Age and lunar cycle predict harbor porpoise bycatch in the south-western Baltic Sea
The harbor porpoise, Phocoena phocoena, is the only cetacean regularly occurring in the Baltic Sea. During the last decades, several anthropogenic activities have affected porpoises in the Baltic region. Most notably is bycatch in static fishing gear, such as gill nets, which is the main human-induc...
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ftdoajarticles:oai:doaj.org/article:7d53b986bd764fe19ecbdf8d8cc37ad9 2024-01-07T09:46:01+01:00 Age and lunar cycle predict harbor porpoise bycatch in the south-western Baltic Sea Dennis Brennecke Magnus Wahlberg Anita Gilles Ursula Siebert 2021-10-01T00:00:00Z https://doi.org/10.7717/peerj.12284 https://doaj.org/article/7d53b986bd764fe19ecbdf8d8cc37ad9 EN eng PeerJ Inc. https://peerj.com/articles/12284.pdf https://peerj.com/articles/12284/ https://doaj.org/toc/2167-8359 doi:10.7717/peerj.12284 2167-8359 https://doaj.org/article/7d53b986bd764fe19ecbdf8d8cc37ad9 PeerJ, Vol 9, p e12284 (2021) Harbor porpoise Phocoena phocoena Fisheries Bycatch Baltic Sea Abiotic factors Medicine R Biology (General) QH301-705.5 article 2021 ftdoajarticles https://doi.org/10.7717/peerj.12284 2023-12-10T01:50:07Z The harbor porpoise, Phocoena phocoena, is the only cetacean regularly occurring in the Baltic Sea. During the last decades, several anthropogenic activities have affected porpoises in the Baltic region. Most notably is bycatch in static fishing gear, such as gill nets, which is the main human-induced cause of death in odontocetes. There is still considerable uncertainty about which factors influence the amount of bycatch. In the present study, we reviewed bycatch data collected from 1987 to 2016 from the south-western Baltic Sea. There was a significant difference in bycatch due to seasonality and region, and there was a higher bycatch rate in juveniles than in adults. The only abiotic factor associated with bycatch was the lunar cycle, with more animals bycaught during a full moon. These results improve our understanding of which biotic and abiotic factors are associated with bycatch of Baltic harbor porpoises, which can be used to strengthen conservation endeavors such as managing fishing efforts. Article in Journal/Newspaper Phocoena phocoena Directory of Open Access Journals: DOAJ Articles PeerJ 9 e12284 |
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Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Harbor porpoise Phocoena phocoena Fisheries Bycatch Baltic Sea Abiotic factors Medicine R Biology (General) QH301-705.5 |
spellingShingle |
Harbor porpoise Phocoena phocoena Fisheries Bycatch Baltic Sea Abiotic factors Medicine R Biology (General) QH301-705.5 Dennis Brennecke Magnus Wahlberg Anita Gilles Ursula Siebert Age and lunar cycle predict harbor porpoise bycatch in the south-western Baltic Sea |
topic_facet |
Harbor porpoise Phocoena phocoena Fisheries Bycatch Baltic Sea Abiotic factors Medicine R Biology (General) QH301-705.5 |
description |
The harbor porpoise, Phocoena phocoena, is the only cetacean regularly occurring in the Baltic Sea. During the last decades, several anthropogenic activities have affected porpoises in the Baltic region. Most notably is bycatch in static fishing gear, such as gill nets, which is the main human-induced cause of death in odontocetes. There is still considerable uncertainty about which factors influence the amount of bycatch. In the present study, we reviewed bycatch data collected from 1987 to 2016 from the south-western Baltic Sea. There was a significant difference in bycatch due to seasonality and region, and there was a higher bycatch rate in juveniles than in adults. The only abiotic factor associated with bycatch was the lunar cycle, with more animals bycaught during a full moon. These results improve our understanding of which biotic and abiotic factors are associated with bycatch of Baltic harbor porpoises, which can be used to strengthen conservation endeavors such as managing fishing efforts. |
format |
Article in Journal/Newspaper |
author |
Dennis Brennecke Magnus Wahlberg Anita Gilles Ursula Siebert |
author_facet |
Dennis Brennecke Magnus Wahlberg Anita Gilles Ursula Siebert |
author_sort |
Dennis Brennecke |
title |
Age and lunar cycle predict harbor porpoise bycatch in the south-western Baltic Sea |
title_short |
Age and lunar cycle predict harbor porpoise bycatch in the south-western Baltic Sea |
title_full |
Age and lunar cycle predict harbor porpoise bycatch in the south-western Baltic Sea |
title_fullStr |
Age and lunar cycle predict harbor porpoise bycatch in the south-western Baltic Sea |
title_full_unstemmed |
Age and lunar cycle predict harbor porpoise bycatch in the south-western Baltic Sea |
title_sort |
age and lunar cycle predict harbor porpoise bycatch in the south-western baltic sea |
publisher |
PeerJ Inc. |
publishDate |
2021 |
url |
https://doi.org/10.7717/peerj.12284 https://doaj.org/article/7d53b986bd764fe19ecbdf8d8cc37ad9 |
genre |
Phocoena phocoena |
genre_facet |
Phocoena phocoena |
op_source |
PeerJ, Vol 9, p e12284 (2021) |
op_relation |
https://peerj.com/articles/12284.pdf https://peerj.com/articles/12284/ https://doaj.org/toc/2167-8359 doi:10.7717/peerj.12284 2167-8359 https://doaj.org/article/7d53b986bd764fe19ecbdf8d8cc37ad9 |
op_doi |
https://doi.org/10.7717/peerj.12284 |
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PeerJ |
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9 |
container_start_page |
e12284 |
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1787427693002752000 |