Matskási István (szerk.): A Magyar Természettudományi Múzeum évkönyve 83. (Budapest 1991)

Dobolyi, K., Kováts, D. , Szerdahelyi, T. ; Szollát, Gy.: Vegetation studies on the rocky grasslands of Odvas Hill (Budaörs, Hungary)

Fig. 5. Distribution of the phytogeographical spectrum on the groups Fig. 6. Distribution of the life-form spectrum It is characteristic for the life-form spectrum (Fig. 6) that the high quantities of the chamaephyton and nanophanerophyton elements, or of the therophyton and chamaephyton elements appear to the detriment of chamaephyton elements group II. There are strong differences among the sample groups from the point of view of ecological parameters. According to the distribution of the temperature requirement (Fig. 7) it can be seen that higher quantities of termophilous species (T4) of sample groups I and IV conjoin the southern side sample plots. Regarding soil requirements (Fig. 7) it is worthy to mention that a higher percentage of indifferent (R0) species is present in sample group II. Considering the distribution of water requirement (Fig. 8) in group II there are less number of Fl elements and more F2 elements illustrating the less extreme character of the habitat. In case of the nitrogen requirement some diffe-