It looks like cod is due to have a difficult time as much of I used in the UK originates in the Barent's Sea near the Arctic (https://www.theguardian.com/environment/2019/jan/25/cod-stocks-on-course-to-crash-if-ocean-warming-continues). These cold waters absorb much more carbon dioxide than warmer seas and this results, via the formation of carbonic acid, in acidification. It has been demonstrated that a combination of acidification and increasing temperature greatly increases mortality in cod larvae. The scientists predict that initial warming will increase cod stocks but they will subsequently crash to near zero as the fry fry, as the sea temperature reaches 6 degrees Centigrade.
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