Data from: Harbour porpoises respond to small boats by speeding up and moving away
Recreational boats are common in many coastal waters, yet their effects on cetaceans and other sensitive marine species remain poorly understood. To address this knowledge gap, we used drone videos to quantify how harbour porpoises ( Phocoena phocoena ) responded to a small motorboat approaching at...
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ftzenodo:oai:zenodo.org:11125118 2024-09-09T20:03:34+00:00 Data from: Harbour porpoises respond to small boats by speeding up and moving away Hao, Xiuqing Hamel, Héloïse Grandjean, Céline Hagerup Fedutin, Ivan Wahlberg, Magnus Frankish, Caitlin Kim Nabe-Nielsen, Jacob 2024-05-07 https://doi.org/10.5061/dryad.q83bk3jq8 unknown Zenodo https://zenodo.org/communities/dryad https://doi.org/10.5061/dryad.q83bk3jq8 oai:zenodo.org:11125118 info:eu-repo/semantics/openAccess Creative Commons Zero v1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/legalcode Phocoena phocoena Underwater noise recreational boat motorboat behavioural response info:eu-repo/semantics/other 2024 ftzenodo https://doi.org/10.5061/dryad.q83bk3jq8 2024-07-25T12:55:51Z Recreational boats are common in many coastal waters, yet their effects on cetaceans and other sensitive marine species remain poorly understood. To address this knowledge gap, we used drone videos to quantify how harbour porpoises ( Phocoena phocoena ) responded to a small motorboat approaching at different speeds (10 or 20 knots). The experiment was carried out in shallow waters near Funen, Denmark (55.51° N, 10.79° E) between July and September 2022. Porpoises moved further away from the boat path during approaches at both boat speeds. In addition, porpoises swam faster when approached at 20 knots but not when approached at 10 knots, and they had a higher likelihood of moving away from the boat path when approached at 10 knots but not at 20 knots. Importantly, the received sound level did not depend on how fast the boat approached, suggesting that differences in porpoise responses were related to the speed of the boat's approach rather than to sound itself. The porpoises' behaviour during the minute where the boat was closest did not differ from their behaviour before boat exposure, indicating that the direct impact of small vessels on porpoise behaviour was most likely small. Nevertheless, repeated exposure to noise from small vessels could influence porpoises' foraging efforts and cause them to relocate from disturbed areas. The approach used in this study increases our understanding of recreational boats' impact on harbour porpoises and can be used to inform efficient mitigation measures to help conservation efforts. Funding provided by: China Scholarship Council Crossref Funder Registry ID: https://ror.org/04atp4p48 Award Number: Funding provided by: Aarhus University Crossref Funder Registry ID: https://ror.org/01aj84f44 Award Number: Other/Unknown Material Phocoena phocoena Zenodo |
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Phocoena phocoena Underwater noise recreational boat motorboat behavioural response |
spellingShingle |
Phocoena phocoena Underwater noise recreational boat motorboat behavioural response Hao, Xiuqing Hamel, Héloïse Grandjean, Céline Hagerup Fedutin, Ivan Wahlberg, Magnus Frankish, Caitlin Kim Nabe-Nielsen, Jacob Data from: Harbour porpoises respond to small boats by speeding up and moving away |
topic_facet |
Phocoena phocoena Underwater noise recreational boat motorboat behavioural response |
description |
Recreational boats are common in many coastal waters, yet their effects on cetaceans and other sensitive marine species remain poorly understood. To address this knowledge gap, we used drone videos to quantify how harbour porpoises ( Phocoena phocoena ) responded to a small motorboat approaching at different speeds (10 or 20 knots). The experiment was carried out in shallow waters near Funen, Denmark (55.51° N, 10.79° E) between July and September 2022. Porpoises moved further away from the boat path during approaches at both boat speeds. In addition, porpoises swam faster when approached at 20 knots but not when approached at 10 knots, and they had a higher likelihood of moving away from the boat path when approached at 10 knots but not at 20 knots. Importantly, the received sound level did not depend on how fast the boat approached, suggesting that differences in porpoise responses were related to the speed of the boat's approach rather than to sound itself. The porpoises' behaviour during the minute where the boat was closest did not differ from their behaviour before boat exposure, indicating that the direct impact of small vessels on porpoise behaviour was most likely small. Nevertheless, repeated exposure to noise from small vessels could influence porpoises' foraging efforts and cause them to relocate from disturbed areas. The approach used in this study increases our understanding of recreational boats' impact on harbour porpoises and can be used to inform efficient mitigation measures to help conservation efforts. Funding provided by: China Scholarship Council Crossref Funder Registry ID: https://ror.org/04atp4p48 Award Number: Funding provided by: Aarhus University Crossref Funder Registry ID: https://ror.org/01aj84f44 Award Number: |
format |
Other/Unknown Material |
author |
Hao, Xiuqing Hamel, Héloïse Grandjean, Céline Hagerup Fedutin, Ivan Wahlberg, Magnus Frankish, Caitlin Kim Nabe-Nielsen, Jacob |
author_facet |
Hao, Xiuqing Hamel, Héloïse Grandjean, Céline Hagerup Fedutin, Ivan Wahlberg, Magnus Frankish, Caitlin Kim Nabe-Nielsen, Jacob |
author_sort |
Hao, Xiuqing |
title |
Data from: Harbour porpoises respond to small boats by speeding up and moving away |
title_short |
Data from: Harbour porpoises respond to small boats by speeding up and moving away |
title_full |
Data from: Harbour porpoises respond to small boats by speeding up and moving away |
title_fullStr |
Data from: Harbour porpoises respond to small boats by speeding up and moving away |
title_full_unstemmed |
Data from: Harbour porpoises respond to small boats by speeding up and moving away |
title_sort |
data from: harbour porpoises respond to small boats by speeding up and moving away |
publisher |
Zenodo |
publishDate |
2024 |
url |
https://doi.org/10.5061/dryad.q83bk3jq8 |
genre |
Phocoena phocoena |
genre_facet |
Phocoena phocoena |
op_relation |
https://zenodo.org/communities/dryad https://doi.org/10.5061/dryad.q83bk3jq8 oai:zenodo.org:11125118 |
op_rights |
info:eu-repo/semantics/openAccess Creative Commons Zero v1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/legalcode |
op_doi |
https://doi.org/10.5061/dryad.q83bk3jq8 |
_version_ |
1809935519216304128 |