An MPA Design Approach to Benefit Fisheries: Maximising Larval Export and Minimising Redundancy

In the design of marine protected areas (MPAs), tailoring reserve placement to facilitate larval export beyond reserve boundaries may support fished populations and fisheries through recruitment subsidies. Intuitively, capturing such connectivity could be purely based on optimising larval dispersal...

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Autores principales:	Colm Tong, Karlo Hock, Nils C. Krueck, Vladimir Tyazhelnikov, Peter J. Mumby
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	optimization algorithm Caribbean connectivity design complementarity export Biology (General) QH301-705.5
Acceso en línea:	https://doaj.org/article/08df161d31a84ca982585a6b1982c578
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spelling	oai:doaj.org-article:08df161d31a84ca982585a6b1982c5782021-11-25T17:22:54ZAn MPA Design Approach to Benefit Fisheries: Maximising Larval Export and Minimising Redundancy10.3390/d131105861424-2818https://doaj.org/article/08df161d31a84ca982585a6b1982c5782021-11-01T00:00:00Zhttps://www.mdpi.com/1424-2818/13/11/586https://doaj.org/toc/1424-2818In the design of marine protected areas (MPAs), tailoring reserve placement to facilitate larval export beyond reserve boundaries may support fished populations and fisheries through recruitment subsidies. Intuitively, capturing such connectivity could be purely based on optimising larval dispersal metrics such as export strength. However, this can lead to inefficient or redundant larval connectivity, as the subset of sites with the best connectivity metrics might share many of the same connections, making them, collectively, poor MPA candidates to provide recruitment subsidies to unprotected sites. We propose a simple, dynamic algorithm for reserve placement optimisation designed to select MPAs sequentially, maximising larval export to the overall network, whilst accounting for redundancy in supply from multiple sources. When applied to four regions in the Caribbean, the algorithm consistently outperformed approaches that did not consider supply redundancy, leading to, on average, 20% greater fished biomass in a simulated model. Improvements were most apparent in dense, strongly connected systems such as the Bahamas. Here, MPA placement without redundancy considerations produced fishery benefits worse than random MPA design. Our findings highlight the importance of considering redundancy in MPA design, and offer a novel, simple approach to improving MPA design for achieving fishery objectives.Colm TongKarlo HockNils C. KrueckVladimir TyazhelnikovPeter J. MumbyMDPI AGarticleoptimization algorithmCaribbeanconnectivitydesigncomplementarityexportBiology (General)QH301-705.5ENDiversity, Vol 13, Iss 586, p 586 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	optimization algorithm Caribbean connectivity design complementarity export Biology (General) QH301-705.5
spellingShingle	optimization algorithm Caribbean connectivity design complementarity export Biology (General) QH301-705.5 Colm Tong Karlo Hock Nils C. Krueck Vladimir Tyazhelnikov Peter J. Mumby An MPA Design Approach to Benefit Fisheries: Maximising Larval Export and Minimising Redundancy
description	In the design of marine protected areas (MPAs), tailoring reserve placement to facilitate larval export beyond reserve boundaries may support fished populations and fisheries through recruitment subsidies. Intuitively, capturing such connectivity could be purely based on optimising larval dispersal metrics such as export strength. However, this can lead to inefficient or redundant larval connectivity, as the subset of sites with the best connectivity metrics might share many of the same connections, making them, collectively, poor MPA candidates to provide recruitment subsidies to unprotected sites. We propose a simple, dynamic algorithm for reserve placement optimisation designed to select MPAs sequentially, maximising larval export to the overall network, whilst accounting for redundancy in supply from multiple sources. When applied to four regions in the Caribbean, the algorithm consistently outperformed approaches that did not consider supply redundancy, leading to, on average, 20% greater fished biomass in a simulated model. Improvements were most apparent in dense, strongly connected systems such as the Bahamas. Here, MPA placement without redundancy considerations produced fishery benefits worse than random MPA design. Our findings highlight the importance of considering redundancy in MPA design, and offer a novel, simple approach to improving MPA design for achieving fishery objectives.
format	article
author	Colm Tong Karlo Hock Nils C. Krueck Vladimir Tyazhelnikov Peter J. Mumby
author_facet	Colm Tong Karlo Hock Nils C. Krueck Vladimir Tyazhelnikov Peter J. Mumby
author_sort	Colm Tong
title	An MPA Design Approach to Benefit Fisheries: Maximising Larval Export and Minimising Redundancy
title_short	An MPA Design Approach to Benefit Fisheries: Maximising Larval Export and Minimising Redundancy
title_full	An MPA Design Approach to Benefit Fisheries: Maximising Larval Export and Minimising Redundancy
title_fullStr	An MPA Design Approach to Benefit Fisheries: Maximising Larval Export and Minimising Redundancy
title_full_unstemmed	An MPA Design Approach to Benefit Fisheries: Maximising Larval Export and Minimising Redundancy
title_sort	mpa design approach to benefit fisheries: maximising larval export and minimising redundancy
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/08df161d31a84ca982585a6b1982c578
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An MPA Design Approach to Benefit Fisheries: Maximising Larval Export and Minimising Redundancy

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