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Diversification insulates fisher catch and revenue in heavily exploited tropical fisheries

Declines in commercial landings and increases in fishing fleet power have raised concerns over the continued provisioning of nutritional and economic services by tropical wild fisheries. Yet, because tropical fisheries are often data-poor, mechanisms that might buffer fishers to declines are not und...

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Autores principales: Robinson, James P. W., Robinson, Jan, Gerry, Calvin, Govinden, Rodney, Freshwater, Cameron, Graham, Nicholas A. J.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Association for the Advancement of Science 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7034998/
https://www.ncbi.nlm.nih.gov/pubmed/32128420
http://dx.doi.org/10.1126/sciadv.aaz0587
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author Robinson, James P. W.
Robinson, Jan
Gerry, Calvin
Govinden, Rodney
Freshwater, Cameron
Graham, Nicholas A. J.
author_facet Robinson, James P. W.
Robinson, Jan
Gerry, Calvin
Govinden, Rodney
Freshwater, Cameron
Graham, Nicholas A. J.
author_sort Robinson, James P. W.
collection PubMed
description Declines in commercial landings and increases in fishing fleet power have raised concerns over the continued provisioning of nutritional and economic services by tropical wild fisheries. Yet, because tropical fisheries are often data-poor, mechanisms that might buffer fishers to declines are not understood. This data scarcity undermines fisheries management, making tropical fishing livelihoods particularly vulnerable to changes in marine resources. We use high-resolution fisheries data from Seychelles to understand how fishing strategy (catch diversification) influences catch rates and revenues of individual fishing vessels. We show that average catch weight decreased by 65% over 27 years, with declines in all nine species groups coinciding with increases in fishing effort. However, for individual vessels, catch diversity was associated with larger catches and higher fishing revenues and with slower catch declines from 1990 to 2016. Management strategies should maximize catch diversity in data-poor tropical fisheries to help secure nutritional security while protecting fishing livelihoods.
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spelling pubmed-70349982020-03-03 Diversification insulates fisher catch and revenue in heavily exploited tropical fisheries Robinson, James P. W. Robinson, Jan Gerry, Calvin Govinden, Rodney Freshwater, Cameron Graham, Nicholas A. J. Sci Adv Research Articles Declines in commercial landings and increases in fishing fleet power have raised concerns over the continued provisioning of nutritional and economic services by tropical wild fisheries. Yet, because tropical fisheries are often data-poor, mechanisms that might buffer fishers to declines are not understood. This data scarcity undermines fisheries management, making tropical fishing livelihoods particularly vulnerable to changes in marine resources. We use high-resolution fisheries data from Seychelles to understand how fishing strategy (catch diversification) influences catch rates and revenues of individual fishing vessels. We show that average catch weight decreased by 65% over 27 years, with declines in all nine species groups coinciding with increases in fishing effort. However, for individual vessels, catch diversity was associated with larger catches and higher fishing revenues and with slower catch declines from 1990 to 2016. Management strategies should maximize catch diversity in data-poor tropical fisheries to help secure nutritional security while protecting fishing livelihoods. American Association for the Advancement of Science 2020-02-21 /pmc/articles/PMC7034998/ /pubmed/32128420 http://dx.doi.org/10.1126/sciadv.aaz0587 Text en Copyright © 2020 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC). http://creativecommons.org/licenses/by-nc/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license (http://creativecommons.org/licenses/by-nc/4.0/) , which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited.
spellingShingle Research Articles
Robinson, James P. W.
Robinson, Jan
Gerry, Calvin
Govinden, Rodney
Freshwater, Cameron
Graham, Nicholas A. J.
Diversification insulates fisher catch and revenue in heavily exploited tropical fisheries
title Diversification insulates fisher catch and revenue in heavily exploited tropical fisheries
title_full Diversification insulates fisher catch and revenue in heavily exploited tropical fisheries
title_fullStr Diversification insulates fisher catch and revenue in heavily exploited tropical fisheries
title_full_unstemmed Diversification insulates fisher catch and revenue in heavily exploited tropical fisheries
title_short Diversification insulates fisher catch and revenue in heavily exploited tropical fisheries
title_sort diversification insulates fisher catch and revenue in heavily exploited tropical fisheries
topic Research Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7034998/
https://www.ncbi.nlm.nih.gov/pubmed/32128420
http://dx.doi.org/10.1126/sciadv.aaz0587
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