Harbor Porpoise ( Phocoena phocoena ) Reaction to a 3D Seismic Airgun Survey in the North Sea
The most common cetacean in the North Sea is the harbor porpoise (Phocoena phocoena). Underwater noise is increasingly recognized as a source of impact on the marine environment and seismic airguns were one of the first man-made high intensity sound source to receive attention with respect to potent...
Published in: | Frontiers in Marine Science |
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Format: | Article in Journal/Newspaper |
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2020
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Online Access: | https://pure.au.dk/portal/en/publications/3f8a6634-4b84-47e2-822a-acf915e63d12 https://doi.org/10.3389/fmars.2019.00824 http://www.scopus.com/inward/record.url?scp=85078780327&partnerID=8YFLogxK |
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ftuniaarhuspubl:oai:pure.atira.dk:publications/3f8a6634-4b84-47e2-822a-acf915e63d12 2024-02-04T10:03:56+01:00 Harbor Porpoise ( Phocoena phocoena ) Reaction to a 3D Seismic Airgun Survey in the North Sea Sarnocinska, Joanna Teilmann, Jonas Balle, Jeppe Dalgaard van Beest, Floris Delefosse, Matthieu Tougaard, Jakob 2020 https://pure.au.dk/portal/en/publications/3f8a6634-4b84-47e2-822a-acf915e63d12 https://doi.org/10.3389/fmars.2019.00824 http://www.scopus.com/inward/record.url?scp=85078780327&partnerID=8YFLogxK eng eng https://pure.au.dk/portal/en/publications/3f8a6634-4b84-47e2-822a-acf915e63d12 info:eu-repo/semantics/openAccess Sarnocinska , J , Teilmann , J , Balle , J D , van Beest , F , Delefosse , M & Tougaard , J 2020 , ' Harbor Porpoise ( Phocoena phocoena ) Reaction to a 3D Seismic Airgun Survey in the North Sea ' , Frontiers in Marine Science , vol. 6 , 824 . https://doi.org/10.3389/fmars.2019.00824 small odontocetes underwater noise behavioral response Passive acoustic monitoring C-pod frequency weighting noise logger article 2020 ftuniaarhuspubl https://doi.org/10.3389/fmars.2019.00824 2024-01-11T00:01:01Z The most common cetacean in the North Sea is the harbor porpoise (Phocoena phocoena). Underwater noise is increasingly recognized as a source of impact on the marine environment and seismic airguns were one of the first man-made high intensity sound source to receive attention with respect to potential impact on marine mammals. In this study, we investigate the effects of a 3D seismic survey on harbor porpoise echolocation activity in the Danish sector of the North Sea. This was achieved by deploying porpoise click detectors (C-PODs) and sound recorders (SM2M and SM3M) both inside and adjacent to the seismic survey area, before, during and after the survey over a total duration of 9 months. Three echolocation parameters were analyzed: number of clicks per minute, minutes with porpoise echolocation click trains and feeding buzz frequency in relation to all minutes with click trains. Decreases in echolocation signals were detected up to 8–12 km from the active airguns, which may indicate temporary displacement of porpoises or a change in porpoise echolocation behavior. However, no general displacement of harbor porpoises away from the seismic survey area could be detected when comparing to reference stations 15 km away from any seismic activity. Our results add to the understanding that underwater noise has the potential to affect temporarily foraging efficiency in porpoises. While the effect of seismic surveys on harbor porpoise behavior was smaller than what has been found for pile-driving, the cumulative effect of anthropogenic impacts could be assessed by evaluation of potential population level consequences. Article in Journal/Newspaper Phocoena phocoena Aarhus University: Research Frontiers in Marine Science 6 |
institution |
Open Polar |
collection |
Aarhus University: Research |
op_collection_id |
ftuniaarhuspubl |
language |
English |
topic |
small odontocetes underwater noise behavioral response Passive acoustic monitoring C-pod frequency weighting noise logger |
spellingShingle |
small odontocetes underwater noise behavioral response Passive acoustic monitoring C-pod frequency weighting noise logger Sarnocinska, Joanna Teilmann, Jonas Balle, Jeppe Dalgaard van Beest, Floris Delefosse, Matthieu Tougaard, Jakob Harbor Porpoise ( Phocoena phocoena ) Reaction to a 3D Seismic Airgun Survey in the North Sea |
topic_facet |
small odontocetes underwater noise behavioral response Passive acoustic monitoring C-pod frequency weighting noise logger |
description |
The most common cetacean in the North Sea is the harbor porpoise (Phocoena phocoena). Underwater noise is increasingly recognized as a source of impact on the marine environment and seismic airguns were one of the first man-made high intensity sound source to receive attention with respect to potential impact on marine mammals. In this study, we investigate the effects of a 3D seismic survey on harbor porpoise echolocation activity in the Danish sector of the North Sea. This was achieved by deploying porpoise click detectors (C-PODs) and sound recorders (SM2M and SM3M) both inside and adjacent to the seismic survey area, before, during and after the survey over a total duration of 9 months. Three echolocation parameters were analyzed: number of clicks per minute, minutes with porpoise echolocation click trains and feeding buzz frequency in relation to all minutes with click trains. Decreases in echolocation signals were detected up to 8–12 km from the active airguns, which may indicate temporary displacement of porpoises or a change in porpoise echolocation behavior. However, no general displacement of harbor porpoises away from the seismic survey area could be detected when comparing to reference stations 15 km away from any seismic activity. Our results add to the understanding that underwater noise has the potential to affect temporarily foraging efficiency in porpoises. While the effect of seismic surveys on harbor porpoise behavior was smaller than what has been found for pile-driving, the cumulative effect of anthropogenic impacts could be assessed by evaluation of potential population level consequences. |
format |
Article in Journal/Newspaper |
author |
Sarnocinska, Joanna Teilmann, Jonas Balle, Jeppe Dalgaard van Beest, Floris Delefosse, Matthieu Tougaard, Jakob |
author_facet |
Sarnocinska, Joanna Teilmann, Jonas Balle, Jeppe Dalgaard van Beest, Floris Delefosse, Matthieu Tougaard, Jakob |
author_sort |
Sarnocinska, Joanna |
title |
Harbor Porpoise ( Phocoena phocoena ) Reaction to a 3D Seismic Airgun Survey in the North Sea |
title_short |
Harbor Porpoise ( Phocoena phocoena ) Reaction to a 3D Seismic Airgun Survey in the North Sea |
title_full |
Harbor Porpoise ( Phocoena phocoena ) Reaction to a 3D Seismic Airgun Survey in the North Sea |
title_fullStr |
Harbor Porpoise ( Phocoena phocoena ) Reaction to a 3D Seismic Airgun Survey in the North Sea |
title_full_unstemmed |
Harbor Porpoise ( Phocoena phocoena ) Reaction to a 3D Seismic Airgun Survey in the North Sea |
title_sort |
harbor porpoise ( phocoena phocoena ) reaction to a 3d seismic airgun survey in the north sea |
publishDate |
2020 |
url |
https://pure.au.dk/portal/en/publications/3f8a6634-4b84-47e2-822a-acf915e63d12 https://doi.org/10.3389/fmars.2019.00824 http://www.scopus.com/inward/record.url?scp=85078780327&partnerID=8YFLogxK |
genre |
Phocoena phocoena |
genre_facet |
Phocoena phocoena |
op_source |
Sarnocinska , J , Teilmann , J , Balle , J D , van Beest , F , Delefosse , M & Tougaard , J 2020 , ' Harbor Porpoise ( Phocoena phocoena ) Reaction to a 3D Seismic Airgun Survey in the North Sea ' , Frontiers in Marine Science , vol. 6 , 824 . https://doi.org/10.3389/fmars.2019.00824 |
op_relation |
https://pure.au.dk/portal/en/publications/3f8a6634-4b84-47e2-822a-acf915e63d12 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.3389/fmars.2019.00824 |
container_title |
Frontiers in Marine Science |
container_volume |
6 |
_version_ |
1789971779211493376 |