Condition-dependent movement and dispersal in experimental metacommunities
Condition-dependent movement and dispersal in experimental metacommunities
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DOI：
10.1111/ele.12475
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发表时间：
2015-09-01
期刊：
影响因子：
8.8
通讯作者：
Altermatt, Florian
中科院分区：
文献类型：
--
作者：
Fronhofer, Emanuel A.;Klecka, Jan;Altermatt, Florian
扩散和潜在的运动行为是理解和预测集合种群和集合种群动态的关键重要性的过程。一般来说，扩散决策是条件依赖的，并依赖于广义上的信息，如同种的存在。然而，对包括种间相互作用的后趋性的研究通常忽略了条件依赖性。因此，目前还不清楚是否以及如何扩散的metacompatibility是条件依赖性的，以及是否来自单物种的情况下，可以扩大到（Meta）社区的规则。使用实验原生动物metacquities，我们展示了如何分散和运动依赖于种间相互作用的强度和调整。我们发现，预测的运动和分散在metacquitities需要的知识行为反应内和种间的相互作用的强度。因此，不考虑种间相互作用而直接从单种集合种群推断的集合种群动态可能是有缺陷的。我们的工作确定了条件依赖的意义，了解亚稳态动力学，稳定性和物种的共存和分布。
Dispersal and the underlying movement behaviour are processes of pivotal importance for understanding and predicting metapopulation and metacommunity dynamics. Generally, dispersal decisions are condition-dependent and rely on information in the broad sense, like the presence of conspecifics. However, studies on metacommunities that include interspecific interactions generally disregard condition-dependence. Therefore, it remains unclear whether and how dispersal in metacommunities is condition-dependent and whether rules derived from single-species contexts can be scaled up to (meta)communities. Using experimental protist metacommunities, we show how dispersal and movement depend on and are adjusted by the strength of interspecific interactions. We found that the predicting movement and dispersal in metacommunities requires knowledge on behavioural responses to intra- and interspecific interaction strengths. Consequently, metacommunity dynamics inferred directly from single-species metapopulations without taking interspecific interactions into account are likely flawed. Our work identifies the significance of condition-dependence for understanding metacommunity dynamics, stability and the coexistence and distribution of species.