Hydropower Dams Threaten One-Third Of The World’s Freshwater Fish
By Elizabeth Grossman for Earth Island Journal - Three of the world’s most important tropical river basins — the Amazon, the Congo and the Mekong — are experiencing an unprecedented boom in the construction of hydropower dams. According to a paper by more than three dozen scientists from universities, research institutions and conservation organizations around the world, which will be pubished tomorrow in Sciencemagazine, these projects pose a major threat to biodiversity, including to one-third of all the world’s freshwater fish species. The authors say long-term impacts of tropical hydropower projects are rarely assessed adequately and call for better — and more transparent — planning that more accurately evaluates the full costs of these dams.