Super-linear spreading in local bistable cane toads equations - Archive ouverte HAL
Pré-Publication, Document De Travail Année : 2016

Super-linear spreading in local bistable cane toads equations

Résumé

In this paper, we study the influence of an Allee effect on the spreading rate in a local reaction-diffusion-mutation equation modelling the invasion of cane toads in Australia. We are, in particular, concerned with the case when the diffusivity can take unbounded values. We show that the acceleration feature that arises in this model with a Fisher-KPP, or monostable, non-linearity still occurs when this non-linearity is instead bistable, despite the fact that this kills the small populations. This is in stark contrast to the work of Alfaro, Gui-Huan, and Mellet-Roquejoffre-Sire in related models, where the change to a bistable non-linearity prevents acceleration.
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Dates et versions

hal-01293988 , version 1 (25-03-2016)

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Emeric Bouin, Christopher Henderson. Super-linear spreading in local bistable cane toads equations. 2016. ⟨hal-01293988⟩
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