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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ftmdpi:oai:mdpi.com:/2076-2615/13/16/2632/ 2023-09-05T13:20:00+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 agris 2023-08-15 application/pdf https://doi.org/10.3390/ani13162632 EN eng Multidisciplinary Digital Publishing Institute Aquatic Animals https://dx.doi.org/10.3390/ani13162632 https://creativecommons.org/licenses/by/4.0/ Animals; Volume 13; Issue 16; Pages: 2632 Iberian Peninsula marine mammals Phocoena phocoena fisheries potential biological removal critically endangered Text 2023 ftmdpi https://doi.org/10.3390/ani13162632 2023-08-20T23:52:23Z 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. Text Harbour porpoise Phocoena phocoena MDPI Open Access Publishing Animals 13 16 2632 |
institution |
Open Polar |
collection |
MDPI Open Access Publishing |
op_collection_id |
ftmdpi |
language |
English |
topic |
Iberian Peninsula marine mammals Phocoena phocoena fisheries potential biological removal critically endangered |
spellingShingle |
Iberian Peninsula marine mammals Phocoena phocoena fisheries potential biological removal critically endangered 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 |
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 |
Text |
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 |
Multidisciplinary Digital Publishing Institute |
publishDate |
2023 |
url |
https://doi.org/10.3390/ani13162632 |
op_coverage |
agris |
genre |
Harbour porpoise Phocoena phocoena |
genre_facet |
Harbour porpoise Phocoena phocoena |
op_source |
Animals; Volume 13; Issue 16; Pages: 2632 |
op_relation |
Aquatic Animals https://dx.doi.org/10.3390/ani13162632 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/ani13162632 |
container_title |
Animals |
container_volume |
13 |
container_issue |
16 |
container_start_page |
2632 |
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1776200763644575744 |