Pacific walrus (Odobenus rosmarus divergens) resource selection in the Northern Bering Sea.
The Pacific walrus is a large benthivore with an annual range extending across the continental shelves of the Bering and Chukchi Seas. We used a discrete choice model to estimate site selection by adult radio-tagged walruses relative to the availability of the caloric biomass of benthic infauna and...
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ftdoajarticles:oai:doaj.org/article:12cbefbe22994f16833afab1a09d19a3 2023-05-15T15:43:17+02:00 Pacific walrus (Odobenus rosmarus divergens) resource selection in the Northern Bering Sea. Chadwick V Jay Jacqueline M Grebmeier Anthony S Fischbach Trent L McDonald Lee W Cooper Fawn Hornsby 2014-01-01T00:00:00Z https://doi.org/10.1371/journal.pone.0093035 https://doaj.org/article/12cbefbe22994f16833afab1a09d19a3 EN eng Public Library of Science (PLoS) http://europepmc.org/articles/PMC3981674?pdf=render https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0093035 https://doaj.org/article/12cbefbe22994f16833afab1a09d19a3 PLoS ONE, Vol 9, Iss 4, p e93035 (2014) Medicine R Science Q article 2014 ftdoajarticles https://doi.org/10.1371/journal.pone.0093035 2022-12-31T13:04:03Z The Pacific walrus is a large benthivore with an annual range extending across the continental shelves of the Bering and Chukchi Seas. We used a discrete choice model to estimate site selection by adult radio-tagged walruses relative to the availability of the caloric biomass of benthic infauna and sea ice concentration in a prominent walrus wintering area in the northern Bering Sea (St. Lawrence Island polynya) in 2006, 2008, and 2009. At least 60% of the total caloric biomass of dominant macroinfauna in the study area was composed of members of the bivalve families Nuculidae, Tellinidae, and Nuculanidae. Model estimates indicated walrus site selection was related most strongly to tellinid bivalve caloric biomass distribution and that walruses selected lower ice concentrations from the mostly high ice concentrations that were available to them (quartiles: 76%, 93%, and 99%). Areas with high average predicted walrus site selection generally coincided with areas of high organic carbon input identified in other studies. Projected decreases in sea ice in the St. Lawrence Island polynya and the potential for a concomitant decline of bivalves in the region could result in a northward shift in the wintering grounds of walruses in the northern Bering Sea. Article in Journal/Newspaper Bering Sea Chukchi Odobenus rosmarus Sea ice St Lawrence Island walrus* Directory of Open Access Journals: DOAJ Articles Bering Sea Pacific Lawrence Island ENVELOPE(-103.718,-103.718,56.967,56.967) PLoS ONE 9 4 e93035 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Medicine R Science Q |
spellingShingle |
Medicine R Science Q Chadwick V Jay Jacqueline M Grebmeier Anthony S Fischbach Trent L McDonald Lee W Cooper Fawn Hornsby Pacific walrus (Odobenus rosmarus divergens) resource selection in the Northern Bering Sea. |
topic_facet |
Medicine R Science Q |
description |
The Pacific walrus is a large benthivore with an annual range extending across the continental shelves of the Bering and Chukchi Seas. We used a discrete choice model to estimate site selection by adult radio-tagged walruses relative to the availability of the caloric biomass of benthic infauna and sea ice concentration in a prominent walrus wintering area in the northern Bering Sea (St. Lawrence Island polynya) in 2006, 2008, and 2009. At least 60% of the total caloric biomass of dominant macroinfauna in the study area was composed of members of the bivalve families Nuculidae, Tellinidae, and Nuculanidae. Model estimates indicated walrus site selection was related most strongly to tellinid bivalve caloric biomass distribution and that walruses selected lower ice concentrations from the mostly high ice concentrations that were available to them (quartiles: 76%, 93%, and 99%). Areas with high average predicted walrus site selection generally coincided with areas of high organic carbon input identified in other studies. Projected decreases in sea ice in the St. Lawrence Island polynya and the potential for a concomitant decline of bivalves in the region could result in a northward shift in the wintering grounds of walruses in the northern Bering Sea. |
format |
Article in Journal/Newspaper |
author |
Chadwick V Jay Jacqueline M Grebmeier Anthony S Fischbach Trent L McDonald Lee W Cooper Fawn Hornsby |
author_facet |
Chadwick V Jay Jacqueline M Grebmeier Anthony S Fischbach Trent L McDonald Lee W Cooper Fawn Hornsby |
author_sort |
Chadwick V Jay |
title |
Pacific walrus (Odobenus rosmarus divergens) resource selection in the Northern Bering Sea. |
title_short |
Pacific walrus (Odobenus rosmarus divergens) resource selection in the Northern Bering Sea. |
title_full |
Pacific walrus (Odobenus rosmarus divergens) resource selection in the Northern Bering Sea. |
title_fullStr |
Pacific walrus (Odobenus rosmarus divergens) resource selection in the Northern Bering Sea. |
title_full_unstemmed |
Pacific walrus (Odobenus rosmarus divergens) resource selection in the Northern Bering Sea. |
title_sort |
pacific walrus (odobenus rosmarus divergens) resource selection in the northern bering sea. |
publisher |
Public Library of Science (PLoS) |
publishDate |
2014 |
url |
https://doi.org/10.1371/journal.pone.0093035 https://doaj.org/article/12cbefbe22994f16833afab1a09d19a3 |
long_lat |
ENVELOPE(-103.718,-103.718,56.967,56.967) |
geographic |
Bering Sea Pacific Lawrence Island |
geographic_facet |
Bering Sea Pacific Lawrence Island |
genre |
Bering Sea Chukchi Odobenus rosmarus Sea ice St Lawrence Island walrus* |
genre_facet |
Bering Sea Chukchi Odobenus rosmarus Sea ice St Lawrence Island walrus* |
op_source |
PLoS ONE, Vol 9, Iss 4, p e93035 (2014) |
op_relation |
http://europepmc.org/articles/PMC3981674?pdf=render https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0093035 https://doaj.org/article/12cbefbe22994f16833afab1a09d19a3 |
op_doi |
https://doi.org/10.1371/journal.pone.0093035 |
container_title |
PLoS ONE |
container_volume |
9 |
container_issue |
4 |
container_start_page |
e93035 |
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1766377348380229632 |