Source: Adv. in Appl. Probab. Volume 42, Number 4
(2010), 1172-1186.
We propose a model for the presence/absence of a population in a collection of
habitat patches. This model assumes that colonisation and extinction of the
patches occur as distinct phases. Importantly, the local extinction
probabilities are allowed to vary between patches. This permits an
investigation of the effect of habitat degradation on the persistence of the
population. The limiting behaviour of the model is examined as the number of
habitat patches increases to ∞. This is done in the case where the
number of patches and the initial number of occupied patches increase at the
same rate, and for the case where the initial number of occupied patches
remains fixed.
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