Composition and distribution of ground-dwelling beetles among oak fragments and surrounding pine plantations in a temperate forest of North China.

摘要: In this study, we compared ground-dwelling beetle assemblages (Coleoptera) from a range of different oak fragments and surrounding conifer plantations to evaluate effects forest size matrix habitat in temperate north China. During 2000, beetles were sampled via pitfall traps within two large (ca. 2.0-4.0 ha), small 0.2-0.4 ha) matrices dominated by pine (>4 sites aspects. Overall, no significantly negative patch the detected total species number abundance beetles. However, with patches or plantations, more associated an affinity for at least one Multivariate regression trees showed that type better determined assemblage structure than aspect, indicating strong impact matrix. Linear mixed models indicated richness all families responses selected environmental variables. Our results suggest disturbed are poorer specialists, which usually abundant decrease disappear habitats. Thus, it is necessary preserve minimum create conditions characteristic interior, rather difficult task increasing connectivity.