Leveraging multidimensional heterogeneity in resource selection to define movement tactics of animals
Leveraging multidimensional heterogeneity in resource selection to define movement tactics of animals
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DOI：
10.1111/ele.13327
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发表时间：
2019-09-01
期刊：
影响因子：
8.8
通讯作者：
Wittemyer, George
中科院分区：
文献类型：
--
作者：
Bastille-Rousseau, Guillaume;Wittemyer, George
对运动相关行为的复杂性、多样性和驱动因素的兴趣日益增加，有望对生态学的基本组成部分产生新的见解。解决空间外显行为的多维性对于研究策略及其与生态位构建的关系仍然是一个挑战，但高分辨率的运动数据提供了对空间外显行为多样性的前所未有的理解。我们引入了一个框架，用于研究运动定义的资源选择中的个体差异，该框架整合了行为和生态位概念。我们将其应用于115头非洲象（Loxodonta africana）的长期跟踪数据，说明了如何根据个体及其生态环境之间的差异来定义行为超容量，并应用于探索种群异质性。虽然规范的移动行为经常被用来描述人口行为，但我们证明了利用行为的异质性来更深入地了解人口结构和驱动空间使用策略的机制的价值。
Increasing interest in the complexity, variation and drivers of movement-related behaviours promise new insight into fundamental components of ecology. Resolving the multidimensionality of spatially explicit behaviour remains a challenge for investigating tactics and their relation to niche construction, but high-resolution movement data are providing unprecedented understanding of the diversity of spatially explicit behaviours. We introduce a framework for investigating individual variation in movement-defined resource selection that integrates the behavioural and ecological niche concepts. We apply it to long-term tracking data of 115 African elephants (Loxodonta africana), illustrating how a behavioural hypervolume can be defined based on differences between individuals and their ecological settings, and applied to explore population heterogeneity. While normative movement behaviour is frequently used to characterise population behaviour, we demonstrate the value of leveraging heterogeneity in the behaviour to gain greater insight into population structure and the mechanisms driving space-use tactics.