Harbour porpoise responses to pile-driving diminish over time
Estimating impacts of offshore windfarm construction on marine mammals requires data on displacement in relation to different noise levels and sources. Using echolocation detectors and noise recorders, we investigated harbour porpoise behavioural responses to piling noise during the 10-month foundat...
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crroyalsociety:10.1098/rsos.190335 2024-06-23T07:53:30+00:00 Harbour porpoise responses to pile-driving diminish over time Graham, Isla M. Merchant, Nathan D. Farcas, Adrian Barton, Tim R. Cheney, Barbara Bono, Saliza Thompson, Paul M. Beatrice Offshore Wind Ltd. 2019 http://dx.doi.org/10.1098/rsos.190335 https://royalsocietypublishing.org/doi/pdf/10.1098/rsos.190335 https://royalsocietypublishing.org/doi/full-xml/10.1098/rsos.190335 en eng The Royal Society https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ Royal Society Open Science volume 6, issue 6, page 190335 ISSN 2054-5703 journal-article 2019 crroyalsociety https://doi.org/10.1098/rsos.190335 2024-06-04T06:23:09Z Estimating impacts of offshore windfarm construction on marine mammals requires data on displacement in relation to different noise levels and sources. Using echolocation detectors and noise recorders, we investigated harbour porpoise behavioural responses to piling noise during the 10-month foundation installation of a North Sea windfarm. Current UK guidance assumes total displacement within 26 km of pile driving. By contrast, we recorded a 50% probability of response within 7.4 km (95% CI = 5.7–9.4) at the first location piled, decreasing to 1.3 km (95% CI = 0.2–2.8) by the final location; representing 28% (95% CI = 21–35) and 18% (95% CI = 13–23) displacement of individuals within 26 km. Distance proved as good a predictor of responses as audiogram-weighted received levels, presenting a more practicable variable for environmental assessments. Critically, acoustic deterrent device (ADD) use and vessel activity increased response levels. Policy and management to minimize impacts of renewables on cetaceans have concentrated on pile-driving noise. Our results highlight the need to consider trade-offs between efforts to reduce far-field behavioural disturbance and near-field injury through ADD use. Article in Journal/Newspaper Harbour porpoise The Royal Society Royal Society Open Science 6 6 190335 |
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Open Polar |
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The Royal Society |
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crroyalsociety |
language |
English |
description |
Estimating impacts of offshore windfarm construction on marine mammals requires data on displacement in relation to different noise levels and sources. Using echolocation detectors and noise recorders, we investigated harbour porpoise behavioural responses to piling noise during the 10-month foundation installation of a North Sea windfarm. Current UK guidance assumes total displacement within 26 km of pile driving. By contrast, we recorded a 50% probability of response within 7.4 km (95% CI = 5.7–9.4) at the first location piled, decreasing to 1.3 km (95% CI = 0.2–2.8) by the final location; representing 28% (95% CI = 21–35) and 18% (95% CI = 13–23) displacement of individuals within 26 km. Distance proved as good a predictor of responses as audiogram-weighted received levels, presenting a more practicable variable for environmental assessments. Critically, acoustic deterrent device (ADD) use and vessel activity increased response levels. Policy and management to minimize impacts of renewables on cetaceans have concentrated on pile-driving noise. Our results highlight the need to consider trade-offs between efforts to reduce far-field behavioural disturbance and near-field injury through ADD use. |
author2 |
Beatrice Offshore Wind Ltd. |
format |
Article in Journal/Newspaper |
author |
Graham, Isla M. Merchant, Nathan D. Farcas, Adrian Barton, Tim R. Cheney, Barbara Bono, Saliza Thompson, Paul M. |
spellingShingle |
Graham, Isla M. Merchant, Nathan D. Farcas, Adrian Barton, Tim R. Cheney, Barbara Bono, Saliza Thompson, Paul M. Harbour porpoise responses to pile-driving diminish over time |
author_facet |
Graham, Isla M. Merchant, Nathan D. Farcas, Adrian Barton, Tim R. Cheney, Barbara Bono, Saliza Thompson, Paul M. |
author_sort |
Graham, Isla M. |
title |
Harbour porpoise responses to pile-driving diminish over time |
title_short |
Harbour porpoise responses to pile-driving diminish over time |
title_full |
Harbour porpoise responses to pile-driving diminish over time |
title_fullStr |
Harbour porpoise responses to pile-driving diminish over time |
title_full_unstemmed |
Harbour porpoise responses to pile-driving diminish over time |
title_sort |
harbour porpoise responses to pile-driving diminish over time |
publisher |
The Royal Society |
publishDate |
2019 |
url |
http://dx.doi.org/10.1098/rsos.190335 https://royalsocietypublishing.org/doi/pdf/10.1098/rsos.190335 https://royalsocietypublishing.org/doi/full-xml/10.1098/rsos.190335 |
genre |
Harbour porpoise |
genre_facet |
Harbour porpoise |
op_source |
Royal Society Open Science volume 6, issue 6, page 190335 ISSN 2054-5703 |
op_rights |
https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ |
op_doi |
https://doi.org/10.1098/rsos.190335 |
container_title |
Royal Society Open Science |
container_volume |
6 |
container_issue |
6 |
container_start_page |
190335 |
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1802645201649401856 |