Abstract:
Anthropogenic global warming in this century can act as a leading factor for large scale species extinctions
in the near future. Species in order to survive need to develop dispersal strategies depending upon their
environmental niche. Based on empirical evidence only a few previous studies have addressed how dispersal
can evolve with changing temperature. However, for the analytical tractability, there is a need to develop an
explicit model to ask how the temperature-dependent dispersal alters ecological dynamics. We investigate the
persistence of species in a spatial ecological model, where dispersal is considered as a function of temperature.
Spatial persistence is of major concern and dispersal is reasonably an important factor for extinction risk
in the context of promoting synchrony. Our study yields how the temperature in
uences species decision of
dispersal, resulting in either short-range or long-range dispersal. We examine synchronous or asynchronous
behavior of species under their thermal dependence of dispersal. Moreover, we also analyze the transients to
study the collective behavior of species away from their nal or asymptotic dynamics. One of the key ndings
is at the most unfavorable environmental conditions long-range dispersal works out as the driving force for
the persistence of species.
