Ocean acidification could wipe out krill

A paper in Nature Climate Change finds that krill in the Southern Ocean are seriously threatened by acidification of the ocean from rising levels of carbon dioxide.

Antarctic krill play a vital part in the marine food chain and are the largest fishery resource in the Southern Ocean.

According to the paper by Kawaguchi of the Antarctic Climate and Ecosystem CRC based in Hobart, levels of acidification anticipated to occur by 2100 could pose a high risk to krill egg hatch rates. The paper warns that, “unless CO2 emissions are mitigated, the Southern Ocean krill population could collapse by 2300 with dire consequences for the entire ecosystem.”

Climate Spectator, 9 July 2013. Article.

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