RANGE‐WIDE SURVEY AND ESTIMATION OF TOTAL NUMBER OF STELLER SEA LIONS IN 1989
RANGE‐WIDE SURVEY AND ESTIMATION OF TOTAL NUMBER OF STELLER SEA LIONS IN 1989
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1989年北头海狮总数的大范围调查与估算
DOI:
10.1111/j.1748-7692.1992.tb00406.x
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发表时间:
1992
影响因子:
2.3
通讯作者:
V. Vladimirov
中科院分区:
文献类型:
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作者:
T. Loughlin;A. S. Perlov;V. Vladimirov
: 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.
DOI:
--
发表时间:
2005
期刊:
影响因子:
--
作者:
Hidehisa;Kurotaki
通讯作者:
Kurotaki