Ábrahám Levente (szerk.): Válogatott tanulmányok VII. - Natura Somogyiensis 22. (Kaposvár, 2012)

Winkler D. - Traser Gy. N.: Eco-faunistic study on the Collembola fauna in the Vasvár-Nagymákfa area (Őrség, Western Hungary)

48

Natura Somogyiensis

Table 2: Collembola community characteristics in the sampled habitats

S - species richness, A - average abundance (specimens/100 cm3), H' - Shannon’s diversity index, J - Pielou’s equitability index, CDI - community dominance index (%)

S

A

H'

J

CD1

beech forest

39

182.17

2.382

0.6501

47.16

oak-ash-elm forest

28

152.25

2.006

0.6021

57.80

mesotrophic wet meadow

19

65.78

1.874

0.6366

60.13

tall herb fen meadow

20

195.13

1.474

0.4922

80.01

Species richness was higher in the forest habitats compared with the meadows (Fig. 15a) due to the wider range of microhabitats usually offered in a woodland area. The highest number of species (39) was found in the beech forest, which can probably be explained also by the diversity of plant species including trees, since in a "pure" beech forest the species richness is usually lower (Traser 1980). In the meadow habitats the species number was about the half (19-20) while the lowland oak-ash-elm forest represents an intermediate habitat with the 28 species collected.

Shannon diversity showed a similar yet not the same trend as experienced in species number (Fig. 15b). Its numerical value was the highest in the beech forest and somewhat lower in the oak-ash-elm stand. For what concern the open habitats, despite of the lower species richness, diversity was higher in the mesotrophic wet meadow compared with the tall herb fen meadow, due to the more even distribution of specimens among species (Fig. 15c).

Rather unexpectedly, the habitat containing the most abundant Collembola community appeared to be the tall herb fen meadow (Fig. 15d). This interesting phenomenon

beech lul-aJi-cliii heed ntcu'in-pjiH «cl till herb Icn beech lote» hMhIí faM n*cv4i>>phic «el ball heiMcti

nte.uk m meadow mead-« nic-td •«

Kfecli bic-.l icilujicliu b*e«l irK*4ii>pliK wel uli beib leti hctvh (want lul-adi-ctni I. it «a mc^4nvph*c wet bill hrtb tat

meadow meadow Matin* meadow

Fig. 15 a-d. Species richness, Shannon diversity, equitability and abundance