Harbour porpoise (Phocoena phocoena) in the North Atlantic: Abundance, removals, and sustainability of removals
The status of harbour porpoise (Phocoena phocoena) populations in the North Atlantic has raised numerous concerns. Although a number of factors that may be adversely affecting harbour porpoise populations have been identified, focus has been on the impact of removals, primarily due to incidental cat...
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Septentrio Academic Publishing
2003
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ftunitroemsoe:oai:ojs.henry.ub.uit.no:article/2830 2023-05-15T16:33:12+02:00 Harbour porpoise (Phocoena phocoena) in the North Atlantic: Abundance, removals, and sustainability of removals Stenson, G B 2003-07-01 application/pdf https://septentrio.uit.no/index.php/NAMMCOSP/article/view/2830 https://doi.org/10.7557/3.2830 eng eng Septentrio Academic Publishing https://septentrio.uit.no/index.php/NAMMCOSP/article/view/2830/2683 https://septentrio.uit.no/index.php/NAMMCOSP/article/view/2830 doi:10.7557/3.2830 Copyright (c) 2003 G B Stenson http://creativecommons.org/licenses/by/3.0/ CC-BY NAMMCO Scientific Publications; Vol 5: Harbour porpoises in the North Atlantic; 271-302 2309-2491 1560-2206 10.7557/3.5 harbour porpoise bycatch info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2003 ftunitroemsoe https://doi.org/10.7557/3.2830 https://doi.org/10.7557/3.5 2021-08-16T16:40:14Z The status of harbour porpoise (Phocoena phocoena) populations in the North Atlantic has raised numerous concerns. Although a number of factors that may be adversely affecting harbour porpoise populations have been identified, focus has been on the impact of removals, primarily due to incidental catches in fishing gear. As a result, considerable efforts have been made to determine the levels and/or impact of bycatch in a number of areas. Unfortunately, many areas remain little studied. Currently, harbour porpoise are listed as threatened or vulnerable in many parts of their range. In order to determine if the current levels of removals are sustainable, information on stock identity and seasonal movements, population parameters, abundance, and the magnitude of removals is required. Although substantial progress has been made to improve our knowledge of these parameters in the last decade, significant gaps still exist. After reviewing the available data for each sub-population in the North Atlantic, it is clear that the information required to assess the status of harbour porpoise populations is still not available for most areas. Attempts have been made to assess the status of harbour porpoise based on trends in sightings or, in areas where information on abundance and bycatch are available, on models using arbitrary criteria and/or theoretical estimates of potential population growth. Detailed case-specific population models have been proposed but are not yet available. Article in Journal/Newspaper Harbour porpoise North Atlantic Phocoena phocoena University of Tromsø: Septentrio Academic Publishing NAMMCO Scientific Publications 5 271 |
institution |
Open Polar |
collection |
University of Tromsø: Septentrio Academic Publishing |
op_collection_id |
ftunitroemsoe |
language |
English |
topic |
harbour porpoise bycatch |
spellingShingle |
harbour porpoise bycatch Stenson, G B Harbour porpoise (Phocoena phocoena) in the North Atlantic: Abundance, removals, and sustainability of removals |
topic_facet |
harbour porpoise bycatch |
description |
The status of harbour porpoise (Phocoena phocoena) populations in the North Atlantic has raised numerous concerns. Although a number of factors that may be adversely affecting harbour porpoise populations have been identified, focus has been on the impact of removals, primarily due to incidental catches in fishing gear. As a result, considerable efforts have been made to determine the levels and/or impact of bycatch in a number of areas. Unfortunately, many areas remain little studied. Currently, harbour porpoise are listed as threatened or vulnerable in many parts of their range. In order to determine if the current levels of removals are sustainable, information on stock identity and seasonal movements, population parameters, abundance, and the magnitude of removals is required. Although substantial progress has been made to improve our knowledge of these parameters in the last decade, significant gaps still exist. After reviewing the available data for each sub-population in the North Atlantic, it is clear that the information required to assess the status of harbour porpoise populations is still not available for most areas. Attempts have been made to assess the status of harbour porpoise based on trends in sightings or, in areas where information on abundance and bycatch are available, on models using arbitrary criteria and/or theoretical estimates of potential population growth. Detailed case-specific population models have been proposed but are not yet available. |
format |
Article in Journal/Newspaper |
author |
Stenson, G B |
author_facet |
Stenson, G B |
author_sort |
Stenson, G B |
title |
Harbour porpoise (Phocoena phocoena) in the North Atlantic: Abundance, removals, and sustainability of removals |
title_short |
Harbour porpoise (Phocoena phocoena) in the North Atlantic: Abundance, removals, and sustainability of removals |
title_full |
Harbour porpoise (Phocoena phocoena) in the North Atlantic: Abundance, removals, and sustainability of removals |
title_fullStr |
Harbour porpoise (Phocoena phocoena) in the North Atlantic: Abundance, removals, and sustainability of removals |
title_full_unstemmed |
Harbour porpoise (Phocoena phocoena) in the North Atlantic: Abundance, removals, and sustainability of removals |
title_sort |
harbour porpoise (phocoena phocoena) in the north atlantic: abundance, removals, and sustainability of removals |
publisher |
Septentrio Academic Publishing |
publishDate |
2003 |
url |
https://septentrio.uit.no/index.php/NAMMCOSP/article/view/2830 https://doi.org/10.7557/3.2830 |
genre |
Harbour porpoise North Atlantic Phocoena phocoena |
genre_facet |
Harbour porpoise North Atlantic Phocoena phocoena |
op_source |
NAMMCO Scientific Publications; Vol 5: Harbour porpoises in the North Atlantic; 271-302 2309-2491 1560-2206 10.7557/3.5 |
op_relation |
https://septentrio.uit.no/index.php/NAMMCOSP/article/view/2830/2683 https://septentrio.uit.no/index.php/NAMMCOSP/article/view/2830 doi:10.7557/3.2830 |
op_rights |
Copyright (c) 2003 G B Stenson http://creativecommons.org/licenses/by/3.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.7557/3.2830 https://doi.org/10.7557/3.5 |
container_title |
NAMMCO Scientific Publications |
container_volume |
5 |
container_start_page |
271 |
_version_ |
1766022908669329408 |