ArticleAnimals : an open access journal from MDPI2023
Assessment of Harbour Porpoise Bycatch along the Portuguese and Galician Coast: Insights from Strandings over Two Decades.
Article in Animals : an open access journal from MDPI, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- Linking by-caught cetacean traits to fishing techniques: Insights from two species of small cetaceans.Ecological applications : a publication of the Ecological Society of America · 2026Article
- New Insights on the Diversity, Ecology and Genetic Population Structure ofAnimals : an open access journal from MDPI · 2024Article
- New Additions to the Mammal List Documented in the Portuguese Red Data Book.Animals : an open access journal from MDPI · 2024Article
- Harbor porpoise losing its edge: Genetic time series suggests a rapid population decline in Iberian waters over the last 30 years.Ecology and evolution · 2023Article
- Microplastics in Cetaceans Stranded on the Portuguese Coast.Animals : an open access journal from MDPI · 2023Article
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Authors and funding
17 authors.
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Abstract
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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