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Understanding the Grand Canyon s low-flow future
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Low-flow research on Colorado River sheds light on eventual new normal for Grand Canyon
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Freshwater fish are under threat, with as many as a third of global populations in danger of extinction, according to an assessment.
Populations of migratory freshwater fish have plummeted by 76 per cent since 1970, and large fish those weighing more than 30 kilograms have been all but wiped out in most rivers. The global population of megafish is down by 94 per cent, and 16 freshwater fish species were declared extinct last year.
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The report by 16 global conservation organizations, called The World’s Forgotten Fishes, said that global populations of freshwater fish were in freefall. The problems are diverse and include pollution, overfishing and destructive fishing practices, the introduction of invasive non-native species, climate change and the disruption of river ecologies. Most of the world’s rivers are now d
World s forgotten fishes vital for hundreds of millions of people but one-third face extinction, warns new report
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