Résumé
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.
| Langue d'origine | English |
|---|---|
| Pages (de-à) | 98-108 |
| Nombre de pages | 11 |
| Journal | One Earth |
| Volume | 5 |
| Numéro de publication | 1 |
| DOI | |
| Statut de publication | Published - janv. 21 2022 |
Note bibliographique
Funding Information:We are grateful to Seychelles Fishing Authority, particularly to Rodney Govinden, for help with logistics and for providing data on fisheries target species. We thank the SEYFISH team for assistance with fish sampling and sample preparation (Andrew Souffre, Rodney Melanie, Marie-Corinne Balett, Stephanie Marie, Clara Belmont, and Achille Pascal). We also thank the trap fishers who provided their expertise and boat time to collect samples, Paco Bustamante and Carine Churlaud from the LIENSs facility for assisting with trace element analysis, Jan Robinson for advice on target species, Matthew McClean for extracting phylogeny data, and Simon Jennings for providing underwater survey data from 1994. J.P.W.R. was supported by an Early Career Fellowship from the Leverhulme Trust, N.A.J.G. was supported by the Royal Society (grants GH160077 and UF140691) and a Philip Leverhulme Prize from the Leverhulme Trust, and C.C.H. was supported by the European Research Council (grant 759457). We thank Renato Morais and one anonymous reviewer for helpful comments. J.P.W.R. C.C.H. and N.A.J.G. designed the research. N.A.J.G. S.K.W. and J.P.W.R. collected the data, with help from N.B. and T.N.H. J.P.W.R. implemented analyses and wrote the first draft. All authors contributed to the final version. The authors declare no competing interests.
Funding Information:
We are grateful to Seychelles Fishing Authority, particularly to Rodney Govinden, for help with logistics and for providing data on fisheries target species. We thank the SEYFISH team for assistance with fish sampling and sample preparation (Andrew Souffre, Rodney Melanie, Marie-Corinne Balett, Stephanie Marie, Clara Belmont, and Achille Pascal). We also thank the trap fishers who provided their expertise and boat time to collect samples, Paco Bustamante and Carine Churlaud from the LIENSs facility for assisting with trace element analysis, Jan Robinson for advice on target species, Matthew McClean for extracting phylogeny data, and Simon Jennings for providing underwater survey data from 1994. J.P.W.R. was supported by an Early Career Fellowship from the Leverhulme Trust, N.A.J.G. was supported by the Royal Society (grants GH160077 and UF140691 ) and a Philip Leverhulme Prize from the Leverhulme Trust, and C.C.H. was supported by the European Research Council (grant 759457 ). We thank Renato Morais and one anonymous reviewer for helpful comments.
Publisher Copyright:
© 2021 The Authors
ASJC Scopus Subject Areas
- General Environmental Science
- Earth and Planetary Sciences (miscellaneous)
PubMed: MeSH publication types
- Journal Article
ODD de l’ONU
Cette action contribue à la réalisation des objectifs de développement durable suivants
