Foraging ecology of short-tailed shearwaters near the Pribilof Islands, Bering Sea
We studied short-tailed shearwaters Puffinus tenuirostris foraging near the Pribilof Islands, Alaska, USA, during the summers of 1987, 1988, and 1989. Their foods were almost exclusively the euphausiid Thysanoessa raschii, which they obtained both from near-surface swarms and from epibenthic layers....
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1996
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Online Access: | https://escholarship.org/uc/item/1pv5j6j5 https://escholarship.org/content/qt1pv5j6j5/qt1pv5j6j5.pdf https://doi.org/10.3354/meps141001 |
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ftcdlib:oai:escholarship.org:ark:/13030/qt1pv5j6j5 2024-09-15T17:59:25+00:00 Foraging ecology of short-tailed shearwaters near the Pribilof Islands, Bering Sea Hunt, GL Coyle, KO Hoffman, S Decker, MB Flint, EN 1 - 11 1996-01-01 application/pdf https://escholarship.org/uc/item/1pv5j6j5 https://escholarship.org/content/qt1pv5j6j5/qt1pv5j6j5.pdf https://doi.org/10.3354/meps141001 unknown eScholarship, University of California qt1pv5j6j5 https://escholarship.org/uc/item/1pv5j6j5 https://escholarship.org/content/qt1pv5j6j5/qt1pv5j6j5.pdf doi:10.3354/meps141001 CC-BY Marine Ecology Progress Series, vol 141, iss 1-3 short-tailed shearwater Puffinus tenuirostris euphausiids Thysanoessa raschii seabird foraging fronts Bering Sea Oceanography Ecology Zoology Marine Biology & Hydrobiology article 1996 ftcdlib https://doi.org/10.3354/meps141001 2024-06-28T06:28:19Z We studied short-tailed shearwaters Puffinus tenuirostris foraging near the Pribilof Islands, Alaska, USA, during the summers of 1987, 1988, and 1989. Their foods were almost exclusively the euphausiid Thysanoessa raschii, which they obtained both from near-surface swarms and from epibenthic layers. Near-surface mating swarms of euphausiids occurred in areas of elevated phytoplankton standing stocks near inshore tidal fronts. Many of these euphausiids had attached spermatophores. Shearwaters also obtained euphausiids over shallow reefs and inshore of the fronts where euphausiids were trapped in water shallower than 40 m by irregularities in bottom topography ('bathymetric traps'). We hypothesize that the largely inshore distribution of shearwaters in the southeastern Bering Sea described by previous workers is the result of attraction of shearwaters to frontal areas where euphausiids may forage on phytoplankton stocks throughout the summer. These areas, when shallower than 40 m, would also permit shearwaters to access epibenthic aggregations of euphausiids during daylight, when euphausiids not engaged in mating swarms usually migrate to depth. Article in Journal/Newspaper Bering Sea Puffinus tenuirostris Thysanoessa raschii Alaska University of California: eScholarship Marine Ecology Progress Series 141 1 11 |
institution |
Open Polar |
collection |
University of California: eScholarship |
op_collection_id |
ftcdlib |
language |
unknown |
topic |
short-tailed shearwater Puffinus tenuirostris euphausiids Thysanoessa raschii seabird foraging fronts Bering Sea Oceanography Ecology Zoology Marine Biology & Hydrobiology |
spellingShingle |
short-tailed shearwater Puffinus tenuirostris euphausiids Thysanoessa raschii seabird foraging fronts Bering Sea Oceanography Ecology Zoology Marine Biology & Hydrobiology Hunt, GL Coyle, KO Hoffman, S Decker, MB Flint, EN Foraging ecology of short-tailed shearwaters near the Pribilof Islands, Bering Sea |
topic_facet |
short-tailed shearwater Puffinus tenuirostris euphausiids Thysanoessa raschii seabird foraging fronts Bering Sea Oceanography Ecology Zoology Marine Biology & Hydrobiology |
description |
We studied short-tailed shearwaters Puffinus tenuirostris foraging near the Pribilof Islands, Alaska, USA, during the summers of 1987, 1988, and 1989. Their foods were almost exclusively the euphausiid Thysanoessa raschii, which they obtained both from near-surface swarms and from epibenthic layers. Near-surface mating swarms of euphausiids occurred in areas of elevated phytoplankton standing stocks near inshore tidal fronts. Many of these euphausiids had attached spermatophores. Shearwaters also obtained euphausiids over shallow reefs and inshore of the fronts where euphausiids were trapped in water shallower than 40 m by irregularities in bottom topography ('bathymetric traps'). We hypothesize that the largely inshore distribution of shearwaters in the southeastern Bering Sea described by previous workers is the result of attraction of shearwaters to frontal areas where euphausiids may forage on phytoplankton stocks throughout the summer. These areas, when shallower than 40 m, would also permit shearwaters to access epibenthic aggregations of euphausiids during daylight, when euphausiids not engaged in mating swarms usually migrate to depth. |
format |
Article in Journal/Newspaper |
author |
Hunt, GL Coyle, KO Hoffman, S Decker, MB Flint, EN |
author_facet |
Hunt, GL Coyle, KO Hoffman, S Decker, MB Flint, EN |
author_sort |
Hunt, GL |
title |
Foraging ecology of short-tailed shearwaters near the Pribilof Islands, Bering Sea |
title_short |
Foraging ecology of short-tailed shearwaters near the Pribilof Islands, Bering Sea |
title_full |
Foraging ecology of short-tailed shearwaters near the Pribilof Islands, Bering Sea |
title_fullStr |
Foraging ecology of short-tailed shearwaters near the Pribilof Islands, Bering Sea |
title_full_unstemmed |
Foraging ecology of short-tailed shearwaters near the Pribilof Islands, Bering Sea |
title_sort |
foraging ecology of short-tailed shearwaters near the pribilof islands, bering sea |
publisher |
eScholarship, University of California |
publishDate |
1996 |
url |
https://escholarship.org/uc/item/1pv5j6j5 https://escholarship.org/content/qt1pv5j6j5/qt1pv5j6j5.pdf https://doi.org/10.3354/meps141001 |
op_coverage |
1 - 11 |
genre |
Bering Sea Puffinus tenuirostris Thysanoessa raschii Alaska |
genre_facet |
Bering Sea Puffinus tenuirostris Thysanoessa raschii Alaska |
op_source |
Marine Ecology Progress Series, vol 141, iss 1-3 |
op_relation |
qt1pv5j6j5 https://escholarship.org/uc/item/1pv5j6j5 https://escholarship.org/content/qt1pv5j6j5/qt1pv5j6j5.pdf doi:10.3354/meps141001 |
op_rights |
CC-BY |
op_doi |
https://doi.org/10.3354/meps141001 |
container_title |
Marine Ecology Progress Series |
container_volume |
141 |
container_start_page |
1 |
op_container_end_page |
11 |
_version_ |
1810436513825030144 |