消光(光学矿物学)
生态学
印章(徽章)
人口
生物集群灭绝
生物
环境伦理学
地理
历史
考古
人口学
社会学
古生物学
生物扩散
哲学
作者
Burney J. Le Boeuf,Richard A. Laws
出处
期刊:Choice Reviews Online
[American Library Association]
日期:1995-02-01
卷期号:32 (06): 32-3308
被引量:49
标识
DOI:10.5860/choice.32-3308
摘要
The largest of all seals, elephant seals rank among the most impressive of marine mammals. They are renowned for their spectacular recovery from near extinction at the end of the 19th century when seal hunters nearly eliminated the entire northern species. No other vertebrate has come so close to extinction and made such a complete recovery. The physiological extremes that elephant seals can tolerate are also remarkable. This study of the elephant seal brings together an international group of scientists who describe and debate recent research, including the history and status of various populations, their life-history tactics, and other findings obtained with the help of modern microcomputer diving instruments attached to free-ranging seals. It also aims to illuminate current debates about the species' extinction and possible means of prevention.
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