fred hawkshaw 
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Re: “What's Behind the Decline of the West Coast's Herring?

https://www.sciencemag.org/news/2019/08/century-old-salmon-smeared-notebooks-reveal-past-bounty-fisheries.
Quote: “ This week, scientists unveiled a study that makes clever use of the fish DNA preserved in the battered, smeared books to reconstruct how wild Skeena salmon have fared over the past century. The conclusion is sobering: Declines have been more precipitous and widespread than previously understood, with the river’s 13 major wild sockeye salmon populations plummeting by 56% to 99% over the period from 1913 to 2014. https://www.cbc.ca/news/canada/british-columbia/skeena-river-sockeye-genetic-study-1.5252649
Quote: "What we found was those populations with historically the largest body size have declined the most, which suggests that fisheries selectivity is the most probable driver," Price said. He said there are likely other contributing factors, but selective gill-netting for larger fish appears to be the best explanation.”

Posted by fred hawkshaw on 12/12/2019 at 12:58 PM

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