Allee Effects in Population Biology
DOI:
https://doi.org/10.11145/j.bmc.2014.08.012Abstract
The Allee effect is a phenomenon in biology characterized by a positive correlation between population density (size) and its per capita growth rate. This effect is simply a casual positive relationship between the number of individuals in a population and their overall individual fitness. The more individuals there are, up to a point, the better they fare. So as population size approaches a threshold, favorable influences stimulate its growth, and when it goes below it, unfavorable influences inhibit its growth. In 1975, Beddington et al modified a model by adopting the single species density-dependent Ricker model. We extend single-species models with Allee effects to two-species/two-dimensional population models and focus our attention in a Beddington model with Allee effects.
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