Evolution of mixed dispersal in periodic environments
Chiu-Yen Kao - Department of Mathematics, The Ohio State University, Columbus, OH 43210, United States (email)
Abstract: Random dispersal describes the movement of organisms between adjacent spatial locations. However, the movement of some organisms such as seeds of plants can occur between non-adjacent spatial locations and is thus non-local. We propose to study a mixed dispersal strategy, which is a combination of random dispersal and non-local dispersal. More specifically, we assume that a fraction of individuals in the population adopt random dispersal, while the remaining fraction assumes non-local dispersal. We investigate how such mixed dispersal affects the invasion of a single species and also how mixed dispersal strategy will evolve in spatially heterogeneous but temporally constant environment.
Keywords: Non-local dispersal, random dispersal, competition, reaction-diffusion, integral kernel.
Received: April 2011; Revised: May 2011; Published: May 2012.
2011 Impact Factor.921