Zou Heng-Xing, Rudolf Volker H W
Program in Ecology and Evolutionary Biology, Department of BioSciences, Rice University, 6100 Main St, Houston, TX 77005, USA.
Program in Ecology and Evolutionary Biology, Department of BioSciences, Rice University, 6100 Main St, Houston, TX 77005, USA.
Trends Ecol Evol. 2023 Dec;38(12):1203-1216. doi: 10.1016/j.tree.2023.08.001. Epub 2023 Aug 24.
Priority effects play a key role in structuring natural communities, but considerable confusion remains about how they affect different ecological systems. Synthesizing previous studies, we show that this confusion arises because the mechanisms driving priority and the temporal scale at which they operate differ among studies, leading to divergent outcomes in species interactions and biodiversity patterns. We suggest grouping priority effects into two functional categories based on their mechanisms: frequency-dependent priority effects that arise from positive frequency dependence, and trait-dependent priority effects that arise from time-dependent changes in interacting traits. Through easy quantification of these categories from experiments, we can construct community models representing diverse biological mechanisms and interactions with priority effects, therefore better predicting their consequences across ecosystems.
优先效应在构建自然群落中起着关键作用，但对于它们如何影响不同的生态系统仍存在相当大的困惑。综合先前的研究，我们发现这种困惑的产生是因为驱动优先效应的机制以及它们起作用的时间尺度在不同研究中存在差异，从而导致物种相互作用和生物多样性模式产生不同的结果。我们建议根据其机制将优先效应分为两个功能类别：由正频率依赖性产生的频率依赖性优先效应，以及由相互作用性状随时间变化产生的性状依赖性优先效应。通过从实验中轻松量化这些类别，我们可以构建代表不同生物机制和具有优先效应的相互作用的群落模型，从而更好地预测它们在整个生态系统中的后果。
