Data from: Simulated seal scarer sounds scare porpoises, but not seals: species-specific responses to 12 kHz deterrence sounds
Acoustic harassment devices (AHD) or ‘seal scarers’ are used extensively, not only to deter seals from fisheries, but also as mitigation tools to deter marine mammals from potentially harmful sound sources, such as offshore pile driving. To test the effectiveness of AHDs, we conducted two studies wi...
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ftdryad:oai:v1.datadryad.org:10255/dryad.141778 2023-05-15T16:33:26+02:00 Data from: Simulated seal scarer sounds scare porpoises, but not seals: species-specific responses to 12 kHz deterrence sounds Mikkelsen, Lonnie Hermannsen, Line Beedholm, Kristian Madsen, Peter Teglberg Tougaard, Jakob Anholt Helgenæs 2017-07-18T13:40:34Z http://hdl.handle.net/10255/dryad.141778 https://doi.org/10.5061/dryad.8jh04 unknown doi:10.5061/dryad.8jh04/1 doi:10.5061/dryad.8jh04/2 doi:10.5061/dryad.8jh04/3 doi:10.5061/dryad.8jh04/4 doi:10.1098/rsos.170286 doi:10.5061/dryad.8jh04 Mikkelsen L, Hermannsen L, Beedholm K, Madsen PT, Tougaard J (2017) Simulated seal scarer sounds scare porpoises, but not seals: species-specific responses to 12 kHz deterrence sounds. Royal Society Open Science 4(7): 170286. 2054-5703 http://hdl.handle.net/10255/dryad.141778 Acoustic harassment devices seal scarer mitigation pile driving Harbour porpoise Harbour seal Article 2017 ftdryad https://doi.org/10.5061/dryad.8jh04 https://doi.org/10.5061/dryad.8jh04/1 https://doi.org/10.5061/dryad.8jh04/2 https://doi.org/10.5061/dryad.8jh04/3 https://doi.org/10.5061/dryad.8jh04/4 https://doi.org/10.1098/rsos.170286 2020-01-01T15:48:42Z Acoustic harassment devices (AHD) or ‘seal scarers’ are used extensively, not only to deter seals from fisheries, but also as mitigation tools to deter marine mammals from potentially harmful sound sources, such as offshore pile driving. To test the effectiveness of AHDs, we conducted two studies with similar experimental set-ups on two key species: harbour porpoises and harbour seals. We exposed animals to 500 ms tone bursts at 12 kHz simulating that of an AHD (Lofitech), but with reduced output levels (source peak-to-peak level of 165 dB re 1 µPa). Animals were localized with a theodolite before, during and after sound exposures. In total, 12 sound exposures were conducted to porpoises and 13 exposures to seals. Porpoises were found to exhibit avoidance reactions out to ranges of 525 m from the sound source. Contrary to this, seal observations increased during sound exposure within 100 m of the loudspeaker. We thereby demonstrate that porpoises and seals respond very differently to AHD sounds. This has important implications for application of AHDs in multi-species habitats, as sound levels required to deter less sensitive species (seals) can lead to excessive and unwanted large deterrence ranges on more sensitive species (porpoises). Article in Journal/Newspaper Harbour porpoise harbour seal Dryad Digital Repository (Duke University) Porpoise Harbour ENVELOPE(-130.304,-130.304,54.231,54.231) |
institution |
Open Polar |
collection |
Dryad Digital Repository (Duke University) |
op_collection_id |
ftdryad |
language |
unknown |
topic |
Acoustic harassment devices seal scarer mitigation pile driving Harbour porpoise Harbour seal |
spellingShingle |
Acoustic harassment devices seal scarer mitigation pile driving Harbour porpoise Harbour seal Mikkelsen, Lonnie Hermannsen, Line Beedholm, Kristian Madsen, Peter Teglberg Tougaard, Jakob Data from: Simulated seal scarer sounds scare porpoises, but not seals: species-specific responses to 12 kHz deterrence sounds |
topic_facet |
Acoustic harassment devices seal scarer mitigation pile driving Harbour porpoise Harbour seal |
description |
Acoustic harassment devices (AHD) or ‘seal scarers’ are used extensively, not only to deter seals from fisheries, but also as mitigation tools to deter marine mammals from potentially harmful sound sources, such as offshore pile driving. To test the effectiveness of AHDs, we conducted two studies with similar experimental set-ups on two key species: harbour porpoises and harbour seals. We exposed animals to 500 ms tone bursts at 12 kHz simulating that of an AHD (Lofitech), but with reduced output levels (source peak-to-peak level of 165 dB re 1 µPa). Animals were localized with a theodolite before, during and after sound exposures. In total, 12 sound exposures were conducted to porpoises and 13 exposures to seals. Porpoises were found to exhibit avoidance reactions out to ranges of 525 m from the sound source. Contrary to this, seal observations increased during sound exposure within 100 m of the loudspeaker. We thereby demonstrate that porpoises and seals respond very differently to AHD sounds. This has important implications for application of AHDs in multi-species habitats, as sound levels required to deter less sensitive species (seals) can lead to excessive and unwanted large deterrence ranges on more sensitive species (porpoises). |
format |
Article in Journal/Newspaper |
author |
Mikkelsen, Lonnie Hermannsen, Line Beedholm, Kristian Madsen, Peter Teglberg Tougaard, Jakob |
author_facet |
Mikkelsen, Lonnie Hermannsen, Line Beedholm, Kristian Madsen, Peter Teglberg Tougaard, Jakob |
author_sort |
Mikkelsen, Lonnie |
title |
Data from: Simulated seal scarer sounds scare porpoises, but not seals: species-specific responses to 12 kHz deterrence sounds |
title_short |
Data from: Simulated seal scarer sounds scare porpoises, but not seals: species-specific responses to 12 kHz deterrence sounds |
title_full |
Data from: Simulated seal scarer sounds scare porpoises, but not seals: species-specific responses to 12 kHz deterrence sounds |
title_fullStr |
Data from: Simulated seal scarer sounds scare porpoises, but not seals: species-specific responses to 12 kHz deterrence sounds |
title_full_unstemmed |
Data from: Simulated seal scarer sounds scare porpoises, but not seals: species-specific responses to 12 kHz deterrence sounds |
title_sort |
data from: simulated seal scarer sounds scare porpoises, but not seals: species-specific responses to 12 khz deterrence sounds |
publishDate |
2017 |
url |
http://hdl.handle.net/10255/dryad.141778 https://doi.org/10.5061/dryad.8jh04 |
op_coverage |
Anholt Helgenæs |
long_lat |
ENVELOPE(-130.304,-130.304,54.231,54.231) |
geographic |
Porpoise Harbour |
geographic_facet |
Porpoise Harbour |
genre |
Harbour porpoise harbour seal |
genre_facet |
Harbour porpoise harbour seal |
op_relation |
doi:10.5061/dryad.8jh04/1 doi:10.5061/dryad.8jh04/2 doi:10.5061/dryad.8jh04/3 doi:10.5061/dryad.8jh04/4 doi:10.1098/rsos.170286 doi:10.5061/dryad.8jh04 Mikkelsen L, Hermannsen L, Beedholm K, Madsen PT, Tougaard J (2017) Simulated seal scarer sounds scare porpoises, but not seals: species-specific responses to 12 kHz deterrence sounds. Royal Society Open Science 4(7): 170286. 2054-5703 http://hdl.handle.net/10255/dryad.141778 |
op_doi |
https://doi.org/10.5061/dryad.8jh04 https://doi.org/10.5061/dryad.8jh04/1 https://doi.org/10.5061/dryad.8jh04/2 https://doi.org/10.5061/dryad.8jh04/3 https://doi.org/10.5061/dryad.8jh04/4 https://doi.org/10.1098/rsos.170286 |
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1766023122601902080 |