Assessment of harbour porpoise bycatch along the Portuguese and Galician Coast: insights from strandings over two decades

Detalhes bibliográficos
Autor(a) principal: Torres-Pereira, Andreia
Data de Publicação: 2023
Outros Autores: Araújo, Hélder, Monteiro, Silvia Silva, Ferreira, Marisa, Bastos-Santos, Jorge, Sá, Sara, Nicolau, Lídia, Marçalo, Ana, Marques, Carina, Tavares, Ana Sofia, De Bonis, Myriam, Covelo, Pablo, Martínez-Cedeira, José, López, Alfredo, Sequeira, Marina, Vingada, José, Eira, Catarina
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.1/19976
Resumo: The Iberian harbour porpoise population is small and fisheries bycatch has been described as one of its most important threats. Data on harbour porpoise strandings collected by the Portuguese and Galician stranding networks between 2000 and 2020 are indicative of a recent mortality increase in the western Iberian coast (particularly in northern Portugal). Overall, in Portugal and Galicia, individuals stranded due to confirmed fishery interaction represented 46.98% of all analysed porpoises, and individuals stranded due to probable fishery interaction represented another 10.99% of all analysed porpoises. Considering the Portuguese annual abundance estimates available between 2011 and 2015, it was possible to calculate that an annual average of 207 individuals was removed from the population in Portuguese waters alone, which largely surpasses the potential biological removal (PBR) estimates (22 porpoises, CI: 12–43) for the same period. These results are conservative and bycatch values from strandings are likely underestimated. A structured action plan accounting for new activities at sea is needed to limit the Iberian porpoise population decline. Meanwhile, there is an urgent need for a fishing effort reorganization to directly decrease porpoise mortality.
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spelling Assessment of harbour porpoise bycatch along the Portuguese and Galician Coast: insights from strandings over two decadesIberian Peninsula; ; ; ; ;Marine mammalsPhocoena phocoenaFisheriesPotential biological removalCritically endangeredThe Iberian harbour porpoise population is small and fisheries bycatch has been described as one of its most important threats. Data on harbour porpoise strandings collected by the Portuguese and Galician stranding networks between 2000 and 2020 are indicative of a recent mortality increase in the western Iberian coast (particularly in northern Portugal). Overall, in Portugal and Galicia, individuals stranded due to confirmed fishery interaction represented 46.98% of all analysed porpoises, and individuals stranded due to probable fishery interaction represented another 10.99% of all analysed porpoises. Considering the Portuguese annual abundance estimates available between 2011 and 2015, it was possible to calculate that an annual average of 207 individuals was removed from the population in Portuguese waters alone, which largely surpasses the potential biological removal (PBR) estimates (22 porpoises, CI: 12–43) for the same period. These results are conservative and bycatch values from strandings are likely underestimated. A structured action plan accounting for new activities at sea is needed to limit the Iberian porpoise population decline. Meanwhile, there is an urgent need for a fishing effort reorganization to directly decrease porpoise mortality.LA/P/0094/2020; LA/P/0101/2020MDPISapientiaTorres-Pereira, AndreiaAraújo, HélderMonteiro, Silvia SilvaFerreira, MarisaBastos-Santos, JorgeSá, SaraNicolau, LídiaMarçalo, AnaMarques, CarinaTavares, Ana SofiaDe Bonis, MyriamCovelo, PabloMartínez-Cedeira, JoséLópez, AlfredoSequeira, MarinaVingada, JoséEira, Catarina2023-09-13T12:00:23Z2023-08-152023-08-25T12:38:11Z2023-08-15T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.1/19976engAnimals 13 (16): 2632 (2023)2076-261510.3390/ani13162632info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-09-20T02:00:32Zoai:sapientia.ualg.pt:10400.1/19976Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:29:42.922454Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Assessment of harbour porpoise bycatch along the Portuguese and Galician Coast: insights from strandings over two decades
title Assessment of harbour porpoise bycatch along the Portuguese and Galician Coast: insights from strandings over two decades
spellingShingle Assessment of harbour porpoise bycatch along the Portuguese and Galician Coast: insights from strandings over two decades
Torres-Pereira, Andreia
Iberian Peninsula; ; ; ; ;
Marine mammals
Phocoena phocoena
Fisheries
Potential biological removal
Critically endangered
title_short Assessment of harbour porpoise bycatch along the Portuguese and Galician Coast: insights from strandings over two decades
title_full Assessment of harbour porpoise bycatch along the Portuguese and Galician Coast: insights from strandings over two decades
title_fullStr Assessment of harbour porpoise bycatch along the Portuguese and Galician Coast: insights from strandings over two decades
title_full_unstemmed Assessment of harbour porpoise bycatch along the Portuguese and Galician Coast: insights from strandings over two decades
title_sort Assessment of harbour porpoise bycatch along the Portuguese and Galician Coast: insights from strandings over two decades
author Torres-Pereira, Andreia
author_facet Torres-Pereira, Andreia
Araújo, Hélder
Monteiro, Silvia Silva
Ferreira, Marisa
Bastos-Santos, Jorge
Sá, Sara
Nicolau, Lídia
Marçalo, Ana
Marques, Carina
Tavares, Ana Sofia
De Bonis, Myriam
Covelo, Pablo
Martínez-Cedeira, José
López, Alfredo
Sequeira, Marina
Vingada, José
Eira, Catarina
author_role author
author2 Araújo, Hélder
Monteiro, Silvia Silva
Ferreira, Marisa
Bastos-Santos, Jorge
Sá, Sara
Nicolau, Lídia
Marçalo, Ana
Marques, Carina
Tavares, Ana Sofia
De Bonis, Myriam
Covelo, Pablo
Martínez-Cedeira, José
López, Alfredo
Sequeira, Marina
Vingada, José
Eira, Catarina
author2_role author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Sapientia
dc.contributor.author.fl_str_mv Torres-Pereira, Andreia
Araújo, Hélder
Monteiro, Silvia Silva
Ferreira, Marisa
Bastos-Santos, Jorge
Sá, Sara
Nicolau, Lídia
Marçalo, Ana
Marques, Carina
Tavares, Ana Sofia
De Bonis, Myriam
Covelo, Pablo
Martínez-Cedeira, José
López, Alfredo
Sequeira, Marina
Vingada, José
Eira, Catarina
dc.subject.por.fl_str_mv Iberian Peninsula; ; ; ; ;
Marine mammals
Phocoena phocoena
Fisheries
Potential biological removal
Critically endangered
topic Iberian Peninsula; ; ; ; ;
Marine mammals
Phocoena phocoena
Fisheries
Potential biological removal
Critically endangered
description The Iberian harbour porpoise population is small and fisheries bycatch has been described as one of its most important threats. Data on harbour porpoise strandings collected by the Portuguese and Galician stranding networks between 2000 and 2020 are indicative of a recent mortality increase in the western Iberian coast (particularly in northern Portugal). Overall, in Portugal and Galicia, individuals stranded due to confirmed fishery interaction represented 46.98% of all analysed porpoises, and individuals stranded due to probable fishery interaction represented another 10.99% of all analysed porpoises. Considering the Portuguese annual abundance estimates available between 2011 and 2015, it was possible to calculate that an annual average of 207 individuals was removed from the population in Portuguese waters alone, which largely surpasses the potential biological removal (PBR) estimates (22 porpoises, CI: 12–43) for the same period. These results are conservative and bycatch values from strandings are likely underestimated. A structured action plan accounting for new activities at sea is needed to limit the Iberian porpoise population decline. Meanwhile, there is an urgent need for a fishing effort reorganization to directly decrease porpoise mortality.
publishDate 2023
dc.date.none.fl_str_mv 2023-09-13T12:00:23Z
2023-08-15
2023-08-25T12:38:11Z
2023-08-15T00:00:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
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status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10400.1/19976
url http://hdl.handle.net/10400.1/19976
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Animals 13 (16): 2632 (2023)
2076-2615
10.3390/ani13162632
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv MDPI
publisher.none.fl_str_mv MDPI
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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