Foraging by murres (Uria spp.) at tidal fronts surrounding the Pribilof Islands, Alaska, USA
We investigated the foraging distribution of 2 species of murres (Uria lomvia and U. aalge) in relation to Acoustically Determined Biomass (ADB) and hydrographic structure surrounding the Pribilof Islands, Bering Sea, Alaska, USA. The distribution and abundance of both murre species were similar; th...
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Language: | English |
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1996
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ftcdlib:qt2r4974ff 2023-05-15T15:43:26+02:00 Foraging by murres (Uria spp.) at tidal fronts surrounding the Pribilof Islands, Alaska, USA Decker, MB Hunt, GL 1 - 10 1996-08-29 application/pdf http://www.escholarship.org/uc/item/2r4974ff english eng eScholarship, University of California qt2r4974ff http://www.escholarship.org/uc/item/2r4974ff Attribution (CC BY): http://creativecommons.org/licenses/by/3.0/ CC-BY Decker, MB; & Hunt, GL. (1996). Foraging by murres (Uria spp.) at tidal fronts surrounding the Pribilof Islands, Alaska, USA. Marine Ecology Progress Series, 139(1-3), 1 - 10. doi:10.3354/meps139001. UC Irvine: Retrieved from: http://www.escholarship.org/uc/item/2r4974ff seabird distribution tidal fronts Uria lomvia Uria aalge murres Bering Sea article 1996 ftcdlib https://doi.org/10.3354/meps139001 2017-10-27T22:50:27Z We investigated the foraging distribution of 2 species of murres (Uria lomvia and U. aalge) in relation to Acoustically Determined Biomass (ADB) and hydrographic structure surrounding the Pribilof Islands, Bering Sea, Alaska, USA. The distribution and abundance of both murre species were similar; therefore, we combined data for thick-billed and common murres in the analysis. We found that murre densities were higher in frontal regions than in non frontal regions. Maximum ADB was also found to be elevated in the frontal zone. Within frontal regions, high densities of murres were associated with regions containing relatively high levels of ADB. In contrast, we did not find significant correlations between murre density and ADB in the study area as a whole. We postulate that murres restrict their foraging to the frontal region because prey can be located more predictably within this zone than in other areas in the vicinity of the Pribilof Islands. Article in Journal/Newspaper Bering Sea Uria aalge Uria lomvia Alaska uria University of California: eScholarship Bering Sea Marine Ecology Progress Series 139 1 10 |
institution |
Open Polar |
collection |
University of California: eScholarship |
op_collection_id |
ftcdlib |
language |
English |
topic |
seabird distribution tidal fronts Uria lomvia Uria aalge murres Bering Sea |
spellingShingle |
seabird distribution tidal fronts Uria lomvia Uria aalge murres Bering Sea Decker, MB Hunt, GL Foraging by murres (Uria spp.) at tidal fronts surrounding the Pribilof Islands, Alaska, USA |
topic_facet |
seabird distribution tidal fronts Uria lomvia Uria aalge murres Bering Sea |
description |
We investigated the foraging distribution of 2 species of murres (Uria lomvia and U. aalge) in relation to Acoustically Determined Biomass (ADB) and hydrographic structure surrounding the Pribilof Islands, Bering Sea, Alaska, USA. The distribution and abundance of both murre species were similar; therefore, we combined data for thick-billed and common murres in the analysis. We found that murre densities were higher in frontal regions than in non frontal regions. Maximum ADB was also found to be elevated in the frontal zone. Within frontal regions, high densities of murres were associated with regions containing relatively high levels of ADB. In contrast, we did not find significant correlations between murre density and ADB in the study area as a whole. We postulate that murres restrict their foraging to the frontal region because prey can be located more predictably within this zone than in other areas in the vicinity of the Pribilof Islands. |
format |
Article in Journal/Newspaper |
author |
Decker, MB Hunt, GL |
author_facet |
Decker, MB Hunt, GL |
author_sort |
Decker, MB |
title |
Foraging by murres (Uria spp.) at tidal fronts surrounding the Pribilof Islands, Alaska, USA |
title_short |
Foraging by murres (Uria spp.) at tidal fronts surrounding the Pribilof Islands, Alaska, USA |
title_full |
Foraging by murres (Uria spp.) at tidal fronts surrounding the Pribilof Islands, Alaska, USA |
title_fullStr |
Foraging by murres (Uria spp.) at tidal fronts surrounding the Pribilof Islands, Alaska, USA |
title_full_unstemmed |
Foraging by murres (Uria spp.) at tidal fronts surrounding the Pribilof Islands, Alaska, USA |
title_sort |
foraging by murres (uria spp.) at tidal fronts surrounding the pribilof islands, alaska, usa |
publisher |
eScholarship, University of California |
publishDate |
1996 |
url |
http://www.escholarship.org/uc/item/2r4974ff |
op_coverage |
1 - 10 |
geographic |
Bering Sea |
geographic_facet |
Bering Sea |
genre |
Bering Sea Uria aalge Uria lomvia Alaska uria |
genre_facet |
Bering Sea Uria aalge Uria lomvia Alaska uria |
op_source |
Decker, MB; & Hunt, GL. (1996). Foraging by murres (Uria spp.) at tidal fronts surrounding the Pribilof Islands, Alaska, USA. Marine Ecology Progress Series, 139(1-3), 1 - 10. doi:10.3354/meps139001. UC Irvine: Retrieved from: http://www.escholarship.org/uc/item/2r4974ff |
op_relation |
qt2r4974ff http://www.escholarship.org/uc/item/2r4974ff |
op_rights |
Attribution (CC BY): http://creativecommons.org/licenses/by/3.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3354/meps139001 |
container_title |
Marine Ecology Progress Series |
container_volume |
139 |
container_start_page |
1 |
op_container_end_page |
10 |
_version_ |
1766377562616889344 |