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Contribution of Alpha and Beta Diversity Across Land-Use Type to the Regional Diversity of Dung Beetles in Central Sulawesi


Journal: HAYATI Journal of Biosciences
ISSN 1978-3019

Volume: 20;
Issue: 2;
Start page: 72;
Date: 2013;
Original page

Keywords: dung beetles | diversity | spatial scales | additive partitioning | tropical forests

The importance of spatial scale has been acknowledged as one of determining factors of species diversity in local and regional diversity. The aim of this study was to evaluate contribution of alpha () and beta () diversity across land-use type to gamma () diversity at the margins of tropical forest in Central Sulawesi using dung beetles (Coleoptera: Scarabaeidae) as a focal group. Baited pitfall traps set in four land-use types ranging from natural forest through cacao agroforestry systems to open areas during two years of sampling (2009 and 2012). A total of 28 dung beetle species belonging to four genera were captured during the study period. The results showed that contribution of  diversity was higher than that of  diversity of dung beetles. Each land-use type contributed about 56.5 to 62.5% of the total species richness ( diversity). The similar pattern of biodiversity between each spatial scale and during the two sampling years emphasized the large contribution of each land-use type to maintaining a high portion of the regional species richness. It suggests the importance of managing other land-use types, such as secondary forest and agroforestry as well as protecting the remaining natural forests.

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