Assessment of harbour porpoise bycatch along the Portuguese and Galician Coast: insights from strandings over two decades
Autor(a) principal: | |
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Data de Publicação: | 2023 |
Outros Autores: | , , , , , , , , , , , , , , , |
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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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 |
format |
article |
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 |
instacron_str |
RCAAP |
institution |
RCAAP |
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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1799133565363945472 |