Subsidized Island Biogeography Hypothesis: another new twist on an old theory
We present a new hypothesis for predicting and describing patterns of species diversity on small islands and habitat fragments. We have modified the traditional island biogeography equilibrium theory to incorporate the influence of spatial subsidies from the surrounding matrix, which vary among islands and habitat fragments, on species diversities. The modification indicates three possible directions for the effects of spatial subsidies on diversity, which depend on where the focal community falls on the hypothesized unimodal curve of the productivity–diversity relationship. The idea is novel because no recent syntheses of productivity–diversity–area relationships examine the role of allochthonous resources on recipient communities’ diversity patterns.
diversity, island biogeography, productivity, spatial subsidies, species richness
Anderson, W. B., and D. A. Wait. "Subsidized island biogeography hypothesis: another new twist on an old theory." Ecology Letters 4, no. 4 (2001): 289-291.