Metapopulation dynamics in a regional population of the blue-winged grasshopper (Oedipoda caerulescens; Linnaeus, 1758)
作者： Monika Appelt , Hans J. Poethke
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摘要: For two consecutive years we registered the presence (or absence) of blue winged grasshoppers (Oedipoda caerulescens; Linnaeus, 1758) on 312 habitat patches differing size in a region more than 3000 ha. The data show that patch is dependent as well isolation. We used an ecological incidence model to describe metapopulation dynamics regional population and derived parameters for this from presence-absence observations Oedipoda dispersion. analysis shows local extinction grasshopper populations influenced by strong fluctuations environmental conditions number small our recolonization important O. caerulescens. Colonization probability, using model, good agreement with estimates genetical analysis.
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