The use of Depletion methods to assess Mediterranean cephalopod stocks under the current EU Data Collection Framework

Fuelled by the increasing importance of cephalopod fisheries in Europe, scientists and stakeholders have demanded their assessment and management. However, little has been done to improve the data collection under the EU Data Collection Framework (DCF) in order to analyse cephalopod populations. Whi...

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Detalhes bibliográficos
Autores: Keller, Stefanie, Robin, Jean-Paul, Valls, Maria, Gras, Michaël, Cabanellas-Reboredo, Miguel, Quetglas, Antoni
Formato: artículo
Fecha de publicación:2015
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/133372
Acesso em linha:http://hdl.handle.net/10261/133372
Access Level:acceso abierto
Palavra-chave:Management
Data collection framework
Depletion methods
Mediterranean
Assessment
Cephalopod
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spelling The use of Depletion methods to assess Mediterranean cephalopod stocks under the current EU Data Collection FrameworkKeller, StefanieRobin, Jean-PaulValls, MariaGras, MichaëlCabanellas-Reboredo, MiguelQuetglas, AntoniManagementData collection frameworkDepletion methodsMediterraneanAssessmentCephalopodFuelled by the increasing importance of cephalopod fisheries in Europe, scientists and stakeholders have demanded their assessment and management. However, little has been done to improve the data collection under the EU Data Collection Framework (DCF) in order to analyse cephalopod populations. While the DCF allows member states to design flexible national sampling programmes, it establishes the minimum data requirements (MDR) each state is obliged to fulfil. This study was performed to investigate whether such MDR currently set by the DCF allow the application of depletion models (DMs) to assess European cephalopod stocks. Squid and cuttlefish fisheries from the western Mediterranean were used as a case study. This study sheds doubt on the suitability of the MDR to properly assess and manage cephalopod stocks by means of DMs. Owing to the high plasticity of life-history traits in cephalopod populations, biological parameters should be estimated during the actual depletion period of the fished stocks, rather than performing triennial sampling as established by the DCF. In order to accurately track the depletion event, the rapid growth rates of cephalopods implies that their populations should be monitored at shorter time scales (ideally weekly or biweekly) instead of quarterly as specified by the DCF. These measures would not require additional resources of the ongoing DCF but a redistribution of sampling efforts during the depletion period. Such changes in the sampling scheme could be designed and undertaken by the member states or directly integrated as requirements.This study was performed under the Data Collection Framework (cofunded by the EU and the Spanish Institute of Oceanography, IEO) and the CONFLICT project (CGL2008-958; funded by the Spanish Ministry of Science and Innovation). SK was financed by an IEO-FPI grant (2011/11)Peer ReviewedHellenic Centre for Marine ResearchEuropean CommissionMinisterio de Ciencia e Innovación (España)CSIC - Instituto Español de Oceanografía (IEO)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2016201620152016info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/133372reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)InglésSíinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1333722026-05-22T06:33:51Z
dc.title.none.fl_str_mv The use of Depletion methods to assess Mediterranean cephalopod stocks under the current EU Data Collection Framework
title The use of Depletion methods to assess Mediterranean cephalopod stocks under the current EU Data Collection Framework
spellingShingle The use of Depletion methods to assess Mediterranean cephalopod stocks under the current EU Data Collection Framework
Keller, Stefanie
Management
Data collection framework
Depletion methods
Mediterranean
Assessment
Cephalopod
title_short The use of Depletion methods to assess Mediterranean cephalopod stocks under the current EU Data Collection Framework
title_full The use of Depletion methods to assess Mediterranean cephalopod stocks under the current EU Data Collection Framework
title_fullStr The use of Depletion methods to assess Mediterranean cephalopod stocks under the current EU Data Collection Framework
title_full_unstemmed The use of Depletion methods to assess Mediterranean cephalopod stocks under the current EU Data Collection Framework
title_sort The use of Depletion methods to assess Mediterranean cephalopod stocks under the current EU Data Collection Framework
dc.creator.none.fl_str_mv Keller, Stefanie
Robin, Jean-Paul
Valls, Maria
Gras, Michaël
Cabanellas-Reboredo, Miguel
Quetglas, Antoni
author Keller, Stefanie
author_facet Keller, Stefanie
Robin, Jean-Paul
Valls, Maria
Gras, Michaël
Cabanellas-Reboredo, Miguel
Quetglas, Antoni
author_role author
author2 Robin, Jean-Paul
Valls, Maria
Gras, Michaël
Cabanellas-Reboredo, Miguel
Quetglas, Antoni
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv European Commission
Ministerio de Ciencia e Innovación (España)
CSIC - Instituto Español de Oceanografía (IEO)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Management
Data collection framework
Depletion methods
Mediterranean
Assessment
Cephalopod
topic Management
Data collection framework
Depletion methods
Mediterranean
Assessment
Cephalopod
description Fuelled by the increasing importance of cephalopod fisheries in Europe, scientists and stakeholders have demanded their assessment and management. However, little has been done to improve the data collection under the EU Data Collection Framework (DCF) in order to analyse cephalopod populations. While the DCF allows member states to design flexible national sampling programmes, it establishes the minimum data requirements (MDR) each state is obliged to fulfil. This study was performed to investigate whether such MDR currently set by the DCF allow the application of depletion models (DMs) to assess European cephalopod stocks. Squid and cuttlefish fisheries from the western Mediterranean were used as a case study. This study sheds doubt on the suitability of the MDR to properly assess and manage cephalopod stocks by means of DMs. Owing to the high plasticity of life-history traits in cephalopod populations, biological parameters should be estimated during the actual depletion period of the fished stocks, rather than performing triennial sampling as established by the DCF. In order to accurately track the depletion event, the rapid growth rates of cephalopods implies that their populations should be monitored at shorter time scales (ideally weekly or biweekly) instead of quarterly as specified by the DCF. These measures would not require additional resources of the ongoing DCF but a redistribution of sampling efforts during the depletion period. Such changes in the sampling scheme could be designed and undertaken by the member states or directly integrated as requirements.
publishDate 2015
dc.date.none.fl_str_mv 2015
2016
2016
2016
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/133372
url http://hdl.handle.net/10261/133372
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Hellenic Centre for Marine Research
publisher.none.fl_str_mv Hellenic Centre for Marine Research
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
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