Aggregate Statistical Measuresand Metapopulation Dynamics.
Jordi Bascompte, 2001
Journal of theoretical Biology, 209: 373-379.
cheap hotel in EstorilABSTRACT: There are twomain types of metapopulation models. Spatially implicit models are analyticallytractable but neglect spatial heterogeneities. Spatially explicit modelsare more realistic but too complex. In this paper I build a bridge betweenboth approximations. I derive a new metapopulation model using a well-knowtechnique in population genetics. Spatial heterogeneities are capturedby an aggregate statistical measure of spatial correlation. When this correlationis zero, i.e., space is homogeneous, the model becomes the well-known Levins'model. As spatial correlation increases, equilibrium patch occupancy decreasesfrom what would be expected under the spatially homogeneous assumption.I proceed by testing how well spatial complexities from a spatially explicitsimulation can be encapsulated by such an aggregate statistical measure.
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