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1 August 2009 Distribution of Carabid Beetles (Coleoptera: Carabidae) Across Ecotones Between Regenerating and Mature Forests in Southwestern China
Xiao-Dong Yu, Tian-Hong Luo, Hong-Zhang Zhou
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Edge effects resulting from logging on the distribution of carabid beetles (Coleoptera: Carabidae) were studied across ecotones between regenerating and mature forests established after harvesting of old-growth forests 20 yr prior to this study in southwestern China. Using pitfall traps, beetles were collected along five ecotone transects using nine samples with a distance interval of 25 m each. Although no significant differences were found in species richness and abundance of carabids among all three habitats, i.e., mature forest, young regenerating stand, and edge habitat, rarefaction estimates of species richness indicated that traps in young regenerating stands accumulated species faster than those on mature forest interiors and forest edges. Carabid species composition of the forest edges was more similar to those of the mature forest interiors than to those of the young regenerating stands. Variability in species composition was significantly reduced in young stands, suggesting that the carabid community from young stands is more homogeneous than the one from mature forests. Although most species occurred in all habitats, some species were significantly more abundant in mature forests and/or edges than in young stands. Results indicated that edge effects on forest carabids may persist for at least 20 yr after disturbance.

© 2009 Entomological Society of America
Xiao-Dong Yu, Tian-Hong Luo, and Hong-Zhang Zhou "Distribution of Carabid Beetles (Coleoptera: Carabidae) Across Ecotones Between Regenerating and Mature Forests in Southwestern China," Environmental Entomology 38(4), 1053-1060, (1 August 2009).
Received: 26 March 2009; Accepted: 1 June 2009; Published: 1 August 2009

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