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-indu...
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crpeerj:10.7717/peerj.12284 2024-06-02T08:13:15+00:00 Age and lunar cycle predict harbor porpoise bycatch in the south-western Baltic Sea Brennecke, Dennis Wahlberg, Magnus Gilles, Anita Siebert, Ursula The Ministry of Energy, Agriculture, Enviroment, Nature and Digitalisation of Schleswig-Holstein 2021 http://dx.doi.org/10.7717/peerj.12284 https://peerj.com/articles/12284.pdf https://peerj.com/articles/12284.xml https://peerj.com/articles/12284.html en eng PeerJ https://creativecommons.org/licenses/by/4.0/ PeerJ volume 9, page e12284 ISSN 2167-8359 journal-article 2021 crpeerj https://doi.org/10.7717/peerj.12284 2024-05-07T14:13:49Z 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 PeerJ Publishing PeerJ 9 e12284 |
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Open Polar |
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PeerJ Publishing |
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crpeerj |
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English |
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. |
author2 |
The Ministry of Energy, Agriculture, Enviroment, Nature and Digitalisation of Schleswig-Holstein |
format |
Article in Journal/Newspaper |
author |
Brennecke, Dennis Wahlberg, Magnus Gilles, Anita Siebert, Ursula |
spellingShingle |
Brennecke, Dennis Wahlberg, Magnus Gilles, Anita Siebert, Ursula Age and lunar cycle predict harbor porpoise bycatch in the south-western Baltic Sea |
author_facet |
Brennecke, Dennis Wahlberg, Magnus Gilles, Anita Siebert, Ursula |
author_sort |
Brennecke, Dennis |
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 |
publishDate |
2021 |
url |
http://dx.doi.org/10.7717/peerj.12284 https://peerj.com/articles/12284.pdf https://peerj.com/articles/12284.xml https://peerj.com/articles/12284.html |
genre |
Phocoena phocoena |
genre_facet |
Phocoena phocoena |
op_source |
PeerJ volume 9, page e12284 ISSN 2167-8359 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.7717/peerj.12284 |
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PeerJ |
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9 |
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e12284 |
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1800736681683320832 |