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Climate change impacts on fisheries

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Science  01 Mar 2019:
Vol. 363, Issue 6430, pp. 930-931
DOI: 10.1126/science.aaw5824

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Summary

Food security, climate change, and their complex and uncertain interactions are a major challenge for societies and ecologies (1). Global assessments of predicted changes in crop yield under climate change, combined with international trade dynamics, suggest that disparities between nations in production and food availability will escalate (2). But climate change has already affected productivity. For example, weather-related factors caused declines in global maize and wheat production of 3.8% and 5.5%, respectively, between 1980 and 2008 (3). On page 979 of this issue, Free et al. (4) report a comprehensive analysis that indicates a 4.1% decline between 1930 and 2010 in the global productivity of marine fisheries , with some of the largest fish-producing ecoregions experiencing losses of up to 35%. Their spatial mapping can help to inform future planning and adaptation strategies.