Alteration of coastal productivity and artisanal fisheries interact to affect a marine food web

Abstract Top-down and bottom-up forces determine ecosystem function and dynamics. Fisheries as a top-down force can shorten and destabilize food webs, while effects driven by climate change can alter the bottom-up forces of primary productivity. We assessed the response of a highly-resolved intertid...

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Autores principales:	M. Isidora Ávila-Thieme, Derek Corcoran, Alejandro Pérez-Matus, Evie A. Wieters, Sergio A. Navarrete, Pablo A. Marquet, Fernanda S. Valdovinos
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/4f60399446b84aabb0e058e20d479fca
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spelling	oai:doaj.org-article:4f60399446b84aabb0e058e20d479fca2021-12-02T13:51:16ZAlteration of coastal productivity and artisanal fisheries interact to affect a marine food web10.1038/s41598-021-81392-42045-2322https://doaj.org/article/4f60399446b84aabb0e058e20d479fca2021-01-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-81392-4https://doaj.org/toc/2045-2322Abstract Top-down and bottom-up forces determine ecosystem function and dynamics. Fisheries as a top-down force can shorten and destabilize food webs, while effects driven by climate change can alter the bottom-up forces of primary productivity. We assessed the response of a highly-resolved intertidal food web to these two global change drivers, using network analysis and bioenergetic modelling. We quantified the relative importance of artisanal fisheries as another predator species, and evaluated the independent and combined effects of fisheries and changes in plankton productivity on food web dynamics. The food web was robust to the loss of all harvested species but sensitive to the decline in plankton productivity. Interestingly, fisheries dampened the negative impacts of decreasing plankton productivity on non-harvested species by reducing the predation pressure of harvested consumers on non-harvested resources, and reducing the interspecific competition between harvested and non-harvested basal species. In contrast, the decline in plankton productivity increased the sensitivity of harvested species to fishing by reducing the total productivity of the food web. Our results show that strategies for new scenarios caused by climate change are needed to protect marine ecosystems and the wellbeing of local communities dependent on their resources.M. Isidora Ávila-ThiemeDerek CorcoranAlejandro Pérez-MatusEvie A. WietersSergio A. NavarretePablo A. MarquetFernanda S. ValdovinosNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-14 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q M. Isidora Ávila-Thieme Derek Corcoran Alejandro Pérez-Matus Evie A. Wieters Sergio A. Navarrete Pablo A. Marquet Fernanda S. Valdovinos Alteration of coastal productivity and artisanal fisheries interact to affect a marine food web
description	Abstract Top-down and bottom-up forces determine ecosystem function and dynamics. Fisheries as a top-down force can shorten and destabilize food webs, while effects driven by climate change can alter the bottom-up forces of primary productivity. We assessed the response of a highly-resolved intertidal food web to these two global change drivers, using network analysis and bioenergetic modelling. We quantified the relative importance of artisanal fisheries as another predator species, and evaluated the independent and combined effects of fisheries and changes in plankton productivity on food web dynamics. The food web was robust to the loss of all harvested species but sensitive to the decline in plankton productivity. Interestingly, fisheries dampened the negative impacts of decreasing plankton productivity on non-harvested species by reducing the predation pressure of harvested consumers on non-harvested resources, and reducing the interspecific competition between harvested and non-harvested basal species. In contrast, the decline in plankton productivity increased the sensitivity of harvested species to fishing by reducing the total productivity of the food web. Our results show that strategies for new scenarios caused by climate change are needed to protect marine ecosystems and the wellbeing of local communities dependent on their resources.
format	article
author	M. Isidora Ávila-Thieme Derek Corcoran Alejandro Pérez-Matus Evie A. Wieters Sergio A. Navarrete Pablo A. Marquet Fernanda S. Valdovinos
author_facet	M. Isidora Ávila-Thieme Derek Corcoran Alejandro Pérez-Matus Evie A. Wieters Sergio A. Navarrete Pablo A. Marquet Fernanda S. Valdovinos
author_sort	M. Isidora Ávila-Thieme
title	Alteration of coastal productivity and artisanal fisheries interact to affect a marine food web
title_short	Alteration of coastal productivity and artisanal fisheries interact to affect a marine food web
title_full	Alteration of coastal productivity and artisanal fisheries interact to affect a marine food web
title_fullStr	Alteration of coastal productivity and artisanal fisheries interact to affect a marine food web
title_full_unstemmed	Alteration of coastal productivity and artisanal fisheries interact to affect a marine food web
title_sort	alteration of coastal productivity and artisanal fisheries interact to affect a marine food web
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/4f60399446b84aabb0e058e20d479fca
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Alteration of coastal productivity and artisanal fisheries interact to affect a marine food web

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