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RANGE‐WIDE SURVEY AND ESTIMATION OF TOTAL NUMBER OF STELLER SEA LIONS IN 1989
Author(s) -
Loughlin Thomas R.,
Perlov Adolf S.,
Vladimirov Valery A.
Publication year - 1992
Publication title -
marine mammal science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.723
H-Index - 78
eISSN - 1748-7692
pISSN - 0824-0469
DOI - 10.1111/j.1748-7692.1992.tb00406.x
Subject(s) - sea lion , range (aeronautics) , juvenile , geography , fishery , population , biology , ecology , demography , materials science , sociology , composite material
Abstract: The first range‐wide survey of Steller (northern) sea lions ( Eumetopias jubatus ) was completed in 1989 with a total of 68,094 adult and juvenile (nonpup) Steller sea lions counted. This total count includes 10,000 in Russia (15% of the range‐wide count), 47,960 in Alaska (70%), 6,109 in British Columbia (9%), 2,261 in Oregon (3%), and 1,764 in California (3%). A range‐wide pup count was not obtained. We estimated the 1989 world population based on a calculation for total pups and obtained a range‐wide estimate of 116,000 total animals, or about 39–48% of the 240,000‐300,000 estimated 30 yr ago.