Matskási István (szerk.): A Magyar Természettudományi Múzeum évkönyve 90. (Budapest 1998)

Dobolyi, K.: Phytosociological studies on the andesite rocky grasslands in Visegrád Mountains (Hungary)

Table 12. Distribution of the water figures on the sites (BORHIDI 1993) (expressed in percentage) Groups of relevés Water figures I II III IV V VI Total 1 6.2 22.0 13.2 5.9 21.0 3.6 11.2 2 36.1 38.7 28.0 25.7 24.7 19.6 30.6 3 45.3 26.9 35.2 57.4 36.0 56.8 43.5 4 2.9 2.6 16.5 6.3 9.3 14.8 7.0 5 7.0 8.1 7.1 4.4 9.1 5.2 6.

S 6 1.2 1.7 0.5 7 1.4 0.4 8-12 Table 13. Distribution of the reaction figures on the sites (BORHIDI 1993) (expressed in percentage) Groups of relevés Reaction figures 1 11 Ill IV V VI Total 1-3 4 2.7 3.2 7.7 3.9 3.7 4.1 5 1 1.0 9.3 29.7 16.8 20.5 13.6 14.7 6 15.0 21.7 7.1 5.9 6. S 14.4 11.9 7 17.8 28.6 18.1 25.9 18.9 29.6 22.4 8 51.8 30.9 28.0 41.3 49.8 42.4 44.9 9 1.7 6.4 9.3 5.9 0.4 3.0 According to the ecological indicator values and the phytosociological composition a significant difference is between dolomite and andésite rocky grassland vegetation (DOBOLYI 1997). The proportion of Asplenio-Festucion pallentis elements is higher, BromoFestucion pallentis is lower on andésite grassland than on dolomite one (Table 9). In consequence of the parent material composition, open dolomite grassland is more basiphilous than the andésite one (Table 13). Differences in the temperature and water figures also seem to be significant, but exact ecological comparison of the several types of grassland vegetation requires more investigations.