Insights from the first global population estimate of Weddell seals in Antarctica.
Insights from the first global population estimate of Weddell seals in Antarctica.
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来自南极洲威德尔海豹首次全球种群估计的见解。
DOI：
10.1126/sciadv.abh3674
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发表时间：
2021-09-24
期刊：
影响因子：
13.6
通讯作者：
Rotella J
中科院分区：
文献类型：
--
作者：
LaRue M;Salas L;Nur N;Ainley D;Stammerjohn S;Pennycook J;Dozier M;Saints J;Stamatiou K;Barrington L;Rotella J
南极海岸线周围的威德尔海豹种群因地区而异，其栖息地与企鹅的邻近有关。威德尔海豹是世界上研究最深入的海洋哺乳动物之一，这要归功于对其分布范围最南端进行了数十年人口统计的努力。尽管它们出现在南极海岸线周围，但我们对更大规模的分布模式、种群规模或结构知之甚少。我们结合 2011 年的高分辨率卫星图像、众包和栖息地建模，首次报告了该物种的全球种群数量以及影响其分布的环境因素。我们估计了约 202,000 只（95% 置信区间：85,345 至 523,140）只亚成年和成年雌性海豹，其中近似海洋深度和固定冰变量作为解释空间流行率的因素。距企鹅栖息地的距离与海豹的存在有关，但只有帝企鹅的种群规模存在很强的负相关关系。相对于之前的估计，估计的种群规模较小，而且海豹与营养竞争者的关系表明，监测南大洋生态系统需要采用群落生态学方法。
Weddell seal populations around the Antarctic coastline vary regionally, and habitat is associated with proximity to penguins. The Weddell seal is one of the best-studied marine mammals in the world, owing to a multidecadal demographic effort in the southernmost part of its range. Despite their occurrence around the Antarctic coastline, we know little about larger scale patterns in distribution, population size, or structure. We combined high-resolution satellite imagery from 2011, crowd-sourcing, and habitat modeling to report the first global population estimate for the species and environmental factors that influence its distribution. We estimated ~202,000 (95% confidence interval: 85,345 to 523,140) sub-adult and adult female seals, with proximate ocean depth and fast-ice variables as factors explaining spatial prevalence. Distances to penguin colonies were associated with seal presence, but only emperor penguin population size had a strong negative relationship. The small, estimated population size relative to previous estimates and the seals’ nexus with trophic competitors indicates that a community ecology approach is required in efforts to monitor the Southern Ocean ecosystem.
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DOI：
10.1668/0003-1569(2001)041
发表时间：
2001-04-01
期刊：
AMERICAN ZOOLOGIST
影响因子：
--
作者：
Kramer, DL;McLaughlin, RL
通讯作者：
McLaughlin, RL
影响因子：
0.8
作者：
Ainley, David G.
通讯作者：
Ainley, David G.
影响因子：
6.1
作者：
Ainley, David;Russell, Joellen;Kooyman, Gerald L.
通讯作者：
Kooyman, Gerald L.
影响因子：
1.2
作者：
Ainley, David G.;Ballard, Grant
通讯作者：
Ballard, Grant
DOI：
10.1016/j.dsr2.2010.10.037
发表时间：
2011-05-01
影响因子：
3
作者：
Bengtson, John L.;Laake, Jeff L.;Stewart, Brent S.
通讯作者：
Stewart, Brent S.