Old Info for a New Fisheries Policy: Discard Ratios and Lengths at Discarding in EU Mediterranean Bottom Trawl Fisheries

Discarding is considered globally among the most important issues for fisheries management. The recent reform of the Common Fisheries Policy establishes a landing obligation for the species which are subject to catch limits and, in the Mediterranean, for species which are subject to Minimum Conserva...

Descripción completa

Detalles Bibliográficos
Autores: Tsagarakis, Konstantinos, Carbonell, Ana, Brčić, Jure, Bellido, José M., Carbonara, Pierluigi, Casciaro, Loredana, Edridge, Alex, García-Jiménez, María Teresa, González-Aguilar, María, Krstulović-Šifner, Svjetlana, Machias, Athanassios, Notti, Emilio, Papantoniou, Georgia, Sala, Antonello, Škeljo, Frane, Vitale, Sergio, Vassilopoulou, Vassiliki
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2017
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/323801
Acceso en línea:http://hdl.handle.net/10261/323801
Access Level:acceso abierto
Palabra clave:Centro Oceanográfico de Baleares
discarding behavior
Pesquerías
multi-species fishery
trawling
unwanted catches
Minimum Conservation
Reference Size
landing obligation
living resources
marine fisheries
discards
By catch
id ES_921e2c2cebe35e1c567f61b9541e620a
oai_identifier_str oai:digital.csic.es:10261/323801
network_acronym_str ES
network_name_str España
repository_id_str
spelling Old Info for a New Fisheries Policy: Discard Ratios and Lengths at Discarding in EU Mediterranean Bottom Trawl FisheriesTsagarakis, KonstantinosCarbonell, AnaBrčić, JureBellido, José M.Carbonara, PierluigiCasciaro, LoredanaEdridge, AlexGarcía-Jiménez, María TeresaGonzález-Aguilar, MaríaKrstulović-Šifner, SvjetlanaMachias, AthanassiosNotti, EmilioPapantoniou, GeorgiaSala, AntonelloŠkeljo, FraneVitale, SergioVassilopoulou, VassilikiCentro Oceanográfico de Balearesdiscarding behaviorPesqueríasmulti-species fisherytrawlingunwanted catchesMinimum ConservationReference Sizelanding obligationliving resourcesmarine fisheriesdiscardsBy catchDiscarding is considered globally among the most important issues for fisheries management. The recent reform of the Common Fisheries Policy establishes a landing obligation for the species which are subject to catch limits and, in the Mediterranean, for species which are subject to Minimum Conservation Reference Size (MCRS) as defined in Annex III to Regulation (EC) No 1967/2006. Additionally, several other initiatives aim to reduce unwanted catches of target and bycatch species, including species of conservation concern. This raises the need to study discarding patterns of (mainly) these species. In this work we collated a considerable amount of historical published information on discard ratios and lengths at discarding for species caught in EU Mediterranean bottom trawl fisheries. The main aim was to summarize the available historical records and make them more accessible for scientific and managerial needs, as well as to try identifying patterns in discarding. We show discard ratios and lengths at which 50% of the individuals were discarded (L50) for 15 species (9 bony fishes, three crustacean decapods, and three elasmobranchs). Discard ratios were usually low for target species such as hake, red mullets and highly commercial shrimps and exemptions from the landing obligation under the de minimis rules could be sought in several cases. Discard ratios were usually higher for commercial bycatch species. Discarding is affected by a combination of factors and for a given species, especially for non-target ones, discards are likely to fluctuate within a fishery, across seasons, years, and regions. For most species considered, L50s were lower than the MCRS (when in place) and length at first maturity. L50s of target species, such as hake, were very small due to the existence of market demands for small sized individuals. However, for species of low demand, like horse mackerels, a higher retention size was observed, often exceeding MCRS. Lengths at discarding are affected by legal provisions, market demands but also by biological, population, and ecological traits. Understanding the factors that affect discarding constitutes the starting point for designing mitigation measures and management plans to reduce discards and improve the sustainability of the stocksSICardinale, M. (Massimiliano)202320232017info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/323801reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE#DG MARE/2012/24-Lot 2 SI2.672370Centro Oceanográfico de Balearesinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3238012026-05-22T06:33:51Z
dc.title.none.fl_str_mv Old Info for a New Fisheries Policy: Discard Ratios and Lengths at Discarding in EU Mediterranean Bottom Trawl Fisheries
title Old Info for a New Fisheries Policy: Discard Ratios and Lengths at Discarding in EU Mediterranean Bottom Trawl Fisheries
spellingShingle Old Info for a New Fisheries Policy: Discard Ratios and Lengths at Discarding in EU Mediterranean Bottom Trawl Fisheries
Tsagarakis, Konstantinos
Centro Oceanográfico de Baleares
discarding behavior
Pesquerías
multi-species fishery
trawling
unwanted catches
Minimum Conservation
Reference Size
landing obligation
living resources
marine fisheries
discards
By catch
title_short Old Info for a New Fisheries Policy: Discard Ratios and Lengths at Discarding in EU Mediterranean Bottom Trawl Fisheries
title_full Old Info for a New Fisheries Policy: Discard Ratios and Lengths at Discarding in EU Mediterranean Bottom Trawl Fisheries
title_fullStr Old Info for a New Fisheries Policy: Discard Ratios and Lengths at Discarding in EU Mediterranean Bottom Trawl Fisheries
title_full_unstemmed Old Info for a New Fisheries Policy: Discard Ratios and Lengths at Discarding in EU Mediterranean Bottom Trawl Fisheries
title_sort Old Info for a New Fisheries Policy: Discard Ratios and Lengths at Discarding in EU Mediterranean Bottom Trawl Fisheries
dc.creator.none.fl_str_mv Tsagarakis, Konstantinos
Carbonell, Ana
Brčić, Jure
Bellido, José M.
Carbonara, Pierluigi
Casciaro, Loredana
Edridge, Alex
García-Jiménez, María Teresa
González-Aguilar, María
Krstulović-Šifner, Svjetlana
Machias, Athanassios
Notti, Emilio
Papantoniou, Georgia
Sala, Antonello
Škeljo, Frane
Vitale, Sergio
Vassilopoulou, Vassiliki
author Tsagarakis, Konstantinos
author_facet Tsagarakis, Konstantinos
Carbonell, Ana
Brčić, Jure
Bellido, José M.
Carbonara, Pierluigi
Casciaro, Loredana
Edridge, Alex
García-Jiménez, María Teresa
González-Aguilar, María
Krstulović-Šifner, Svjetlana
Machias, Athanassios
Notti, Emilio
Papantoniou, Georgia
Sala, Antonello
Škeljo, Frane
Vitale, Sergio
Vassilopoulou, Vassiliki
author_role author
author2 Carbonell, Ana
Brčić, Jure
Bellido, José M.
Carbonara, Pierluigi
Casciaro, Loredana
Edridge, Alex
García-Jiménez, María Teresa
González-Aguilar, María
Krstulović-Šifner, Svjetlana
Machias, Athanassios
Notti, Emilio
Papantoniou, Georgia
Sala, Antonello
Škeljo, Frane
Vitale, Sergio
Vassilopoulou, Vassiliki
author2_role author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Cardinale, M. (Massimiliano)
dc.subject.none.fl_str_mv Centro Oceanográfico de Baleares
discarding behavior
Pesquerías
multi-species fishery
trawling
unwanted catches
Minimum Conservation
Reference Size
landing obligation
living resources
marine fisheries
discards
By catch
topic Centro Oceanográfico de Baleares
discarding behavior
Pesquerías
multi-species fishery
trawling
unwanted catches
Minimum Conservation
Reference Size
landing obligation
living resources
marine fisheries
discards
By catch
description Discarding is considered globally among the most important issues for fisheries management. The recent reform of the Common Fisheries Policy establishes a landing obligation for the species which are subject to catch limits and, in the Mediterranean, for species which are subject to Minimum Conservation Reference Size (MCRS) as defined in Annex III to Regulation (EC) No 1967/2006. Additionally, several other initiatives aim to reduce unwanted catches of target and bycatch species, including species of conservation concern. This raises the need to study discarding patterns of (mainly) these species. In this work we collated a considerable amount of historical published information on discard ratios and lengths at discarding for species caught in EU Mediterranean bottom trawl fisheries. The main aim was to summarize the available historical records and make them more accessible for scientific and managerial needs, as well as to try identifying patterns in discarding. We show discard ratios and lengths at which 50% of the individuals were discarded (L50) for 15 species (9 bony fishes, three crustacean decapods, and three elasmobranchs). Discard ratios were usually low for target species such as hake, red mullets and highly commercial shrimps and exemptions from the landing obligation under the de minimis rules could be sought in several cases. Discard ratios were usually higher for commercial bycatch species. Discarding is affected by a combination of factors and for a given species, especially for non-target ones, discards are likely to fluctuate within a fishery, across seasons, years, and regions. For most species considered, L50s were lower than the MCRS (when in place) and length at first maturity. L50s of target species, such as hake, were very small due to the existence of market demands for small sized individuals. However, for species of low demand, like horse mackerels, a higher retention size was observed, often exceeding MCRS. Lengths at discarding are affected by legal provisions, market demands but also by biological, population, and ecological traits. Understanding the factors that affect discarding constitutes the starting point for designing mitigation measures and management plans to reduce discards and improve the sustainability of the stocks
publishDate 2017
dc.date.none.fl_str_mv 2017
2023
2023
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/323801
url http://hdl.handle.net/10261/323801
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
DG MARE/2012/24-Lot 2 SI2.672370
Centro Oceanográfico de Baleares
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869413445480218624
score 15,812429

Similares en LA Referencia