Assessment of Harbour Porpoise Bycatch along the Portuguese and Galician Coast: Insights from Strandings over Two Decades
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 w...
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2023
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Online Access: | https://doi.org/10.3390/ani13162632 https://doaj.org/article/d36d6802426a4fd39ec1e15a68c51742 |
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ftdoajarticles:oai:doaj.org/article:d36d6802426a4fd39ec1e15a68c51742 2023-09-26T15:18:37+02:00 Assessment of Harbour Porpoise Bycatch along the Portuguese and Galician Coast: Insights from Strandings over Two Decades Andreia Torres-Pereira Hélder Araújo Silvia Silva Monteiro Marisa Ferreira Jorge Bastos-Santos Sara Sá Lídia Nicolau Ana Marçalo Carina Marques Ana Sofia Tavares Myriam De Bonis Pablo Covelo José Martínez-Cedeira Alfredo López Marina Sequeira José Vingada Catarina Eira 2023-08-01T00:00:00Z https://doi.org/10.3390/ani13162632 https://doaj.org/article/d36d6802426a4fd39ec1e15a68c51742 EN eng MDPI AG https://www.mdpi.com/2076-2615/13/16/2632 https://doaj.org/toc/2076-2615 doi:10.3390/ani13162632 2076-2615 https://doaj.org/article/d36d6802426a4fd39ec1e15a68c51742 Animals, Vol 13, Iss 2632, p 2632 (2023) Iberian Peninsula marine mammals Phocoena phocoena fisheries potential biological removal critically endangered Veterinary medicine SF600-1100 Zoology QL1-991 article 2023 ftdoajarticles https://doi.org/10.3390/ani13162632 2023-08-27T00:36:17Z 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. Article in Journal/Newspaper Harbour porpoise Phocoena phocoena Directory of Open Access Journals: DOAJ Articles Animals 13 16 2632 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Iberian Peninsula marine mammals Phocoena phocoena fisheries potential biological removal critically endangered Veterinary medicine SF600-1100 Zoology QL1-991 |
spellingShingle |
Iberian Peninsula marine mammals Phocoena phocoena fisheries potential biological removal critically endangered Veterinary medicine SF600-1100 Zoology QL1-991 Andreia Torres-Pereira Hélder Araújo Silvia Silva Monteiro Marisa Ferreira Jorge Bastos-Santos Sara Sá Lídia Nicolau Ana Marçalo Carina Marques Ana Sofia Tavares Myriam De Bonis Pablo Covelo José Martínez-Cedeira Alfredo López Marina Sequeira José Vingada Catarina Eira Assessment of Harbour Porpoise Bycatch along the Portuguese and Galician Coast: Insights from Strandings over Two Decades |
topic_facet |
Iberian Peninsula marine mammals Phocoena phocoena fisheries potential biological removal critically endangered Veterinary medicine SF600-1100 Zoology QL1-991 |
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. |
format |
Article in Journal/Newspaper |
author |
Andreia Torres-Pereira Hélder Araújo Silvia Silva Monteiro Marisa Ferreira Jorge Bastos-Santos Sara Sá Lídia Nicolau Ana Marçalo Carina Marques Ana Sofia Tavares Myriam De Bonis Pablo Covelo José Martínez-Cedeira Alfredo López Marina Sequeira José Vingada Catarina Eira |
author_facet |
Andreia Torres-Pereira Hélder Araújo Silvia Silva Monteiro Marisa Ferreira Jorge Bastos-Santos Sara Sá Lídia Nicolau Ana Marçalo Carina Marques Ana Sofia Tavares Myriam De Bonis Pablo Covelo José Martínez-Cedeira Alfredo López Marina Sequeira José Vingada Catarina Eira |
author_sort |
Andreia Torres-Pereira |
title |
Assessment of Harbour Porpoise Bycatch along the Portuguese and Galician Coast: Insights from Strandings over Two Decades |
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 |
publisher |
MDPI AG |
publishDate |
2023 |
url |
https://doi.org/10.3390/ani13162632 https://doaj.org/article/d36d6802426a4fd39ec1e15a68c51742 |
genre |
Harbour porpoise Phocoena phocoena |
genre_facet |
Harbour porpoise Phocoena phocoena |
op_source |
Animals, Vol 13, Iss 2632, p 2632 (2023) |
op_relation |
https://www.mdpi.com/2076-2615/13/16/2632 https://doaj.org/toc/2076-2615 doi:10.3390/ani13162632 2076-2615 https://doaj.org/article/d36d6802426a4fd39ec1e15a68c51742 |
op_doi |
https://doi.org/10.3390/ani13162632 |
container_title |
Animals |
container_volume |
13 |
container_issue |
16 |
container_start_page |
2632 |
_version_ |
1778141203107151872 |