Competition promotes the persistence of populations in ecosystems.
Competition promotes the persistence of populations in ecosystems.
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DOI：
10.1038/srep30477
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发表时间：
2016-07-27
影响因子：
4.6
通讯作者：
Liu T
中科院分区：
文献类型：
--
作者：
Wang T;Duan J;Liu T
竞争是生态系统中最常见的竞争形式之一，在种群动态中起着重要作用。然而，在考虑空间效应的情况下，竞争对种群持久性的影响尚不清楚。本文研究了一个具有竞争和空间扩散的捕食者-食饵模型。基于种群的模式形成和时间序列，我们发现竞争诱导了种群的持续性，这否定了竞争排斥原理。此外，我们还证明了这些效应的稳健性。我们的研究结果还表明，空间可能导致生态系统中新现象的出现。
Competition is one of the most common form in ecological systems, which plays important roles in population dynamics. However, the influences of competition on persistence of populations remain unclear when space effect is included. In this paper, we investigated a predator-prey model with competition and spatial diffusion. Based on pattern formations and time series of populations, we found that competitions induce the persistence of populations, which denies competitive exclusion principle. Moreover, we testify the robustness of these effects. Our results also suggest that space may lead to the emergence of new phenomenon in ecosystems.