Population dynamics with global regulation: the conserved Fisher equation.
نویسندگان
چکیده
We introduce and study a conserved version of the Fisher equation. Within a population biology context, this model describes spatially extended populations in which the total number of individuals is fixed due to either biotic or environmental factors. We find a rich spectrum of dynamical phases including a pseudotraveling wave and, in the presence of the Allee effect, a phase transition from a locally constrained high density state to a low density fragmented state.
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ورودعنوان ژورنال:
- Physical review letters
دوره 92 22 شماره
صفحات -
تاریخ انتشار 2004