Species clustering in competitive Lotka-Volterra models

Abstract

We study the properties of Lotka-Volterra competitive models in which the intensity of the interaction among species depends on their position along an abstract niche space through a competition kernel. We show analytically and numerically that the properties of these models change dramatically when the Fourier transform of this kernel is not positive definite, due to a pattern forming instability. We estimate properties of the species distributions, such as the steady number of species and their spacings, for different types of kernels.

4 pages, 3 figures

References in corpus (2)

• Neutral Theory and Relative Species Abundance in Ecology
• Neutral Evolution as Diffusion in phenotype space: reproduction with mutation but without selection

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