 30 Yangtze porpoises found dead in China as population nears extinction

2012-05-01T14:43:00Z

Six years after the Yangtze river dolphin (Lipotes vexillifer), or baiji, was declared "functionally extinct" by scientists, another marine mammal appears on the edge of extinction in China's hugely degraded Yangtze River. In less than two months, 32 Yangtze finless porpoises (Neophocaena asiaeorientalis asiaeorientalis), a subspecies of the finless porpoise, have been dead found in Dongting and Poyang Lakes in the Yangtze, reports the World Wide Fund for Nature (WWF).

Will mega-dams destroy the Amazon?

2012-04-18T21:15:00Z

More than 150 new dams planned across the Amazon basin could significantly disrupt the ecological connectivity of the Amazon River to the Andes with substantial impacts for fish populations, nutrient cycling, and the health of Earth's largest rainforest, warns a comprehensive study published in the journal PLoS ONE. Scouring public data and submitting information requests to governments, researchers Matt Finer of Save America’s Forests and Clinton Jenkins of North Carolina State University documented plans for new dams in Bolivia, Brazil, Colombia, Ecuador, and Peru.