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跨半球移民对气候振荡的行为反应

Katrina Siddiqi-Davies¹, Joe Wynn^1,2, Oliver Padget^1,3

¹Department of Biology, University of Oxford, Mansfield Road, Oxford OX1 3SZ, UK.

Proceedings. Biological sciences

|October 29, 2024

概括

在厄尔尼诺年期间,曼克斯剪切水调整迁徙目的地,减少食. 这些变化影响了随后的繁殖成功,显示了气候波动对候鸟的级联影响.

科学领域:

海洋生物学海洋生物学
气候科学气候科学
动物迁徙动物迁徙

背景情况:

海洋生态系统对像厄尔尼诺-南方振荡 (ENSO) 这样的大规模气候变化很敏感.
迁徙物种对长期气候波动的反应比季节性变化了解得更少.

研究的目的:

为了研究一个长寿的迁徙物种,曼克斯剪切水 (Puffinus puffinus) 如何应对周期性的气候变化.
分析了13年的生物数据集,以了解迁徙行为的变化.

主要方法:

收集和分析了13年的曼克斯切尔水族生物数据集.
在不同的ENSO阶段 (厄尔尼诺和拉尼娜) 追踪迁徙目的地和食行为.
评估繁殖成功率和与非繁殖季节条件相关的小供应率.

主要成果:

在厄尔尼诺年与拉尼娜年相比,曼克斯剪水鸟在厄尔尼诺年迁移到更北方 (较低) 的度.
鸟类在厄尔尼诺年少食,这与它们的度变化有关.
厄尔尼诺的几年导致在随后的繁殖季节减少了食时间和的供应率,独立于北大西洋的繁殖条件.

结论:

作为对ENSO的反应,曼克斯州的单个剪水鸟在迁徙目的地表现出灵活性.
尽管在非繁殖期进行了适应性调整,但迁徙动物可能会对随后的繁殖行为和成功产生连续的负面影响.
这凸显了气候变化对高度流动的海洋物种的复杂影响.

关键词:

厄尔尼诺南方振荡行为行为行为.生物的生长生物的生长气候气候气候气候气候气候气候气候气候移民移民迁移迁移海鸟是一种海鸟.

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