4.7 Article

Redistribution of fisheries catch potential in Mediterranean and North European waters under climate change scenarios

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SCIENCE OF THE TOTAL ENVIRONMENT
卷 879, 期 -, 页码 -

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ELSEVIER
DOI: 10.1016/j.scitotenv.2023.163055

关键词

Fisheries; Maximum Catch Potential; Mediterranean; Climate change; Species distribution

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The Mediterranean Sea is a hotspot of global warming, and future range shifts of key commercial species could impact fisheries catch potential. This study evaluates the projected changes in Mediterranean fisheries catches under different climate scenarios, showing that high emission scenarios could lead to a considerable decrease in catch potential in the South Eastern Mediterranean countries.
The Mediterranean Sea is a hotspot of global warming where key commercial species, such as demersal and pelagic fishes, and cephalopods, could experience abrupt distribution shifts in the near future. However, the extent to which these range shifts may impact fisheries catch potential remains poorly understood at the scale of Exclusive Economic Zones (EEZs). Here, we evaluated the projected changes in Mediterranean fisheries catches potential, by target fishing gears, under different climate scenarios throughout the 21st century. We show that the future Mediterranean maximum catch potential may decrease considerably by the end of the century under high emission scenarios in South Eastern Mediterranean countries. These projected decreases range between -20 to -75 % for catch by pelagic trawl and seine, -50 to -75 % for fixed nets and traps and exceed -75 % for benthic trawl. In contrast, fixed nets and traps, and benthic trawl fisheries may experience an increase in their catch potential in the North and Celtic seas, while future catches by pelagic trawl and seine may decrease in the same areas. We show that a high emission scenario may considerably amplify the future redistribution of fisheries catch potential across European Seas, thus highlighting the need to limit global warming. Our projections at the manageable scale of EEZ and the quantification of climate -induced impacts on a large part of the Mediterranean and European fisheries is therefore a first, and considerable step toward the development of climate mitigation and adaptations strategies for the fisheries sector.

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