Decline of recent seabirds inferred from a composite 1000-year record of population dynamics.

Decline of recent seabirds inferred from a composite 1000-year record of population dynamics.
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从 1000 年人口动态综合记录推断近期海鸟的减少

DOI:
10.1038/srep35191
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发表时间:
2016-10-17
期刊:
影响因子:
4.6
通讯作者:
Chen L
Chen L
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Xu L;Liu X;Wu L;Sun L;Zhao J;Chen L

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根据中国南海西沙群岛的3个造鸟沉积剖面和其中的海鸟亚化石,利用反射光谱重建了近1000年来海鸟的相对种群数量。在这里,我们呈现了南中国海这些岛屿上海鸟的明显增加和随后的减少。小冰期(LIA,公元1400年-1850年)海鸟种群数量达到顶峰,这意味着小冰期凉爽的气候似乎更有利于南中国海西沙群岛的海鸟。气候变化在一定程度上解释了过去150年来海鸟数量最近减少的原因,但西沙群岛大部分地区海鸟数量的显著下降和几乎完全消失可能是人类干扰造成的。我们的研究揭示了近年来人类活动对海鸟种群的影响越来越大。
Based on three ornithogenic sediment profiles and seabird subfossils therein from the Xisha Islands, South China Sea, the relative population size of seabirds over the past 1000 years was reconstructed using reflectance spectrum. Here we present an apparent increase and subsequent decline of seabirds on these islands in the South China Sea. Seabird populations peaked during the Little Ice Age (LIA, 1400–1850 AD), implying that the cool climate during the LIA appears to have been more favorable to seabirds on the Xisha Islands in the South China Sea. Climate change partly explains the recent decrease in seabird populations over the past 150 years, but the significant decline and almost complete disappearance thereof on most of the Xisha Islands is probably attributable to human disturbance. Our study reveals the increasing impact of anthropogenic activities on seabird population in recent times.
西福尔山加德纳岛过去 8500 年的企鹅种群动态
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