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Journal Article

Journal Article

Abundance and distribution of the eastern North Pacific Steller sea lion (Eumetopias jubatus) population  [2007]

Pitcher, Kenneth W.; Olesiuk, Peter F.; Brown, Robin F.; Lowry, Mark S.; et al.

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The eastern Steller sea lion (Eumetopias jubatus) populationcomprises animals that breed along the west coast of North America between California and southeastern Alaska. There are currently 13 major rookeries (>50 pups): five insoutheastern Alaska, three in British Columbia, two in Oregon, and three in California. Overall abundance hasincreased at an average annual rate of 3.1% since the 1970s. These increases can largely be attributed to population recovery from predator-control kills and commercial harvests, and abundance is now probably as high as it has been in the last century. The number of rookeries has remained fairly constant (n=11 to 13) over thepast 80 years, but there has been a northward shift in distribution of both rookeries and numbers of animals.Based on the number of pups counted in a population-wide survey in 2002, total pup production was estimated to be about 11,000 (82% in southeastern Alaska and British Columbia), representing a total population size as approximately 46,000−58,000 animal

Bibliographic information

Type:
Journal Article
In AGRIS since:
2013
All titles:
"Abundance and distribution of the eastern North Pacific Steller sea lion (Eumetopias jubatus) population"@eng
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Bibliographic information

Type:
Journal Article
In AGRIS since:
2013
All titles:
"Abundance and distribution of the eastern North Pacific Steller sea lion (Eumetopias jubatus) population"@eng