作者
Damaris Zurell, Ute Eggers, Michael Kaatz, Shay Rotics, Nir Sapir, Martin Wikelski, Ran Nathan, Florian Jeltsch
发表日期
2015/3
期刊
Oikos
卷号
124
期号
3
页码范围
319-330
出版商
Blackwell Publishing Ltd
简介
Density regulation influences population dynamics through its effects on demographic rates and consequently constitutes a key mechanism explaining the response of organisms to environmental changes. Yet, it is difficult to establish the exact form of density dependence from empirical data. Here, we developed an individual‐based model to explore how resource limitation and behavioural processes determine the spatial structure of white stork Ciconia ciconia populations and regulate reproductive rates. We found that the form of density dependence differed considerably between landscapes with the same overall resource availability and between home range selection strategies, highlighting the importance of fine‐scale resource distribution in interaction with behaviour. In accordance with theories of density dependence, breeding output generally decreased with density but this effect was highly variable and …
引用总数
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