Testing the effectiveness of an acoustic deterrent device for excluding seals from Atlantic salmon rivers in Scotland
Abstract Graham, I. M., Harris, R. N., Denny, B., Fowden, D., and Pullan, D. 2009. Testing the effectiveness of an acoustic deterrent device for excluding seals from Atlantic salmon rivers in Scotland. – ICES Journal of Marine Science, 66: 860–864. In Scotland, there is frequent conflict between sal...
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Online Access: | http://dx.doi.org/10.1093/icesjms/fsp111 http://academic.oup.com/icesjms/article-pdf/66/5/860/29132826/fsp111.pdf |
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croxfordunivpr:10.1093/icesjms/fsp111 2024-06-23T07:51:20+00:00 Testing the effectiveness of an acoustic deterrent device for excluding seals from Atlantic salmon rivers in Scotland Graham, Isla M. Harris, Robert N. Denny, Becks Fowden, Dan Pullan, Dave 2009 http://dx.doi.org/10.1093/icesjms/fsp111 http://academic.oup.com/icesjms/article-pdf/66/5/860/29132826/fsp111.pdf en eng Oxford University Press (OUP) ICES Journal of Marine Science volume 66, issue 5, page 860-864 ISSN 1095-9289 1054-3139 journal-article 2009 croxfordunivpr https://doi.org/10.1093/icesjms/fsp111 2024-06-04T06:09:03Z Abstract Graham, I. M., Harris, R. N., Denny, B., Fowden, D., and Pullan, D. 2009. Testing the effectiveness of an acoustic deterrent device for excluding seals from Atlantic salmon rivers in Scotland. – ICES Journal of Marine Science, 66: 860–864. In Scotland, there is frequent conflict between salmon rod fisheries and seals, which is often managed by the shooting of seals in rivers, with potential negative impacts on protected populations of seals. Non-lethal devices have not been tested extensively in rivers as an alternative to shooting. Trials were carried out between January and May 2006 on the River North Esk and between October 2007 and February 2008 on the River Conon in northeast Scotland to examine the effectiveness of an acoustic deterrent device (ADD) at deterring seals from a specific area of river and as a barrier to the upstream movement of seals. The ADD was switched on and off alternately for periods of several days, and surveys were carried out to estimate the number of seals present within each river. The ADD had no significant effect on the absolute abundance of seals in the survey area in either river, but it did reduce seal movement upstream significantly, by ∼50% in both rivers. This reduction was constant over the 4-month period of both trials. The results suggest that ADDs might be a useful conservation tool in the management of seal–salmon conflicts, particularly in estuaries and rivers where the potential for adversely impacting cetaceans is limited. Article in Journal/Newspaper Atlantic salmon Oxford University Press ICES Journal of Marine Science 66 5 860 864 |
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Abstract Graham, I. M., Harris, R. N., Denny, B., Fowden, D., and Pullan, D. 2009. Testing the effectiveness of an acoustic deterrent device for excluding seals from Atlantic salmon rivers in Scotland. – ICES Journal of Marine Science, 66: 860–864. In Scotland, there is frequent conflict between salmon rod fisheries and seals, which is often managed by the shooting of seals in rivers, with potential negative impacts on protected populations of seals. Non-lethal devices have not been tested extensively in rivers as an alternative to shooting. Trials were carried out between January and May 2006 on the River North Esk and between October 2007 and February 2008 on the River Conon in northeast Scotland to examine the effectiveness of an acoustic deterrent device (ADD) at deterring seals from a specific area of river and as a barrier to the upstream movement of seals. The ADD was switched on and off alternately for periods of several days, and surveys were carried out to estimate the number of seals present within each river. The ADD had no significant effect on the absolute abundance of seals in the survey area in either river, but it did reduce seal movement upstream significantly, by ∼50% in both rivers. This reduction was constant over the 4-month period of both trials. The results suggest that ADDs might be a useful conservation tool in the management of seal–salmon conflicts, particularly in estuaries and rivers where the potential for adversely impacting cetaceans is limited. |
format |
Article in Journal/Newspaper |
author |
Graham, Isla M. Harris, Robert N. Denny, Becks Fowden, Dan Pullan, Dave |
spellingShingle |
Graham, Isla M. Harris, Robert N. Denny, Becks Fowden, Dan Pullan, Dave Testing the effectiveness of an acoustic deterrent device for excluding seals from Atlantic salmon rivers in Scotland |
author_facet |
Graham, Isla M. Harris, Robert N. Denny, Becks Fowden, Dan Pullan, Dave |
author_sort |
Graham, Isla M. |
title |
Testing the effectiveness of an acoustic deterrent device for excluding seals from Atlantic salmon rivers in Scotland |
title_short |
Testing the effectiveness of an acoustic deterrent device for excluding seals from Atlantic salmon rivers in Scotland |
title_full |
Testing the effectiveness of an acoustic deterrent device for excluding seals from Atlantic salmon rivers in Scotland |
title_fullStr |
Testing the effectiveness of an acoustic deterrent device for excluding seals from Atlantic salmon rivers in Scotland |
title_full_unstemmed |
Testing the effectiveness of an acoustic deterrent device for excluding seals from Atlantic salmon rivers in Scotland |
title_sort |
testing the effectiveness of an acoustic deterrent device for excluding seals from atlantic salmon rivers in scotland |
publisher |
Oxford University Press (OUP) |
publishDate |
2009 |
url |
http://dx.doi.org/10.1093/icesjms/fsp111 http://academic.oup.com/icesjms/article-pdf/66/5/860/29132826/fsp111.pdf |
genre |
Atlantic salmon |
genre_facet |
Atlantic salmon |
op_source |
ICES Journal of Marine Science volume 66, issue 5, page 860-864 ISSN 1095-9289 1054-3139 |
op_doi |
https://doi.org/10.1093/icesjms/fsp111 |
container_title |
ICES Journal of Marine Science |
container_volume |
66 |
container_issue |
5 |
container_start_page |
860 |
op_container_end_page |
864 |
_version_ |
1802642405057363968 |