Abundance of Atlantic walrus in Western Nares Strait, Baffin Bay Stock, during summer
Atlantic walruses (Odobenus rosmarus rosmarus) belonging to the Baffin Bay subpopulation occur year round in the North Water polynya (NOW) between NW Greenland and eastern Ellesmere Island (Canada). They are hunted for subsistence purposes by residents of the Qaanaaq area (NW Greenland) bordering th...
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Language: | English |
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Septentrio Academic Publishing
2014
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Online Access: | https://septentrio.uit.no/index.php/NAMMCOSP/article/view/2611 https://doi.org/10.7557/3.2611 |
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ftunitroemsoe:oai:ojs.henry.ub.uit.no:article/2611 2023-05-15T15:35:00+02:00 Abundance of Atlantic walrus in Western Nares Strait, Baffin Bay Stock, during summer Stewart, Robert EA Born, Erik W Dietz, Rune Heide-Jørgensen, Mads Peter Rigét, Frank Farsø Laidre, Kristin Jensen, Mikkel Villum Knutsen, Lars Ø Fossette, Sabrina Dunn, J B 2014-12-15 application/pdf https://septentrio.uit.no/index.php/NAMMCOSP/article/view/2611 https://doi.org/10.7557/3.2611 eng eng Septentrio Academic Publishing https://septentrio.uit.no/index.php/NAMMCOSP/article/view/2611/3279 https://septentrio.uit.no/index.php/NAMMCOSP/article/view/2611 doi:10.7557/3.2611 Copyright (c) 2014 Robert EA Stewart, Erik W Born, Rune Dietz, Mads Peter Heide-Jørgensen, Frank Farsø Rigét, Kristin Laidre, Mikkel Villum Jensen, Lars Ø Knutsen, Sabrina Fossette, J B Dunn http://creativecommons.org/licenses/by/3.0/ CC-BY NAMMCO Scientific Publications; Vol 9: Walrus of the North Atlantic; 123-140 2309-2491 1560-2206 10.7557/3.9 Atlantic walrus walrus Odobenus rosmarus rosmarus North Water Canada Greenland abundance aerial surveys tagging satellite-linked info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2014 ftunitroemsoe https://doi.org/10.7557/3.2611 https://doi.org/10.7557/3.9 2021-08-16T16:36:30Z Atlantic walruses (Odobenus rosmarus rosmarus) belonging to the Baffin Bay subpopulation occur year round in the North Water polynya (NOW) between NW Greenland and eastern Ellesmere Island (Canada). They are hunted for subsistence purposes by residents of the Qaanaaq area (NW Greenland) bordering the NOW to the east and by Canadian Inuit at the entrance to Jones Sound in Nunavut. During the open-water period NW Greenland is virtually devoid of walruses which concentrate along eastern and southern Ellesmere Island at this time of the year. To determine the abundance of walruses in the NOW area, aerial surveys were conducted in August of 1999, 2008, and 2009. In July 2009, nine satellite-linked transmitters were deployed in nearby Kane Basin. Surveys on 9 and 20 August 2009 along eastern Ellesmere Island were the most extensive and were augmented with concomitant data on haul-out and at water surface activity from three (1 F, 2 M) of the nine tags that were still functioning. We therefore focus on the 2009 surveys. Walruses were observed on the ice and in water primarily in Buchanan Bay and Princess Marie Bay where the remaining functional tags were located. The Minimum Counted population (MCP) was 571 on 20 August. Adjusting the MCP of walruses on ice for those not hauled out, the estimate of abundance of walruses in the Baffin Bay stock was 1,251(CV=1.00, 95% CI = 1,226) when adjusted by the proportion of tags ‘dry’ at the time of the survey and 1,249 (CV=1.12, 95% CI = 1,370) when adjusted by the average time tags were dry. The surveys did not cover all potential walrus summering habitat along eastern Ellesmere Island and are negatively biased to an unknown degree. Article in Journal/Newspaper Baffin Bay Baffin Bay Baffin Buchanan Bay Ellesmere Island Greenland inuit Jones Sound Kane Basin Marie Bay Nares strait Nunavut Odobenus rosmarus Princess Marie Bay Qaanaaq walrus* University of Tromsø: Septentrio Academic Publishing Baffin Bay Buchanan Bay ENVELOPE(144.667,144.667,-67.083,-67.083) Canada Ellesmere Island Greenland Jones Sound ENVELOPE(-86.000,-86.000,76.002,76.002) Kane ENVELOPE(-63.038,-63.038,-73.952,-73.952) Marie Bay ENVELOPE(-115.345,-115.345,76.216,76.216) Nares ENVELOPE(158.167,158.167,-81.450,-81.450) Nunavut Princess Marie Bay ENVELOPE(-75.997,-75.997,79.335,79.335) Qaanaaq ENVELOPE(-69.232,-69.232,77.467,77.467) NAMMCO Scientific Publications 9 123 |
institution |
Open Polar |
collection |
University of Tromsø: Septentrio Academic Publishing |
op_collection_id |
ftunitroemsoe |
language |
English |
topic |
Atlantic walrus walrus Odobenus rosmarus rosmarus North Water Canada Greenland abundance aerial surveys tagging satellite-linked |
spellingShingle |
Atlantic walrus walrus Odobenus rosmarus rosmarus North Water Canada Greenland abundance aerial surveys tagging satellite-linked Stewart, Robert EA Born, Erik W Dietz, Rune Heide-Jørgensen, Mads Peter Rigét, Frank Farsø Laidre, Kristin Jensen, Mikkel Villum Knutsen, Lars Ø Fossette, Sabrina Dunn, J B Abundance of Atlantic walrus in Western Nares Strait, Baffin Bay Stock, during summer |
topic_facet |
Atlantic walrus walrus Odobenus rosmarus rosmarus North Water Canada Greenland abundance aerial surveys tagging satellite-linked |
description |
Atlantic walruses (Odobenus rosmarus rosmarus) belonging to the Baffin Bay subpopulation occur year round in the North Water polynya (NOW) between NW Greenland and eastern Ellesmere Island (Canada). They are hunted for subsistence purposes by residents of the Qaanaaq area (NW Greenland) bordering the NOW to the east and by Canadian Inuit at the entrance to Jones Sound in Nunavut. During the open-water period NW Greenland is virtually devoid of walruses which concentrate along eastern and southern Ellesmere Island at this time of the year. To determine the abundance of walruses in the NOW area, aerial surveys were conducted in August of 1999, 2008, and 2009. In July 2009, nine satellite-linked transmitters were deployed in nearby Kane Basin. Surveys on 9 and 20 August 2009 along eastern Ellesmere Island were the most extensive and were augmented with concomitant data on haul-out and at water surface activity from three (1 F, 2 M) of the nine tags that were still functioning. We therefore focus on the 2009 surveys. Walruses were observed on the ice and in water primarily in Buchanan Bay and Princess Marie Bay where the remaining functional tags were located. The Minimum Counted population (MCP) was 571 on 20 August. Adjusting the MCP of walruses on ice for those not hauled out, the estimate of abundance of walruses in the Baffin Bay stock was 1,251(CV=1.00, 95% CI = 1,226) when adjusted by the proportion of tags ‘dry’ at the time of the survey and 1,249 (CV=1.12, 95% CI = 1,370) when adjusted by the average time tags were dry. The surveys did not cover all potential walrus summering habitat along eastern Ellesmere Island and are negatively biased to an unknown degree. |
format |
Article in Journal/Newspaper |
author |
Stewart, Robert EA Born, Erik W Dietz, Rune Heide-Jørgensen, Mads Peter Rigét, Frank Farsø Laidre, Kristin Jensen, Mikkel Villum Knutsen, Lars Ø Fossette, Sabrina Dunn, J B |
author_facet |
Stewart, Robert EA Born, Erik W Dietz, Rune Heide-Jørgensen, Mads Peter Rigét, Frank Farsø Laidre, Kristin Jensen, Mikkel Villum Knutsen, Lars Ø Fossette, Sabrina Dunn, J B |
author_sort |
Stewart, Robert EA |
title |
Abundance of Atlantic walrus in Western Nares Strait, Baffin Bay Stock, during summer |
title_short |
Abundance of Atlantic walrus in Western Nares Strait, Baffin Bay Stock, during summer |
title_full |
Abundance of Atlantic walrus in Western Nares Strait, Baffin Bay Stock, during summer |
title_fullStr |
Abundance of Atlantic walrus in Western Nares Strait, Baffin Bay Stock, during summer |
title_full_unstemmed |
Abundance of Atlantic walrus in Western Nares Strait, Baffin Bay Stock, during summer |
title_sort |
abundance of atlantic walrus in western nares strait, baffin bay stock, during summer |
publisher |
Septentrio Academic Publishing |
publishDate |
2014 |
url |
https://septentrio.uit.no/index.php/NAMMCOSP/article/view/2611 https://doi.org/10.7557/3.2611 |
long_lat |
ENVELOPE(144.667,144.667,-67.083,-67.083) ENVELOPE(-86.000,-86.000,76.002,76.002) ENVELOPE(-63.038,-63.038,-73.952,-73.952) ENVELOPE(-115.345,-115.345,76.216,76.216) ENVELOPE(158.167,158.167,-81.450,-81.450) ENVELOPE(-75.997,-75.997,79.335,79.335) ENVELOPE(-69.232,-69.232,77.467,77.467) |
geographic |
Baffin Bay Buchanan Bay Canada Ellesmere Island Greenland Jones Sound Kane Marie Bay Nares Nunavut Princess Marie Bay Qaanaaq |
geographic_facet |
Baffin Bay Buchanan Bay Canada Ellesmere Island Greenland Jones Sound Kane Marie Bay Nares Nunavut Princess Marie Bay Qaanaaq |
genre |
Baffin Bay Baffin Bay Baffin Buchanan Bay Ellesmere Island Greenland inuit Jones Sound Kane Basin Marie Bay Nares strait Nunavut Odobenus rosmarus Princess Marie Bay Qaanaaq walrus* |
genre_facet |
Baffin Bay Baffin Bay Baffin Buchanan Bay Ellesmere Island Greenland inuit Jones Sound Kane Basin Marie Bay Nares strait Nunavut Odobenus rosmarus Princess Marie Bay Qaanaaq walrus* |
op_source |
NAMMCO Scientific Publications; Vol 9: Walrus of the North Atlantic; 123-140 2309-2491 1560-2206 10.7557/3.9 |
op_relation |
https://septentrio.uit.no/index.php/NAMMCOSP/article/view/2611/3279 https://septentrio.uit.no/index.php/NAMMCOSP/article/view/2611 doi:10.7557/3.2611 |
op_rights |
Copyright (c) 2014 Robert EA Stewart, Erik W Born, Rune Dietz, Mads Peter Heide-Jørgensen, Frank Farsø Rigét, Kristin Laidre, Mikkel Villum Jensen, Lars Ø Knutsen, Sabrina Fossette, J B Dunn http://creativecommons.org/licenses/by/3.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.7557/3.2611 https://doi.org/10.7557/3.9 |
container_title |
NAMMCO Scientific Publications |
container_volume |
9 |
container_start_page |
123 |
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1766365288688779264 |