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Effects of patch size and forest type on ground beetles in Korea
- 언어ENG
- URLhttps://db.koreascholar.com/Article/Detail/302374
To identify the key effects of human disturbance on terrestrial ecosystems is a major issue in the contemporary conservation. We compared the community structure of ground beetles among different forest patch sizes according to the different forest types. In addition, we examined how different functional groups and species responded to patch size, and habitat and geographical variables. We sampled ground beetles in 9 continuous forests and 18 patches including 6 deciduous, 6 Korean pine, and 6 Japanese red pine. Ground beetles were collected using 5 pitfall traps in each site, and replaced every month during May to October in 2013. Individual-based rarefaction curves indicated that higher species richness was found in continuous forests than forest patches irrespective of the forest types. Positive relationships were found between forest patch size and species richness of each functional group associated with forest habitat. When all patch size, geographical, and habitat variables were considered simultaneously for multiple regressions, patch size, longitude, latitude, elevation, organic matter, and litter depth were generally selected as significant predictor variables of the abundance and species richness of forest specialists, brachypterous, dimorphic, and large-bodied species, although longitude was only selected as a best predictor for 27 study sites in MRT. In conclusion, decreasing patch size is a major factor to the loss of biodiversity for ground beetles. To reduce biodiversity loss caused by habitat fragmentation, therefore, protecting as large as old-growth forests and improving habitat quality are critical for the biodiversity conservation and enhancement.
