PMID: 11325385Apr 28, 2001Paper

Speeds of invasion in a model with strong or weak Allee effects

Mathematical Biosciences
M Wang, Mark Kot

Abstract

We study an invasion model based on a reaction-diffusion equation with an Allee effect. We use a special, piecewise-linear, population growth rate. This function allows us to obtain traveling wave solutions and to compute wave speeds for a full range of Allee effects, including weak Allee effects. Some investigators claim that linearization fails to give the correct speed of invasion if there is an Allee effect. We show that the minimum speed for a sufficiently weak Allee may, in fact, be the same as that derived by means of linearization.

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