Character displacement or priority effects: immigration timing can affect community assembly with rapid evolution
Character displacement or priority effects: immigration timing can affect community assembly with rapid evolution
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DOI：
10.1098/rspb.2024.2145
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发表时间：
2024-11-20
影响因子：
4.7
通讯作者：
Yamamichi，Masato
中科院分区：
文献类型：
--
作者：
Morita，Keiichi;Yamamichi，Masato
了解生物群落如何在快速进化的情况下聚集正在成为生态学的一个重要课题。以往的研究表明，群落聚集可以受到两种类型的生态进化动力学的影响：进化介导的优先效应（EPE）和生态特征置换（ECD）。在EPE中，早到物种通过本地适应（即社区垄断）防止晚到物种的殖民化，而ECD通过生态位划分促进物种共存。研究人员倾向于分别讨论这两个过程，但根据不同的条件，这两个过程应该可以在同一系统中运行。在这里，我们开发了一个理论框架，通过使用一个简单的两个物种的竞争模型与生态进化反馈集成的两个过程。我们发现，当一个早期到达的物种进化时，早期到达和晚期到达物种之间的移民时间差异可能是一个关键参数。当差异很小时，ECD发生，因为早期到达的物种的当地适应不足，允许晚期到达的物种定居。然而，当差异很大时，EPE发生，因为生态位抢占当地适应的早期到达的物种防止殖民化的晚到的物种。进一步的理论和实证研究对于更好地理解ECD和EPE的生态进化群落组装非常重要。
Understanding how biological communities assemble in the presence of rapid evolution is becoming an important topic in ecology. Previous studies demonstrated that community assembly can be affected by two types of eco-evolutionary dynamics: evolution-mediated priority effect (EPE) and ecological character displacement (ECD). In EPE, early-arriving species prevent colonization of late-arriving species via local adaptation (i.e. community monopolization), whereas ECD promotes species coexistence by niche partitioning. Researchers tended to discuss the two processes separately, but it should be possible for those processes to operate in the same system depending on various conditions. Here, we developed a theoretical framework that integrates the two processes by using a simple two-species competition model with eco-evolutionary feedback. We revealed that, when an early-arriving species evolves, the difference in immigration timing between the early-arriving and a late-arriving species can be a key parameter. When the difference is small, ECD occurs because insufficient local adaptation of the early-arriving species allows colonization of the late-arriving species. When the difference is large, however, EPE occurs because niche pre-emption by local adaptation of the early-arriving species prevents colonization of the late-arriving species. Further theoretical and empirical studies will be important to better understand eco-evolutionary community assembly with ECD and EPE.