The Weddell seals of Larsen Harbour, South Georgia: a unique but apparently declining colony
The Weddell seals of Larsen Harbour, South Georgia: a unique but apparently declining colony
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南乔治亚岛拉森港的威德尔海豹：一个独特但明显衰落的殖民地
DOI：
10.1017/s0032247414000953
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发表时间：
2015
期刊：
影响因子：
0.8
通讯作者：
R. Burton
中科院分区：
文献类型：
--
作者：
R. Burton
南乔治亚州拉森港的威德尔海豹数量不多，它们与其他海豹种群隔绝，而且几乎所有的幼崽都是在陆地上出生的，而不是在海冰上。本文总结了在繁殖季节对拉森港海豹的观察结果。在游轮开始到访之前，这种情况并不常见。通常一年只有一次观察，准确估计幼崽的产量是不可能的，但在过去的三十年里，数量似乎有所减少。
ABSTRACT The small population of Weddell seals at Larsen Harbour, South Georgia, is isolated from the rest of the species and is unique because nearly all pups are born on land rather than on sea-ice. Observations of seals in Larsen Harbour during the breeding season are summarised. These have been infrequent until cruise ships started to visit. With often only a single observation in a year, accurate estimates of pup production are impossible but it appears that the population has decreased over the last three decades.