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News articles on rivers
Mongabay.com news articles on rivers in blog format. Updated regularly.
21% of Africa's freshwater plants and animals threatened
(09/02/2010) 21 percent of African freshwater plant and animal species are threatened with extinction, according to a five year assessment of 5,167 freshwater species by 200 scientists.
Cold snap may have killed millions of fish in Bolivia, poisoning rivers
(08/31/2010) Although the last few months have been some of the warmest worldwide on record, including 17 countries reaching or breaking all-time highs, temperatures have not been above average everywhere. Cold air from Antarctica has brought chilling temperatures to parts of South America, including Bolivia where millions of fish and thousands of caimans, turtles, and river dolphins have perished according to Nature Communications.
A slow comeback for the endangered Eurasian otter in France
(08/29/2010) In the late 1970s, the fate of the Eurasian Otter (Lutra lutra) in France was very gloomy. By just looking at the otter's range map, one could see that most of the country was left with vast regions devoid of a species that was once found in every region. Estimations barely reached 1,500 otters left in the wild for the whole country. Today, 2,000 to 3,000 individuals are believed to room in creeks and rivers mostly in the Massif Central, the Atlantic side (Bretagne) and western area, in particular in the wetland of Poitevin. The upward trend in population size is good news and a step towards reconstituting sustainable populations, however, the overall population is still critically low. By contrast, in the early 1900s otters were quite abundant in France with over 50,000 wild animals.
146 dams threaten Amazon basin
(08/19/2010) Although developers and government often tout dams as environmentally-friendly energy sources, this is not always the case. Dams impact river flows, changing ecosystems indefinitely; they may flood large areas forcing people and wildlife to move; and in the tropics they can also become massive source of greenhouse gases due to emissions of methane. Despite these concerns, the Amazon basin—the world's largest tropical rainforest—is being seen as prime development for hydropower projects. Currently five nations—Brazil, Bolivia, Colombia, Ecuador, and Peru—are planning over 146 big dams in the Amazon Basin. Some of these dams would flood pristine rainforests, others threaten indigenous people, and all would change the Amazonian ecosystem. Now a new website, Dams in Amazonia, outlines the sites and impacts of these dams with an interactive map.
Indigenous tribes occupy dam in Brazil, demand reparations
(07/27/2010) An indigenous group in Brazil has taken over a hydroelectric dam, which they state has polluted vital fishing grounds and destroyed sacred burial ground. They are demanding reparations for the damage done and that no more dams are built in the region without their prior consent.
Environmentalists and indigenous groups condemn plan for six dams in Peruvian Amazon
(06/21/2010) Environmentalists and indigenous groups have come together to condemn a 15 million US dollar plan for six hydroelectric dams in the Peruvian Amazon, signed last week by Brazilian President Luiz Inácio Lula da Silva and Peruvian President, Alan Garcia. While the six dams would produce over 6,000 megawatts, mostly for Brazil, critics say the dams will flood tens of thousands of hectares of rainforest, devastate the lifestyles of a number of indigenous groups, and only serve big Brazilian corporations.
'Prepare for war': tensions rising over Brazil's controversial Belo Monte dam
(05/25/2010) Tensions are flaring after Brazil's approval of the Belo Monte dam project last month to divert the flow of the Xingu River. The dam, which will be the world's third larges, will flood 500 square miles of rainforest, lead to the removal of at least 12,000 people in the region, and upturn the lives of 45,000 indigenous people who depend on the Xingu. After fighting the construction of the dam for nearly thirty years, indigenous groups are beginning to talk of a last stand.
World failing on every environmental issue: an op-ed for Earth Day
(04/22/2010) The biodiversity crisis, the climate crisis, the deforestation crisis: we are living in an age when environmental issues have moved from regional problems to global ones. A generation or two before ours and one might speak of saving the beauty of Northern California; conserving a single species—say the white rhino—from extinction; or preserving an ecological region like the Amazon. That was a different age. Today we speak of preserving world biodiversity, of saving the 'lungs of the planet', of mitigating global climate change. No longer are humans over-reaching in just one region, but we are overreaching the whole planet, stretching ecological systems to a breaking point. While we are aware of the issues that threaten the well-being of life on this planet, including our own, how are we progressing on solutions?
Off and on again: Belo Monte dam goes forward, protests planned
(04/20/2010) An auction to build the Belo Monte dam, a massive hydroelectric project in Brazil, is going ahead despite two court-ordered suspensions, both of which have been overturned. The dam, which would be the world's third-largest, has been criticized by indigenous groups, environmental organizations, and most recently filmmaker James Cameron who created the wildly popular Avatar.
Brazil suspends Amazon dam project targeted by Avatar director
(04/15/2010) A Brazilian judge on Wednesday suspended the preliminary license for the Belo Monte hydroelectric dam, a controversial project in the heart of the Amazon rainforest, citing "danger of irreparable harm," reports the Amazon Watch, an NGO that has been campaigning on the issue. The move comes just days after a high-profile visit by James Cameron, director of the box office hit Avatar, and Sigourney Weaver, one of the stars of Avatar, to indigenous communities potentially affected by the dam.
Hope for survival as isolated orangutans joined by rope bridge
(04/11/2010) Researchers in the Malaysian state of Sabah in Borneo are joyful after receiving confirmation that a young male orangutan used a rope bridge to cross a river, which has separated one orangutan population from another. Due to logging and clearing forests for oil palm plantations, which cover 18 percent of land in Sabah, orangutans on the Kinabantangan River have been cut into fragmented populations.
James Cameron, in real life, fights to save indigenous groups from massive dam construction in Brazil
(04/01/2010) After creating a hugely successful science-fiction film about a mega-corporation destroying the indigenous culture of another planet, James Cameron has become a surprisingly noteworthy voice on environmental issues, especially those dealing with the very non-fantastical situation of indigenous cultures fighting exploitation. This week Cameron traveled to Brazil for a three-day visit to the Big Bend (Volta Grande) region of the Xingu River to see the people and rainforests that would be affected by the construction of the Belo Monte Hydroelectric Dam. Long-condemned by environmentalists and indigenous-rights groups, the dam would destroy 500 square kilometers of pristine rainforest and force the relocation of some 12,000 people.
El Niño in Venezuela: Hugo Chávez’s "Katrina" Moment?
(03/22/2010) Venezuelan President Hugo Chávez has been in power for more than ten years, during which time he has deflected numerous electoral challenges, a recall effort, a coup d’etat and even an oil lock out. A politically adroit statesman, he has demonstrated enormous staying power throughout all these political crises. Yet, Chávez’s luck may have finally run out: a devastating El Niño-linked drought has recently ravaged Venezuela and the government has been forced to undertake conservation measures for water and electricity. Hardly amused, some are holding Chávez responsible for the energy crunch and the drought could exact a heavy toll on the Venezuelan president in September’s legislative elections.
Scientists discover world's first amphibious insects: Hawaiian caterpillars
(03/22/2010) Scientists have never before discovered a truly amphibious insect until now: writing in the Proceedings of the National Academy of Sciences researchers have announced the discovery of 12 species of Hyposmocoma moths in the Hawaiian islands which they consider truly amphibious—that is a species able to survive both on land and underwater indefinitely.
Guyana bans gold mining in the 'Land of the Giants'
(03/01/2010) Guyana has banned gold dredging in the Rewa Head region of the South American country after pressure from Amerindian communities in the area. A recent expedition to Rewa Head turned up unspoiled wilderness and mind-boggling biodiversity. The researchers, in just six weeks, stumbled on the world's largest snake (anaconda), spider (the aptly named goliath bird-eating spider), armadillo (the giant armadillo), anteater (the giant anteater), and otter (the giant otter), leading them to dub the area 'the Land of the Giants'. "During our brief survey we had encounters with wildlife that tropical biologists can spend years in the field waiting for. On a single day we had two tapirs paddle alongside our boat, we were swooped on by a crested eagle and then later charged by a group of giant otters."
Savior of endangered crocodiles dies of malaria
(02/25/2010) Crocodile-expert and conservationist, Dr. John Thorbjarnarson, died of falciparum malaria in India on February 14th at the age of fifty-two. While many conservationists work with publicly popular animals like tigers and whales, Thorbjarnarson’s passion was for crocodiles. A Senior Conservation Scientist with the Wildlife Conservation Society (WCS), Thorbjarnarson proved instrumental in saving both the Orinoco crocodile and the Chinese crocodile from extinction.
Extinct animals are quickly forgotten: the baiji and shifting baselines
(02/23/2010) In 2006 a survey in China to locate the endangered Yangtze River dolphin, known as the baiji, found no evidence of its survival. Despondent, researchers declared that the baiji was likely extinct. Four years later and the large charismatic marine mammal is not only 'likely extinct', but in danger of being forgotten, according to a surprising new study 'Rapidly Shifting Baselines in Yangtze Fishing Communities and Local Memory of Extinct Species' in Conservation Biology. Lead author of the study, Dr. Samuel Turvey, was a member of the original expedition in 2006. He returned to the Yangtze in 2008 to interview locals about their knowledge of the baiji and other vanishing megafauna in the river, including the Chinese paddlefish, one of the world's largest freshwater fish. In these interviews Turvey and his team found clear evidence of 'shifting baselines': where humans lose track of even large changes to their environment, such as the loss of a top predator like the baiji.
China is polluted: first national survey paints disturbing picture
(02/09/2010) The first ever national survey of pollution in China shows a nation that has paid for its economic growth in environmental pollution.
Forgotten Species: the fiery Luristan Newt
(02/08/2010) The salamander was a mythical creature before it was a real one: the word salamander means a legendary lizard that both survived-in and could extinguish fire. A creature that the Ancient Greeks, including Aristotle, appeared to readily believe in. No one knows how the term salamander transferred from a mythical fire-dwelling monster to the small amphibious animals it applies to today, but I have a theory. Perhaps the sight of salamanders like Luristan newt—charcoal-black and flame-orange—caused people in the seventeenth century to lend the name of myth to the taxa.
86 percent of dolphins and whales threatened by fishing nets
(02/07/2010) A new report from the United Nations Environment Program (UNEP) finds that almost 9 out of 10 toothed whales—including dolphins and porpoises—are threatened by entanglement and subsequent drowning from large-scale fishing operations equipment, such as gillnets, traps, longlines, and trawls. These operations threaten the highest percentage (86 percent) of the world's toothed whales.
Bronx Zoo puts 'extinct' frogs on display
(02/02/2010) The Bronx Zoo has a put a most unusual frog on display: the Kihansi spray toad. For one thing, the Kihansi spray toad survived on only 5 acres in the Kihansi gorge in Tanzania, adapted to the areas' unique and constant mist from the gorge and a waterfall. For another, female Kihansi spray toads give birth to live young, instead of laying eggs. Finally, the Kihansi spray toad is extinct—at least in the wild.
Environmentalists and indigenous groups decry approval of massive dam in Amazon
(02/02/2010) The approval of the hydro-electric Belo Monte Dam from the Brazilian environmental agency, IBAMA, has raised condemnations from environmentalists and indigenous groups. The dam will divert the flow of the Xingu River, a tributary of the Amazon River, which runs through the Amazon in northeast Brazil. According to critics the dam will destroy vast areas of pristine rainforest, disrupt sensitive ecosystems, and relocate 12,000 people.
Forgotten species: discovering the shimmer of Maathai's Longleg
(01/13/2010) Few species receive less respect and less conservation attention than insects. This despite the fact that they are some of the most diverse species on the planet andthey provide a number of essential services to humankind, including pollination, pest control, production (for example honey and silk), waster recycling, and indications of habitat health. Scientists are not only unsure just how many species of insects are threatened in world; they are equally uncertain how many insects exist. Currently there are nearly a million insect species described by science, but millions more likely exist. It's probable that innumerable insect species have vanished before even being catalogued by entomologists.
Scientists call for an end to mountaintop removal mining in the US
(01/07/2010) A group of scientists have called for the Obama Administration to place a moratorium on infamous mountain top mining due to "growing scientific evidence" of severe environmental degradation and serious impacts on human health, including cancer. The article, published in Science, is written by a dozen influential scientists, including hydrologists, ecologists, and engineers.
A 'dangerous world' for migratory birds, an interview with Sarah Lehnen
(01/04/2010) Sarah Lehnen has worked with America's rich birdlife for a decade: she has studied everything from songbirds inhabiting dwindling shrub land in Ohio to shorebirds stopping over in the Mississippi Rive alluvial valley, always with an eye towards conservation. Most recently she has been involved in testing migratory birds for avian flu. It may come as a surprise, but American birds are in serious decline. In March of last year, US Secretary of the Interior, Ken Salazar, announced that one-in-three American birds are endangered. Even once common birds are showing precipitous declines. Birds face a barrage of threats, which are only complicated—and heightened—for migratory birds.
Gone: a look at extinction over the past decade
(01/03/2010) No one can say with any certainty how many species went extinct from 2000-2009. Because no one knows if the world's species number 3 million or 30 million, it is impossible to guess how many known species—let alone unknown—may have vanished recently. Species in tropical forests and the world's oceans are notoriously under-surveyed leaving gaping holes where species can vanish taking all of their secrets—even knowledge of their existence—with them.
Oil sands pollution in Canada worse than industry and government claim
(12/07/2009) Canada's tar sands have been internationally criticized as one of the world's largest industrial sources of greenhouse gases, but the energy-intensive extraction of oil also has a less-noted impact on the local environment. A new study shows that the Alberta's oil sands are likely releasing more PACs (polycyclic aromatic compounds) into nearby Athabasca River and its tributaries than the industry-funded and government-supported Regional Aquatics Monitoring Program (RAMP) has reported.
Guyana expedition finds biodiversity trove in area slated for oil and gas development, an interview with Robert Pickles
(11/29/2009) An expedition deep into Guyana's rainforest interior to find the endangered giant river otter—and collect their scat for genetic analysis—uncovered much more than even this endangered charismatic species. "Visiting the Rewa Head felt like we were walking in the footsteps of Wallace and Bates, seeing South America with its natural density of wild animals as it would have appeared 150 years ago," expedition member Robert Pickles said to Mongabay.com.
High gold prices, army collaboration, play role in mining invasion in southern Venezuela
(11/25/2009) Illegal gold mining involving wildcat miners, the Venezuelan army, and indigenous groups is threatening one of the country's most biodiverse river basins, according to local sources.
Ecological benefits of REDD boosted by inclusion of private landowners, potentially harmed by plantations
(11/17/2009) Reducing Emissions from Deforestation and Degradation [REDD] programs that include landowners will conserve more habitat and ensure greater ecosystem services function than programs that focus solely on protected areas, report researchers from the Woods Hole Research Center (WHRC), the Instituto de Pesquisa Ambiental da Amazônia (IPAM), and the Universidade Federal de Minas Gerais (UFMG).
Forgotten species: Madagascar's water-loving mammal, the aquatic tenrec
(11/12/2009) There are many adjectives one could attach to the aquatic tenrec: rare, mysterious, elusive, one-of-a-kind, even adorable, though one tries to stray from such value-laden titles since it excludes so many other non-adorable inhabitants of the animal kingdom. This small and, yes, cute insectivore, also known as the web-footed tenrec, lives in Eastern Madagascar where at night it spends the majority of its time swimming and diving in fast-moving streams for insects and tadpoles. It sleeps during the day in small streamside burrows. To date that is about the extent of our knowledge of this species.
Will Brazil's blackout drive a new push for more rainforest dams?
(11/12/2009) The power outage that affected nearly a third of Brazil's population Tuesday could be used by development interests to justify a renewed push for hydroelectric dams in the Amazon rainforest.
China's Pearl River suffers from "almost impossible to remove" pollution
(10/29/2009) A new study by Greenpeace has found high volumes of heavy metals and organic chemicals in China's Pearl River, which provides drinking water for 47 million people.
Amazonian natives say they will defend tribal lands from Hunt Oil with "their lives"
(10/25/2009) Indigenous natives in the Amazon are headed to the town of Salvacion in Peru with a plan to forcibly remove the Texas-based Hunt Oil company from their land as early as today. Peruvian police forces, numbering in the hundreds, are said to be waiting in the town. The crisis has risen over an area known as Lot 76, or the Amarakaeri Communal Reserve. The 400,000 hectare reserve was created in 2002 to protect the flora and fauna of the area, as well as to safeguard watersheds of particular importance to indigenous groups in the region.
The Yangtze River may have lost another inhabitant: the Chinese paddlefish
(10/22/2009) In December of 2006 it was announced that the Yangtze River dolphin, commonly known as the baiji, had succumbed to extinction. The dolphin had survived on earth for 20 million years, but the species couldn't survive the combined onslaught of pollution, habitat loss, boat traffic, entanglement in fishing hooks, death from illegal electric fishing, and the construction of several massive dams. Now, another flagship species of the Yangtze River appears to have vanished.
Freshwater species worse off than land or marine
(10/15/2009) Scientists have announced that freshwater species are likely the most threatened on earth. Extinction rates for freshwater inhabitants are currently four to six times the rates for terrestrial and marine species. Yet, these figures have not lead to action on the ground.
Power, profit, and pollution: dams and the uncertain future of Sarawak
(09/03/2009) Sarawak, land of mystery, legend, and remote upriver tribes. Paradise of lush rainforest and colossal bat-filled caves. Home to unique and bizarre wildlife including flying lemurs, bearcats, orang-utans and rat-eating plants. Center of heavy industry and powerhouse of Southeast Asia. Come again? This jarring image could be the future of Sarawak, a Malaysian state on the island of Borneo, should government plans for a complex of massive hydroelectric dams comes to fruition. The plan, which calls for a network of 12 hydroelectric dams to be built across Sarawak's rainforests by 2020, is proceeding despite strong opposition from Sarawak's citizens, environmental groups, and indigenous human rights organizations. By 2037, as many as 51 dams could be constructed.
Little hydroelectric dams become all the rage, but do they harm the environment?
(08/23/2009) Looking for a way to create energy that doesn’t contribute to climate change and avoid the usual opposition that comes with building large hydroelectric dams, many energy companies are now pursuing constructing small hydroelectric dams in the wilderness, reports the Wall Street Journal.
After a hundred years, salmon swim by the Eiffel tower again
(08/12/2009) Atlantic salmon have returned to the Seine river reports the AFP. Absent for nearly a century, the salmon have returned entirely of their own volition: no reintroduction efforts were undertaken.
NASA photos show severe flooding in the Amazon
(07/22/2009) Photos released by NASA highlight last month's severe flooding of the Amazon River near the Brazilian city of Manaus.
Ganges River Dolphin population falls below 300, faces new threat from oil exploration
(07/19/2009) The Ganges River Dolphin faces a high risk of extinction in India's Brahmaputra river system unless critical habitat is protected, report conservationists. Once abundant in the Ganges and Brahmaputra river systems in India and Bangladesh, the population of the Ganges River Dolphins has fallen sharply over the past century due to accidental bycatch by fishermen, direct killing for their meat and oil, and diversion of water for agriculture. Scientists estimate that only 2,000 remain, of which 240-300 survive in the Brahmaputra, according to a new survey by IUCN researchers, who warn the Brahmaputra population is also imperiled by new threats, including dam building and prospecting for oil.
Age of the Amazon River estimated at 11 million years
(07/08/2009) A new study, published in the journal Geology, estimates the age of the Amazon river at 11 million years.
New Yangtze River dam could doom more endangered species
(06/22/2009) Eight Chinese environmentalists and scientists have composed a letter warning that a new dam under consideration for the Yangtze River could lead to the extinction of several endangered species. The letter contends that Xiaonanhia Dam, which would be 30 kilometers upstream from the city of Chongqing, will negatively impact the river’s only fish reserve. Spanning 400 kilometers in the upper Yangtze, the reserve is home to 180 fish species, including the Endangered Chinese sturgeon, and the Critically Endangered Chinese paddlefish, as well as the finless porpoise.
108 river basins in Indonesia need rehabiltiation
(06/16/2009) The number of river basins in need rehabilitation in Indonesia climbed from 60 to 108 over the past year says the Ministry of Forestry.
Near-record flooding in the Amazon
(05/13/2009) Near-record flooding has displaced thousands of people in the Brazilian Amazon, reports the Associated Press.
River systems worldwide are losing water due to global warming
(04/22/2009) Many rivers around the world are losing water due to global climate change, according to a new study from the American Meteorological Society's Journal of Climate. Large populations depend on some of the rivers for everything from agriculture to clean drinking resources, including the Yellow River, the Ganges, the Niger, and the Colorado, which have all shown significant declines.
Colorado River unlikely to meet current water demands in warmer, drier world
(04/20/2009) Feeding the water habits of such major cities as Los Angeles, Las Vegas, and Phoenix, in addition to providing irrigation waters for the entire Southwestern United States, has stretched the Colorado River thin. The river no longer consistently reaches the sea as it once did. Now a new study warns that the Colorado River system, which has proven dependable for human use throughout the 20th Century, may soon experience shortages due to global warming.
Dams in Laos threaten Asia's largest waterfall, critically endangered river dolphin
(03/16/2009) Eleven proposed hydroelectric projects on the Mekong River in Southeast Asia threaten migratory fish stocks, regional food security, and the livelihoods of millions of people, warns a new campaign launched by environmental groups.
China delays massive water scheme to redirect rivers from south to north
(12/31/2008) China will delay ambitious plans to divert billions of water to its arid north amid environmental concerns, reports the Wall Street Journal.
Captive breeding of monster Amazon fish could feed people and save it from depletion
(11/26/2008) A new technique for sexing a giant Amazon fish may help create a sustainable source of protein in South America, report researchers writing in Fish Physiology and Biochemistry.
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