科研之友
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摘要
The butterfly assemblages of grassland habitats in the Transcarpathian part of the Bereg plain were studied with standard transect walk methods in 2012 and 2013, in 6 different sites (14 transects), in all sites with 4 and 5 repetitions per year. To sum up, we observed 63 butterfly species in more than 4800 individuals. 25% of these species is under protection in Hungary. Considering the faunal types, the widely distributed and generalist Euro-Siberian species predominate, but with significant presence of Holo-Mediterranean and southern Continental elements. The less disturbed habitats surrounded by natural forests have shown the highest species diversity (Shannon-Wiener). The assemblages were compared with multivariate methods (PCA, cluster, Bray-Curtis). Three main groups of habitats were separated and characterised by indicator species (IndVal). The positive effect of nature-like forest fringe and scrubby structures was demonstrated. According to our results the quality of habitats is more relevant for species diversity than size and/or isolation of habitats.
- 出版日期2015
