Resightings of branded Steller sea lions at wintering haul‐out sites in Hokkaido, Japan 2003–2006
Resightings of branded Steller sea lions at wintering haul‐out sites in Hokkaido, Japan 2003–2006
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2003-2006 年日本北海道越冬拖运点重新观察品牌北海狮
DOI：
10.1111/j.1748-7692.2009.00367.x
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发表时间：
2009
影响因子：
2.3
通讯作者：
O. Yamamura
中科院分区：
文献类型：
--
作者：
Takeomi Isono;V. Burkanov;N. Ueda;Kaoru Hattori;O. Yamamura
星海狮（Eumetopias jubatus）广泛分布于从美国加州到日本北海道岛的北太平洋沿岸（艾伦1880，Loughlin et al. 1992）。在北海道岛海岸附近出现的SSL属于亚洲种群，包括千岛群岛、鄂霍次克海和堪察加半岛的种群（Baker等人，2005年）。亚洲种群从1960年代的约25 000只迅速减少到1990年代的13 000只。从那时起，它一直在小幅反弹（Burkanov和Loughlin 2005）。根据2004-2005年夏季在主要的产卵场和取出地点进行的直接计数，该种群的最新种群估计数约为17 000只（Burkanov和Loughlin，2005年）。SSLs必须在冬季增加体重，以实现哺乳期更高的能量需求（Winship等人，2001，Trites和
Steller sea lions (SSLs), Eumetopias jubatus, are widely distributed throughout the North Pacific rim from California, USA to Hokkaido Island, Japan (Allen 1880, Loughlin et al. 1992). SSLs occurring around the coast of Hokkaido Island belong to the Asian stock, which comprises populations in the Kuril Islands, the Sea of Okhotsk, and Kamchatka Peninsula (Baker et al. 2005). The Asian stock decreased rapidly from approximately 25,000 in the 1960s to 13,000 in the 1990s. It has been rebounding slightly since then (Burkanov and Loughlin 2005). The latest population estimate of the stock was approximately 17,000 based on direct counts at major rookeries and haul-out sites conducted during the summer of 2004–2005 (Burkanov and Loughlin 2005). SSLs must increase body mass during winter to enable the higher energetic demands of lactation (Winship et al. 2001, Trites and
基于航空和目击调查的北海道日本海沿岸冬季北海狮 Eumetopias jubatus 分布
DOI：
--
发表时间：
2006
期刊：
Fisheries Science 72(5)
影响因子：
--
作者：
H.Hoshino;Y.Sakurai et al.
通讯作者：
Y.Sakurai et al.