Climate-induced increases in micronutrient availability for coral reef fisheries.

Autor:	Robinson JPW; Lancaster Environment Centre, Lancaster University, Lancaster LA1 4YQ, UK., Maire E; Lancaster Environment Centre, Lancaster University, Lancaster LA1 4YQ, UK., Bodin N; Seychelles Fishing Authority, Fishing Port, Mahe, Seychelles.; Sustainable Ocean Seychelles, Mahe, Seychelles., Hempson TN; ARC Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, QLD 4811, Australia.; Oceans Without Borders, Vamizi Island, Cabo Delgado, Mozambique., Graham NAJ; Lancaster Environment Centre, Lancaster University, Lancaster LA1 4YQ, UK., Wilson SK; Department of Biodiversity, Conservation and Attractions: Marine Science Program, Kensington, WA 6151, Australia.; Oceans Institute, University of Western Australia, Crawley, WA 6009, Australia., MacNeil MA; Department of Biology, Dalhousie University, Halifax, NS B3H 4R2, Canada., Hicks CC; Lancaster Environment Centre, Lancaster University, Lancaster LA1 4YQ, UK.
Jazyk:	angličtina
Zdroj:	One earth (Cambridge, Mass.) [One Earth] 2022 Jan 21; Vol. 5 (1), pp. 98-108.
DOI:	10.1016/j.oneear.2021.12.005
Abstrakt:	Climate change is transforming coral reefs, threatening supply of essential dietary micronutrients from small-scale fisheries to tropical coastal communities. Yet the nutritional value of reef fisheries and climate impacts on micronutrient availability remain unclear, hindering efforts to sustain food and nutrition security. Here, we measure nutrient content in coral reef fishes in Seychelles and show that reef fish are important sources of selenium and zinc and contain levels of calcium, iron, and omega-3 fatty acids comparable with other animal-source foods. Using experimental fishing, we demonstrate that iron and zinc are enriched in fishes caught on regime-shifted macroalgal habitats, whereas selenium and omega-3 varied among species. We find substantial increases in nutrients available to fisheries over two decades following coral bleaching, particularly for iron and zinc after macroalgal regime shifts. Our findings indicate that, if managed sustainably, coral reef fisheries could remain important micronutrient sources along tropical coastlines despite escalating climate impacts. Competing Interests: The authors declare no competing interests. (© 2021 The Authors.)
Databáze:	MEDLINE
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