Harbour porpoise, Phocoena phocoena L., bycatch in set gill nets in the Celtic Sea
A programme to assess the cetacean by-catch in the Irish and UK set gillnet fisheries in the Celtic Sea was conducted from August 1992 to March 1993 using volunteer observers. observers were present for the hauling of over 2500 km of net which caught 43 harbour porpoises and four common dolphins, wi...
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Online Access: | https://risweb.st-andrews.ac.uk/portal/en/researchoutput/harbour-porpoise-phocoena-phocoena-l-bycatch-in-set-gill-nets-in-the-celtic-sea(95bc4137-fc65-4b7a-ad64-932bc3e5c659).html http://www.scopus.com/inward/record.url?scp=0031251810&partnerID=8YFLogxK |
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ftunstandrewcris:oai:risweb.st-andrews.ac.uk:publications/95bc4137-fc65-4b7a-ad64-932bc3e5c659 2023-05-15T16:33:21+02:00 Harbour porpoise, Phocoena phocoena L., bycatch in set gill nets in the Celtic Sea Tregenza, NJC Berrow, SD Hammond, Philip Steven Leaper, R 1997-10 https://risweb.st-andrews.ac.uk/portal/en/researchoutput/harbour-porpoise-phocoena-phocoena-l-bycatch-in-set-gill-nets-in-the-celtic-sea(95bc4137-fc65-4b7a-ad64-932bc3e5c659).html http://www.scopus.com/inward/record.url?scp=0031251810&partnerID=8YFLogxK eng eng info:eu-repo/semantics/restrictedAccess Tregenza , NJC , Berrow , SD , Hammond , P S & Leaper , R 1997 , ' Harbour porpoise, Phocoena phocoena L., bycatch in set gill nets in the Celtic Sea ' , ICES Journal of Marine Science , vol. 54 , pp. 896-904 . harbour porpoise Phocoena by-catch observer population impact gillnet North Atlantic Celtic Sea INCIDENTAL CAPTURE MORTALITY IRELAND MAINE NETS GULF article 1997 ftunstandrewcris 2021-12-26T14:10:34Z A programme to assess the cetacean by-catch in the Irish and UK set gillnet fisheries in the Celtic Sea was conducted from August 1992 to March 1993 using volunteer observers. observers were present for the hauling of over 2500 km of net which caught 43 harbour porpoises and four common dolphins, with one of each alive. The by-catch rate was 7.7 porpoises per 10 000 km . h of net immersion. A negative relationship was found between porpoise by-catch and tidal speed but no other relationships were found with operational or environmental variables. Spatial and temporal stratification of the by-catch rate and effort data had a small effect on estimated total by-catch, which was therefore estimated from pooled data. The estimated total annual by-catch of 2200 porpoises (95% C.I. 900-3500) is 6.2% of the estimated number of porpoises in the Celtic Sea and there is serious cause for concern about the ability of the population to which they belong to sustain this level of by-catch. (C) 1997 International Council for the Exploration of the Sea. Article in Journal/Newspaper Harbour porpoise North Atlantic Phocoena phocoena University of St Andrews: Research Portal |
institution |
Open Polar |
collection |
University of St Andrews: Research Portal |
op_collection_id |
ftunstandrewcris |
language |
English |
topic |
harbour porpoise Phocoena by-catch observer population impact gillnet North Atlantic Celtic Sea INCIDENTAL CAPTURE MORTALITY IRELAND MAINE NETS GULF |
spellingShingle |
harbour porpoise Phocoena by-catch observer population impact gillnet North Atlantic Celtic Sea INCIDENTAL CAPTURE MORTALITY IRELAND MAINE NETS GULF Tregenza, NJC Berrow, SD Hammond, Philip Steven Leaper, R Harbour porpoise, Phocoena phocoena L., bycatch in set gill nets in the Celtic Sea |
topic_facet |
harbour porpoise Phocoena by-catch observer population impact gillnet North Atlantic Celtic Sea INCIDENTAL CAPTURE MORTALITY IRELAND MAINE NETS GULF |
description |
A programme to assess the cetacean by-catch in the Irish and UK set gillnet fisheries in the Celtic Sea was conducted from August 1992 to March 1993 using volunteer observers. observers were present for the hauling of over 2500 km of net which caught 43 harbour porpoises and four common dolphins, with one of each alive. The by-catch rate was 7.7 porpoises per 10 000 km . h of net immersion. A negative relationship was found between porpoise by-catch and tidal speed but no other relationships were found with operational or environmental variables. Spatial and temporal stratification of the by-catch rate and effort data had a small effect on estimated total by-catch, which was therefore estimated from pooled data. The estimated total annual by-catch of 2200 porpoises (95% C.I. 900-3500) is 6.2% of the estimated number of porpoises in the Celtic Sea and there is serious cause for concern about the ability of the population to which they belong to sustain this level of by-catch. (C) 1997 International Council for the Exploration of the Sea. |
format |
Article in Journal/Newspaper |
author |
Tregenza, NJC Berrow, SD Hammond, Philip Steven Leaper, R |
author_facet |
Tregenza, NJC Berrow, SD Hammond, Philip Steven Leaper, R |
author_sort |
Tregenza, NJC |
title |
Harbour porpoise, Phocoena phocoena L., bycatch in set gill nets in the Celtic Sea |
title_short |
Harbour porpoise, Phocoena phocoena L., bycatch in set gill nets in the Celtic Sea |
title_full |
Harbour porpoise, Phocoena phocoena L., bycatch in set gill nets in the Celtic Sea |
title_fullStr |
Harbour porpoise, Phocoena phocoena L., bycatch in set gill nets in the Celtic Sea |
title_full_unstemmed |
Harbour porpoise, Phocoena phocoena L., bycatch in set gill nets in the Celtic Sea |
title_sort |
harbour porpoise, phocoena phocoena l., bycatch in set gill nets in the celtic sea |
publishDate |
1997 |
url |
https://risweb.st-andrews.ac.uk/portal/en/researchoutput/harbour-porpoise-phocoena-phocoena-l-bycatch-in-set-gill-nets-in-the-celtic-sea(95bc4137-fc65-4b7a-ad64-932bc3e5c659).html http://www.scopus.com/inward/record.url?scp=0031251810&partnerID=8YFLogxK |
genre |
Harbour porpoise North Atlantic Phocoena phocoena |
genre_facet |
Harbour porpoise North Atlantic Phocoena phocoena |
op_source |
Tregenza , NJC , Berrow , SD , Hammond , P S & Leaper , R 1997 , ' Harbour porpoise, Phocoena phocoena L., bycatch in set gill nets in the Celtic Sea ' , ICES Journal of Marine Science , vol. 54 , pp. 896-904 . |
op_rights |
info:eu-repo/semantics/restrictedAccess |
_version_ |
1766023043517251584 |