Evolution of natal dispersal in spatially heterogenous environments
نویسندگان
چکیده
منابع مشابه
Evolution of natal dispersal in spatially heterogenous environments.
Understanding the evolution of dispersal is an important issue in evolutionary ecology. For continuous time models in which individuals disperse throughout their lifetime, it has been shown that a balanced dispersal strategy, which results in an ideal free distribution, is evolutionary stable in spatially varying but temporally constant environments. Many species, however, primarily disperse pr...
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We consider the evolution of dispersal in an environment that varies spatially but that is constant in time. We allow an age structure with dispersal possible in all life-stages. We suppose that demes are large enough that kin effects can be ignored. It has previously been shown that costfree dispersal can persist over evolutionary time. However, several studies have shown that costly dispersal...
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Spatiotemporal variability of the environment is bound to affect the evolution of dispersal, and yet model predictions strongly differ on this particular effect. Recent studies on the evolution of local adaptation have shown that the life cycle chosen to model the selective effects of spatiotemporal variability of the environment is a critical factor determining evolutionary outcomes. Here, we ...
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We study a two-species competition model in a closed advective environment, where individuals are exposed to unidirectional flow (advection) but no individuals are lost through the boundary. The two species have the same growth and advection rates but different random dispersal rates. The linear stability analysis of the semi-trivial steady state suggests that, in contrast to the case without a...
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Organisms modulate their fitness in heterogeneous environments by dispersing. Prior work shows that there is selection against 'unconditional' dispersal in spatially heterogeneous environments. 'Unconditional' means individuals disperse at a rate independent of their location. We prove that if within-patch fitness varies spatially and between two values temporally, then there is selection for u...
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ژورنال
عنوان ژورنال: Mathematical Biosciences
سال: 2017
ISSN: 0025-5564
DOI: 10.1016/j.mbs.2016.11.003