A general theory of avian migratory connectivity
A general theory of avian migratory connectivity
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DOI：
10.1111/ele.13817
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发表时间：
2021-06-25
期刊：
影响因子：
8.8
通讯作者：
Ruegg, Kristen C.
中科院分区：
文献类型：
--
作者：
Somveille, Marius;Bay, Rachael A.;Ruegg, Kristen C.
鸟类表现出一系列引人注目的季节性迁徙。尽管有许多研究描述了迁徙行为，但推动物种繁殖和越冬种群每年重新分布的潜在力量，即迁徙联系，在很大程度上仍然未知。在这里，我们通过开发一个模拟个体在繁殖区和越冬区之间的最佳再分布的建模框架，来检验这样的假设，即鸟类以一种最小限度地减少能量消耗的方式迁徙，同时考虑到种内对能量获取的竞争。使用美洲的25个物种，我们发现该模型准确地预测了经验迁徙模式，从而基于第一生态学和能量原理为迁徙连通性提供了一般解释。我们的模型为探索迁徙的生态学和进化的其他过程提供了强有力的基础，也为预测迁徙如何影响当地跨季节适应以及环境变化如何影响迁徙物种的种群动态提供了一个框架。
Birds exhibit a remarkable array of seasonal migrations. Despite much research describing migratory behaviour, the underlying forces driving how a species' breeding and wintering populations redistribute each year, that is, migratory connectivity, remain largely unknown. Here, we test the hypothesis that birds migrate in a way that minimises energy expenditure while considering intraspecific competition for energy acquisition, by developing a modelling framework that simulates an optimal redistribution of individuals between breeding and wintering areas. Using 25 species across the Americas, we find that the model accurately predicts empirical migration patterns, and thus offers a general explanation for migratory connectivity based on first ecological and energetic principles. Our model provides a strong basis for exploring additional processes underlying the ecology and evolution of migration, but also a framework for predicting how migration impacts local adaptation across seasons and how environmental change may affect population dynamics in migratory species.