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

The number of species changed parallel between the 'forest habitat' ar.d the 'steppe habitat' from April till October and this correlation is proved to be significant ITable 4) The abundances correlate significantly too, but this significance is not so high because of the relevant fluctuation (Table 4>. Table 4. Correlation of species richness and abundance between the three successional stages. (N=14

; Pearson's correlation coefficient/one-tailed signi ficance

) Open dolomitic grassland Dolomitic steppe meadow Sessile-turkey oak forest Species richness Open dolomitic grassland Dolonûtic Sessilesteppe I turkey me idov oak fcrc J.^762 0.170 Open dolomitic d irassland Abundance Dolomitic steppe meadow . j 7 y J 090 0.8425 0.000 -0.0793 0 . 394 0.2759 0.170 Sessileturkey oak forest 0.6344 0.007 There is no significant correlation between the diversity values in any of the cases (Table 5). The correlation between the equitability values of the beetles of the 'forest habitat' and the 'open habitat' is positive and siqni1ficant. Between the 'forest habitat' and the 'steppe habitat' the cörri lation is negative and significant (Table 5). Table 5. Correlation of diversity and equitabilitv values between the threi successional stages. ( N - 14 : Pearson' s ce r re J. r. ccefi icient ' ne-tailed s igr i ' 'unco ) * '. ' Diversity - • • E quitabil i. ; ; .. i Open dolomitic grassland Dolomitic steppe meadow Sessilet arkev oak forest Open oolomitic grassland Dolomitic steppe rreadov; Sessileturkey oak forest Open dolomitic grassland 0. 2350 0. 209 -0.3135 0.138 Dolomitic steppe meadow 0.1219 0.339 -0.1843 0. 264 _ _ Sessile-turkey oak forest 0. 5 9 5 1 0.O1 2 -0. 52 81 0.026 _ According to the results the cluster ma . /s.-.-- I Tig . 2 I ... can separate the three beetle commun i t r-.- into two main area: -,, ai: • lv t<~ • • ,. forestand to-the grassland-dwelling »ct. ties.