Influences of Habitat Fragmentation on Bird Species Distributions and Regional Population Sizes

摘要: A simple modelling approach was used to investigate the influence of habitat fragmentation on distributions and regional population sizes passerines breeding in 145 small woods an arable landscape. Observed three consecutive years were compared with those predicted by random selection pairs (based a Poisson distribution), simulation model based area available estimates individual species minimum requirements territory sizes. None studied distributed randomly; some according woodland available, whereas others preferred either or large woods. However, influenced their When small, observed could be using algorithms alone, but as numbers increased, parameters required. An absence detectable territorial interaction suggested that space for more concerned had been our Of 14 investigated, models only two consistently required use parameters, indicating probably have accommodated most species. Thus may reduce than expected from loss extent patches suitable unused, occupied at low density.