Spotted Seals, Phoca largha, in Alaska
The worldwide literature on management of spotted seals, Phoca largha, was reviewed and updated, and aerial surveys weref lown in 1992 and 1993 to determine the species' distribution and abundance in U.S. waters. In April, spotted seals were found only in the Bering Sea ice front. In June, they...
Main Authors: | , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
1997
|
Subjects: | |
Online Access: | http://hdl.handle.net/1834/26448 |
id |
ftoceandocs:oai:aquadocs.org:1834/26448 |
---|---|
record_format |
openpolar |
spelling |
ftoceandocs:oai:aquadocs.org:1834/26448 2023-05-15T15:43:31+02:00 Spotted Seals, Phoca largha, in Alaska Rugh, David J. Shelden, Kim E. W. Withrow, David E. 1997 application/pdf 1-18 http://hdl.handle.net/1834/26448 en eng http://spo.nmfs.noaa.gov/mfr591/mfr5911.pdf 0090-1830 http://hdl.handle.net/1834/26448 http://aquaticcommons.org/id/eprint/9823 403 2012-08-16 14:24:30 9823 United States National Marine Fisheries Service Biology Ecology Fisheries article TRUE 1997 ftoceandocs 2023-04-06T17:03:12Z The worldwide literature on management of spotted seals, Phoca largha, was reviewed and updated, and aerial surveys weref lown in 1992 and 1993 to determine the species' distribution and abundance in U.S. waters. In April, spotted seals were found only in the Bering Sea ice front. In June, they were seen along deteriorating ice floes and fast ice in Norton Sound. Surveys along most of Alaska's western coast in August and September found over 2,500 spotted seals in Kuskokwim Bay and concentrations of 100-400 seals around Nunivak Island, Scammon Bay, Golovnin Bay/Norton Sound, Cape Espenberg/Kotzebue Sound, and Kasegaluk Lagoon. All of these sites have been used by spotted seals in the past. The sum of the highest counts, irrespective of year, was 3,570 seals (CV =0.06). This is not an abundance estimate for all spotted seals in the Bering Sea, because it does not account for animals in the water, and we did not survey the Asian coast and some islands. Also, spotted seals and harbor seals, Phoca vitulina, are too similar in appearance to be identified accurately from the air, so our results probably include a mix of these species where their ranges overlap. Article in Journal/Newspaper Bering Sea Kuskokwim Nunivak Nunivak Island Phoca vitulina Sea ice Alaska IODE-UNESCO: OceanDocs - E-Repository of Ocean Publications Bering Sea Norton Sound ENVELOPE(69.507,69.507,-49.202,-49.202) |
institution |
Open Polar |
collection |
IODE-UNESCO: OceanDocs - E-Repository of Ocean Publications |
op_collection_id |
ftoceandocs |
language |
English |
topic |
Biology Ecology Fisheries |
spellingShingle |
Biology Ecology Fisheries Rugh, David J. Shelden, Kim E. W. Withrow, David E. Spotted Seals, Phoca largha, in Alaska |
topic_facet |
Biology Ecology Fisheries |
description |
The worldwide literature on management of spotted seals, Phoca largha, was reviewed and updated, and aerial surveys weref lown in 1992 and 1993 to determine the species' distribution and abundance in U.S. waters. In April, spotted seals were found only in the Bering Sea ice front. In June, they were seen along deteriorating ice floes and fast ice in Norton Sound. Surveys along most of Alaska's western coast in August and September found over 2,500 spotted seals in Kuskokwim Bay and concentrations of 100-400 seals around Nunivak Island, Scammon Bay, Golovnin Bay/Norton Sound, Cape Espenberg/Kotzebue Sound, and Kasegaluk Lagoon. All of these sites have been used by spotted seals in the past. The sum of the highest counts, irrespective of year, was 3,570 seals (CV =0.06). This is not an abundance estimate for all spotted seals in the Bering Sea, because it does not account for animals in the water, and we did not survey the Asian coast and some islands. Also, spotted seals and harbor seals, Phoca vitulina, are too similar in appearance to be identified accurately from the air, so our results probably include a mix of these species where their ranges overlap. |
format |
Article in Journal/Newspaper |
author |
Rugh, David J. Shelden, Kim E. W. Withrow, David E. |
author_facet |
Rugh, David J. Shelden, Kim E. W. Withrow, David E. |
author_sort |
Rugh, David J. |
title |
Spotted Seals, Phoca largha, in Alaska |
title_short |
Spotted Seals, Phoca largha, in Alaska |
title_full |
Spotted Seals, Phoca largha, in Alaska |
title_fullStr |
Spotted Seals, Phoca largha, in Alaska |
title_full_unstemmed |
Spotted Seals, Phoca largha, in Alaska |
title_sort |
spotted seals, phoca largha, in alaska |
publishDate |
1997 |
url |
http://hdl.handle.net/1834/26448 |
long_lat |
ENVELOPE(69.507,69.507,-49.202,-49.202) |
geographic |
Bering Sea Norton Sound |
geographic_facet |
Bering Sea Norton Sound |
genre |
Bering Sea Kuskokwim Nunivak Nunivak Island Phoca vitulina Sea ice Alaska |
genre_facet |
Bering Sea Kuskokwim Nunivak Nunivak Island Phoca vitulina Sea ice Alaska |
op_source |
http://aquaticcommons.org/id/eprint/9823 403 2012-08-16 14:24:30 9823 United States National Marine Fisheries Service |
op_relation |
http://spo.nmfs.noaa.gov/mfr591/mfr5911.pdf 0090-1830 http://hdl.handle.net/1834/26448 |
_version_ |
1766377684869316608 |