Fishing effort alternatives for the management of demersal fisheries in the western Mediterranean

Management alternatives based on fishing effort for the demersal fisheries in the western Mediterranean were tested, with the novelty of examining management alternatives at temporal scales smaller than one year. Nine scenarios were considered on the basis of input control: decrease in the number of...

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Main Authors: Paloma Martín, Francesc Maynou, Mariona Garriga-Panisello, John Ramírez, Laura Recasens
Format: Article
Language:English
Published: Consejo Superior de Investigaciones Científicas 2019-12-01
Series:Scientia Marina
Subjects:
Online Access:http://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/1826
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spelling doaj-86022795f52441afad42a5420b8989122021-05-05T13:49:32ZengConsejo Superior de Investigaciones CientíficasScientia Marina0214-83581886-81342019-12-0183429330410.3989/scimar.04937.29B1790Fishing effort alternatives for the management of demersal fisheries in the western MediterraneanPaloma Martín0https://orcid.org/0000-0002-5665-2695Francesc Maynou1https://orcid.org/0000-0001-7200-6485Mariona Garriga-Panisello2https://orcid.org/0000-0002-1869-3074John Ramírez3https://orcid.org/0000-0002-0262-8200Laura Recasens4https://orcid.org/0000-0002-2821-1796Institut de Ciències del Mar, CSICInstitut de Ciències del Mar, CSICInstitut de Ciències del Mar, CSICInstitut de Ciències del Mar, CSICInstitut de Ciències del Mar, CSICManagement alternatives based on fishing effort for the demersal fisheries in the western Mediterranean were tested, with the novelty of examining management alternatives at temporal scales smaller than one year. Nine scenarios were considered on the basis of input control: decrease in the number of fishing days, which may correspond to cessation of activity of vessels or lower activity of the fleet; and implementation of seasonal closures of one-, two- and three-month duration in winter, spring, summer and autumn. The approach is based on a multispecies and multigear bioeconomic model. We selected a total of ten species (Merluccius merluccius, Nephrops norvegicus, Mullus barbatus, Mullus surmuletus, Parapenaeus longirostris, Lophius piscatorius, Lophius budegassa, Aristeus antennatus, Phycis blennoides and Lepidorhombus boscii) and seven fleets, defined as a combination of fishing gear (bottom trawl, entangling nets and longline) and fleet segment. A similar decrease in F is achieved with a 20% reduction of fishing effort (days) or with two- to three-month closures. Maximum Sustainable Yield (MSY) for all stocks would be achieved only with such a drastic reduction of fishing effort ( > 80% of fishing days by the end of the five years of simulation) that, in practice, its application can be considered unrealistic, since it would represent a very low activity of all fishing fleets over the year.http://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/1826demersal fisheriesfisheries managementfishing effortwestern mediterranean
collection DOAJ
language English
format Article
sources DOAJ
author Paloma Martín
Francesc Maynou
Mariona Garriga-Panisello
John Ramírez
Laura Recasens
spellingShingle Paloma Martín
Francesc Maynou
Mariona Garriga-Panisello
John Ramírez
Laura Recasens
Fishing effort alternatives for the management of demersal fisheries in the western Mediterranean
Scientia Marina
demersal fisheries
fisheries management
fishing effort
western mediterranean
author_facet Paloma Martín
Francesc Maynou
Mariona Garriga-Panisello
John Ramírez
Laura Recasens
author_sort Paloma Martín
title Fishing effort alternatives for the management of demersal fisheries in the western Mediterranean
title_short Fishing effort alternatives for the management of demersal fisheries in the western Mediterranean
title_full Fishing effort alternatives for the management of demersal fisheries in the western Mediterranean
title_fullStr Fishing effort alternatives for the management of demersal fisheries in the western Mediterranean
title_full_unstemmed Fishing effort alternatives for the management of demersal fisheries in the western Mediterranean
title_sort fishing effort alternatives for the management of demersal fisheries in the western mediterranean
publisher Consejo Superior de Investigaciones Científicas
series Scientia Marina
issn 0214-8358
1886-8134
publishDate 2019-12-01
description Management alternatives based on fishing effort for the demersal fisheries in the western Mediterranean were tested, with the novelty of examining management alternatives at temporal scales smaller than one year. Nine scenarios were considered on the basis of input control: decrease in the number of fishing days, which may correspond to cessation of activity of vessels or lower activity of the fleet; and implementation of seasonal closures of one-, two- and three-month duration in winter, spring, summer and autumn. The approach is based on a multispecies and multigear bioeconomic model. We selected a total of ten species (Merluccius merluccius, Nephrops norvegicus, Mullus barbatus, Mullus surmuletus, Parapenaeus longirostris, Lophius piscatorius, Lophius budegassa, Aristeus antennatus, Phycis blennoides and Lepidorhombus boscii) and seven fleets, defined as a combination of fishing gear (bottom trawl, entangling nets and longline) and fleet segment. A similar decrease in F is achieved with a 20% reduction of fishing effort (days) or with two- to three-month closures. Maximum Sustainable Yield (MSY) for all stocks would be achieved only with such a drastic reduction of fishing effort ( > 80% of fishing days by the end of the five years of simulation) that, in practice, its application can be considered unrealistic, since it would represent a very low activity of all fishing fleets over the year.
topic demersal fisheries
fisheries management
fishing effort
western mediterranean
url http://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/1826
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AT marionagarrigapanisello fishingeffortalternativesforthemanagementofdemersalfisheriesinthewesternmediterranean
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