Climate change is shifting productivity of fisheries worldwide, threatens protein source for >50% of world population

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Fish provide a vital source of protein for over half the world’s population, with over 56 million people employed by or subsisting on fisheries. But climate change is beginning to disrupt the complex, interconnected systems that underpin this major source of food. …

These findings highlight the importance of accounting for the effects of climate change in fisheries management. This means coming up with new tools for assessing the size of fish populations, new strategies for setting catch limits that consider changing productivity, and new agreements for sharing catch between winning and losing regions….

Preventing overfishing will be a critical part of addressing the threat that climate change poses to the world’s fisheries….”It makes fish populations more vulnerable to warming, while warming hinders the recovery of overfished populations.”… Ocean acidification, falling oxygen levels and habitat loss will also impact marine life. More research is necessary to fully understand how climate change will affect fish populations and the livelihoods of people that depend on them.

  1. Christopher M. Free, James T. Thorson, Malin L. Pinsky, Kiva L. Oken, John Wiedenmann, Olaf P. Jensen. Impacts of historical warming on marine fisheries productionScience, 2019 DOI: 10.1126/science.aau1758