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News articles on rivers
Mongabay.com news articles on rivers in blog format. Updated regularly.
(02/20/2014) Nicaragua's plans for a canal linking the Pacific and Atlantic Oceans could trigger an environmental disaster through habitat destruction and alteration, introduction of non-native species, pollution, and sedimentation, warns a commentary published in this week's issue of Nature.
New dolphin discovered in the Amazon surprises scientists
(01/23/2014) Researchers have discovered a new species of river dolphin from the Amazon. Writing in the journal Plos One, scientists led by Tomas Hrbek of Brazil's Federal University of Amazonas formally describe Inia araguaiaensis, a freshwater dolphin that inhabits the Araguaia River Basin. It is the first true river dolphin discovered since 1918.
Pet fish invade ecosystem, upending nutrients and impoverishing fishers
(10/02/2013) If you, or someone you know, owns a freshwater aquarium, chances are you have seen the peculiar little creature attached face-first to the glass in effort to find a morsel of algae. This algae eater, popularly known as the sucker fish, is the sailfin catfish, or plecos. It is one of the most commonly purchased fish in the freshwater aquarium fish trade, and, according to recent research in The Royal Society B, aquarists often reintroduce the sucker-fish into the wild with detrimental consequences.
Judge halts construction of Amazon dam on Brazil's Teles Pires river
(09/19/2013) A federal judge in Brazil has ordered the suspension of construction activities on the Teles Pires due to shortcomings in the environmental licensing process, including the project's impacts on three local tribes, reports International Rivers.
Forgotten species: the arapaima or 'dinosaur fish'
(07/15/2013) Let's go back some 14,000 years (or up to 50,000 depending on who you talk to), since this is the first time humans encountered the meandering, seemingly endless river system of the Amazon. Certainly, the world's first Amazonians would have been astounded by the giant beasts of the region, including ground sloths and mastodons (both now extinct), as well as giant anteaters, armadillos, and tapirs, currently the biggest land animal on the continent. But these first explorers might have been even more surprised by what dwelled in the rivers: anaconda, caiman, and the arapaima. Wait, the what?
Stand up paddleboarding in the Amazon for conservation
(07/09/2013) This week an international team is setting off on a unique journey, aiming to be the first to descend the Amazon River using inflatable Stand Up Paddle boards. The group, led by Dr. Mika Peck, a conservation biologist from the University of Sussex with years of work in Ecuador and Colombia, includes Brazilian and Colombian researchers as well as an indigenous community leader.
Yangtze finless porpoise drops to Critically Endangered
(07/07/2013) The newest update to the IUCN Red List has downgraded the status of the Yangtze finless porpoise (Neophocaena asiaeorientalis asiaeorientalis) from Endangered to Critically Endangered, reflecting the deteriorating state of arguably the world's most degraded river system. The downgrade follows a survey last year that counted only 1,000 animals, a 50 percent decline from 2006.
Pesticides decimating dragonflies and other aquatic insects
(06/18/2013) While recent research (and media attention) has focused on the alleged negative impacts of pesticides on bees, the problem may be far broader according to a new study in the Proceedings of the US Academy of Sciences (PNAS). Looking at over 50 streams in Germany, France, and Australia, scientists in Europe and Australia found that pesticide contamination was capable of undercutting invertebrate biodiversity by nearly half.
11,000 barrels of oil spill into the Coca River in the Amazon
(06/12/2013) On May 31st, a landslide ruptured an oil pipeline in Ecuadorean Amazon, sending around 11,000 barrels of oil ( 420,000 gallons) into the Coca River. The oil pollution has since moved into the larger Napo River, which borders Yasuni National Park, and is currently heading downstream into Peru and Brazil. The spill has occurred in a region that is notorious for heavy oil production and decades of contamination, in addition to resistance and lawsuits by indigenous groups.
Conserving the long-neglected freshwater fish of Borneo
(06/11/2013) Borneo is a vast tropical island known for orangutans, rhinos, elephants, sun bears, proboscis monkeys, hornbills, and ubiquitous leeches. Conservationists have championed all of these species (aside from the leeches) in one way or another, but like many tropical regions Borneo's freshwater species have long been neglected, despite their rich biodiversity and importance to local people. But a new organization, the Kinabatangan River Spirit Initiative, is working to change that.
China to build $17B worth of dams in Indonesian Borneo
(06/09/2013) Two Chinese companies — China Power Investment Corporation and Anhui Conch Cement — will invest $17 billion in dams in North Kalimantan, Indonesia's newest province located on the island of Borneo, reports the Jakarta Globe.
Scientists discover high mercury levels in Amazon residents, gold-mining to blame
(05/28/2013) The Madre de Dios region in Peru is recognized for its lush Amazon rainforests, meandering rivers and rich wildlife. But the region is also known for its artisanal gold mining, which employs the use of a harmful neurotoxin. Mercury is burned to extract the pure gold from metal and ore producing dangerous air-borne vapors that ultimately settle in nearby rivers. 'Mercury in all forms is a potent neurotoxin affecting the brain, central nervous system and major organs,'Luis Fernandez, an ecologist and research associate at the Carnegie Institution's Department of Global Ecology, told mongabay.com. 'At extremely high exposure levels, mercury has been documented to cause paralysis, insanity, coma and death.'
Water crisis widening: 4.5 billion people live near 'impaired water sources'
(05/28/2013) The majority of the 9 billion people on Earth will live with severe pressure on fresh water within the space of two generations as climate change, pollution and over-use of resources take their toll, 500 scientists have warned.
Mystery of Amazon River carbon emissions solved
(05/21/2013) 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
(05/21/2013) 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
(05/14/2013) 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
(05/13/2013) 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
(05/13/2013) 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
(05/09/2013) 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
(05/08/2013) 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
(05/03/2013) 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
(05/03/2013) 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
(04/30/2013) 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
(04/29/2013) 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
(04/23/2013) 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
(04/17/2013) 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
(04/16/2013) 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
(04/08/2013) 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
(03/26/2013) 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
(02/19/2013) 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
(02/13/2013) 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
(02/08/2013) 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
(01/17/2013) 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
(01/15/2013) 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
(01/07/2013) 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
(12/10/2012) 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
(12/08/2012) 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
(12/04/2012) 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
(11/30/2012) 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'
(11/30/2012) 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
(11/07/2012) 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
(11/01/2012) 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
(10/25/2012) 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
(10/22/2012) 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
(10/09/2012) 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
(09/10/2012) 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
(08/29/2012) 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
(08/27/2012) 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
(08/24/2012) 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
(08/21/2012) 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.
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