S. Mahunka szerk.: Folia Entomologica Hungarica 51. (Budapest, 1990)

s 50 40 30 20 10 0 S 50 40 30 20 10 0 og,n I og 2

n Fig. 1. Species-abundance distribution of beetles in three stages of successional sere. A= Open dolomitic grassland? B= Dolomitic steppe meadow; C= Sessile-turkey oak forest. (S is the number of species, n is the number of individuals per species )