The Emergence of Range Limits in Advective Environments

Title: The Emergence of Range Limits in Advective Environments
Authors: Lam, King-Yeung
Lou, Yuan
Lutscher, Frithjof
Date: 2016
Abstract: In this paper, we study the asymptotic profile of the steady state of a reactiondiffusion-advection model in ecology proposed in [E. Pachepsky et al., Theoret. Popul. Biol., 67 (2005), pp. 61–73; D. Speirs and W. Gurney, Ecology, 82 (2001), pp. 1219–1237]. The model describes the population dynamics of a single species experiencing a unidirectional flow. We show the existence of one or more internal transition layers and determine their locations. Such locations can be understood as the upstream invasion limits of the species. It turns out that these invasion limits are connected to the upstream spreading speed of the species and is sometimes subject to the effect of migration from upstream source patches
DOI: 10.1137/15M1027887
CollectionMathématiques et statistiques // Mathematics and Statistics