Acoustic surveys confirm the high-density areas of harbour porpoises found by satellite tracking
Abstract Sveegaard, S., Teilmann, J., Berggren, P., Mouritsen, K. N., Gillespie, D., and Tougaard, J. 2011. Acoustic surveys confirm the high-density areas of harbour porpoises found by satellite tracking. – ICES Journal of Marine Science, 68: 929–936. The population status of the harbour porpoise (...
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Online Access: | http://dx.doi.org/10.1093/icesjms/fsr025 http://academic.oup.com/icesjms/article-pdf/68/5/929/29138999/fsr025.pdf |
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croxfordunivpr:10.1093/icesjms/fsr025 2024-09-15T18:10:43+00:00 Acoustic surveys confirm the high-density areas of harbour porpoises found by satellite tracking Sveegaard, Signe Teilmann, Jonas Berggren, Per Mouritsen, Kim N. Gillespie, Douglas Tougaard, Jakob 2011 http://dx.doi.org/10.1093/icesjms/fsr025 http://academic.oup.com/icesjms/article-pdf/68/5/929/29138999/fsr025.pdf en eng Oxford University Press (OUP) ICES Journal of Marine Science volume 68, issue 5, page 929-936 ISSN 1095-9289 1054-3139 journal-article 2011 croxfordunivpr https://doi.org/10.1093/icesjms/fsr025 2024-07-08T04:26:02Z Abstract Sveegaard, S., Teilmann, J., Berggren, P., Mouritsen, K. N., Gillespie, D., and Tougaard, J. 2011. Acoustic surveys confirm the high-density areas of harbour porpoises found by satellite tracking. – ICES Journal of Marine Science, 68: 929–936. The population status of the harbour porpoise (Phocoena phocoena) has long been of concern in European waters. Consequently, the European Commission (EC) Habitats Directive obligates all EC member states to designate marine protected areas (MPAs) for harbour porpoises before 2012. These will be designated areas having the greatest density of porpoises. However, little is known about comparability between the monitoring methods used to examine porpoise distribution and density, and conflicting results may arise, especially when considering their varying sample size and temporal and spatial scales. Here, vessel-based acoustic surveys are seen as an independent method of testing the temporal and spatial permanence of previously identified areas of high density of harbour porpoises found by satellite-tracking them in inner Danish waters. Based on six acoustic surveys, a strong spatial accord was found between the number of acoustic detections of harbour porpoises and their density distribution obtained from 10 years of satellite tracking. The results confirm the presence and permanence of areas of high density of porpoises and validate the two methods for identifying and monitoring future MPAs for the species. Article in Journal/Newspaper Harbour porpoise Phocoena phocoena Oxford University Press ICES Journal of Marine Science 68 5 929 936 |
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description |
Abstract Sveegaard, S., Teilmann, J., Berggren, P., Mouritsen, K. N., Gillespie, D., and Tougaard, J. 2011. Acoustic surveys confirm the high-density areas of harbour porpoises found by satellite tracking. – ICES Journal of Marine Science, 68: 929–936. The population status of the harbour porpoise (Phocoena phocoena) has long been of concern in European waters. Consequently, the European Commission (EC) Habitats Directive obligates all EC member states to designate marine protected areas (MPAs) for harbour porpoises before 2012. These will be designated areas having the greatest density of porpoises. However, little is known about comparability between the monitoring methods used to examine porpoise distribution and density, and conflicting results may arise, especially when considering their varying sample size and temporal and spatial scales. Here, vessel-based acoustic surveys are seen as an independent method of testing the temporal and spatial permanence of previously identified areas of high density of harbour porpoises found by satellite-tracking them in inner Danish waters. Based on six acoustic surveys, a strong spatial accord was found between the number of acoustic detections of harbour porpoises and their density distribution obtained from 10 years of satellite tracking. The results confirm the presence and permanence of areas of high density of porpoises and validate the two methods for identifying and monitoring future MPAs for the species. |
format |
Article in Journal/Newspaper |
author |
Sveegaard, Signe Teilmann, Jonas Berggren, Per Mouritsen, Kim N. Gillespie, Douglas Tougaard, Jakob |
spellingShingle |
Sveegaard, Signe Teilmann, Jonas Berggren, Per Mouritsen, Kim N. Gillespie, Douglas Tougaard, Jakob Acoustic surveys confirm the high-density areas of harbour porpoises found by satellite tracking |
author_facet |
Sveegaard, Signe Teilmann, Jonas Berggren, Per Mouritsen, Kim N. Gillespie, Douglas Tougaard, Jakob |
author_sort |
Sveegaard, Signe |
title |
Acoustic surveys confirm the high-density areas of harbour porpoises found by satellite tracking |
title_short |
Acoustic surveys confirm the high-density areas of harbour porpoises found by satellite tracking |
title_full |
Acoustic surveys confirm the high-density areas of harbour porpoises found by satellite tracking |
title_fullStr |
Acoustic surveys confirm the high-density areas of harbour porpoises found by satellite tracking |
title_full_unstemmed |
Acoustic surveys confirm the high-density areas of harbour porpoises found by satellite tracking |
title_sort |
acoustic surveys confirm the high-density areas of harbour porpoises found by satellite tracking |
publisher |
Oxford University Press (OUP) |
publishDate |
2011 |
url |
http://dx.doi.org/10.1093/icesjms/fsr025 http://academic.oup.com/icesjms/article-pdf/68/5/929/29138999/fsr025.pdf |
genre |
Harbour porpoise Phocoena phocoena |
genre_facet |
Harbour porpoise Phocoena phocoena |
op_source |
ICES Journal of Marine Science volume 68, issue 5, page 929-936 ISSN 1095-9289 1054-3139 |
op_doi |
https://doi.org/10.1093/icesjms/fsr025 |
container_title |
ICES Journal of Marine Science |
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68 |
container_issue |
5 |
container_start_page |
929 |
op_container_end_page |
936 |
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1810448302120894464 |