Detecting environmental impacts on metapopulations of mound spring invertebrates: assessing an incidence function model.
作者： Andrew J Tyre , Hugh P Possingham , Darren P Niejalke
DOI: 10.1016/S0160-4120(01)00091-5
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摘要: We use a stochastic patch occupancy model of invertebrates in the Mound Springs ecosystem South Australia to assess ability incidence function models detect environmental impacts on metapopulations. assume that probability colonisation decreases with increasing isolation and extinction is constant across spring vents. run quasi-equilibrium, then impose an impact by local probability. sample output at various times pre- postimpact, examine detecting significant change population parameters. The approach turns out have little power metapopulations small numbers patches.
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