Report

Slow adaptation in the face of rapid warming leads to collapse of the Gulf of Maine cod fishery

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Science  13 Nov 2015:
Vol. 350, Issue 6262, pp. 809-812
DOI: 10.1126/science.aac9819

Double jeopardy

In the best of worlds, exploited fish stocks are monitored so that harvest quotas protect the reproductive ability of the population. Climate change is likely to complicate this process substantially. Pershing et al. found that cod stocks declined continuously during intense warming in the North Atlantic. Fisheries quotas, even though they were responsibly set and followed by fishers, decreased the reproductive rate. Thus, managing fisheries in a warming world is going to be increasingly problematic.

Science, this issue p. 809