大型生态系统中种内合作相互作用的影响
Effects of intraspecific cooperative interactions in large ecosystems
摘要：
我们分析了Allee效应的作用，人口密度和平均个体适应度之间的正相关关系，由大量物种形成的生态群落。我们的研究是使用广义Lotka-Volterra模型与物种之间的随机相互作用。我们得到了相图，并分析了多重平衡相的性质。显着的差异出现相对于逻辑增长的情况下，从而揭示了在确定生态系统的总体行为的功能响应所发挥的主要作用。
英文摘要：
We analyze the role of the Allee effect, a positive correlation between population density and mean individual fitness, for ecological communities formed by a large number of species. Our study is performed using the generalized Lotka-Volterra model with random interactions between species. We obtain the phase diagram and analyze the nature of the multiple equilibria phase. Remarkable differences emerge with respect to the case of the logistic growth case, thus revealing the major role played by the functional response in determining aggregate behaviours of ecosystems.
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