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Climate change causing millions of migrating salmon to die from heart failure http://apocadocs.com/s.pl?1301749719
Climate change is causing migrating salmon to die from heart failure in their millions as they stretch every sinew to reach their spawning grounds.
Overheating is such a problem for the sockeye salmon that as they head for their traditional spawning grounds in the Fraser River network in Canada their hearts stop....
"Their hearts just can't cope with the temperatures," said Erika Eliason, of the University of British Columbia in Canada....
It is the combination of exertion and warmer conditions that is proving fatal to the fish, scientists found. Since the 1950s the water temperature has risen by almost 2C and the sockeyes have been in steep decline for the last 20 years, which include several of the hottest years on record.
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[Read more stories about:
climate impacts, migration changes, tipping point]
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