Amphibians in a human-dominated landscape: the community structure is related to habitat features and isolation

摘要: We studied amphibian populations in a human-dominated landscape, Northern Italy, to evaluate the effects of patch quality and isolation on each species distribution community structure. used logistic linear multiple regression relate presence during breeding season 84 wetlands wetland features isolation. Jackknife procedure was predictive capability models. Again, we tested response habitat related richest communities. Amphibian depends strongly isolation: communities live fish-free, sunny near occupied wetlands. The negative do not seem be biased by spatial autocorrelation features. system shows strong nestedness: persistence contemporary adaptability mobility. commonest species, pool frog (Rana synklepton esculenta) Italian tree (Hyla intermedia), are able move through matrix using canals hedgerows, can maintain metapopulations across landscape; rarest (newts toads) more sensitive alteration, they affected effects. If human exploitation landscape continues, only few mobile opportunistic, will persist this landscape.