Ábrahám Levente (szerk.): Válogatott tanulmányok V. - Natura Somogyiensis 17. (Kaposvár, 2010)

ERDŐS, L. & MORSCHHAUSER, T.: A déli gyöngyvesszős cserjés (Helleboro odori-Spiraeetum mediae) a Villányi-hegységben

ERDŐS L. & MORSCHHAUSER T.: HELLEBORO ODORI-SPIRAEETUM MEDIAE 11 Table 1. continued: 1 2 3 4 5 A-D K% Indifferent species Alliaria petiolata C 0,1 0,1 0,1 1 0,1 0,1-1 100 Cystopteris fragilis C 0,5 0,2 0,2 0,5 0,2 0,2-0,5 100 Dactylis glomerata agg. C 0,1 1 0,1 2 0,1 0,1-2 100 Fallopia convolvulus c 0,1 0,5 0,1 0,1 0,1 0,1-0,5 100 Galium aparine c 0,1 0,5 0,1 0,1 0,2 0,1-0,5 100 Stellaria media c 0,1 0,1 0,1 0,1 0,1 0,1 100 Thlaspi perfoliatum c 0,1 0,1 0,1 0,1 0,1 0,1 100 Valerianella locusta c 0,1 0,1 0,1 0,1 0,1 0,1 100 Ajuga genevensis c 0,1 0,1 0 0,1 0,1 0,1 80 Hypericum perforatum c 0,1 0,1 0,1 0 0,1 0,1 80 Brachypodium sylvaticum c 0 2 0,1 0 0,5 0,1-2 60 Veronica chamaedrys c 0,1 0,1 0,1 0 0 0,1 60 Bromus sterilis c 0 0,1 0 0 0,1 0,1 40 Euphorbia cyparissias c 0,1 0 0,1 0 0 0,1 40 Poa angustifolia c 0,1 0 0,1 0 0 0,1 40 Vicia hirsuta c 0 0,1 0 0,1 0 0,1 40 Eryngium campestre c 0 0 0,1 0 0 0,1 20 Taraxacum officinale c 0 0,1 0 0 0 0,1 20 Vicia angustifolia c 0 0,1 0 0 0 0,1 20 Other species Cerastium brachypetalum c 0,1 0,1 0,1 0,1 0,1 0,1 100 Geum urbanum c 0,5 6 0,5 8 3 0,5-8 100 Polypodium vulgare c 0,2 0,1 0,2 0,2 0,1 0,1-0,3 100 Myosotis stricta c 0,1 0,1 0,1 0 0,1 0,1 80 Rosa canina A 2 0 0 4 0,5 0,5-4 60 Rosa canina B 1 0,5 0 10 5 0,5-10 80 Arrhenatherum elatius c 0 2 0,1 0 0,1 0,1-2 60 Myosotis ramosissima c 0 0,1 0,1 0,1 0 0,1 60 Saxifraga bulbifera c 0 0 0,1 0 0 0,1 20 On the dendrogram (Fig. 1), relevés of the Szársomlyó Mt form a discrete cluster, because of the somewhat different species composition. The significant (p<0,01) differential species are listed in Table 2. The most important is Waldsteinia geoides, a character species of the alliance Spiraeion mediae, which is constant in the stands of the Mecsek Mts, but is completely absent from the stands of the Szársomlyó Mt (Waldsteinia geoides does not live in the Villány Mts). An other considerable difference is that ferns (Cystopteris fragilis, Asplenium javorkeanum, Asplenium trichomanes) are more common in the case of the Szársomlyó. The spectra of the social behaviour types (Fig. 2.) is nearly the same as on the Mecsek (cf. BORHIDI et al. 2003). Considering presence-absence data, generalist species are the most frequent (41.14%), while disturbance tolerants have the second greatest participation (23.42%). The proportion of weeds is 9.49%, while 6.33% of the species are specialists. Considering abundance data, proportion of competitor species is the greatest (78.66%). Generalists have a proportion of 10.44%, and disturbance tolerants 7.68%. Compared to the stands of the Mecsek Mts, there are no considerable differences in the spectra of the ecological indicator values. The spectra of the temperature values expand from T5 to T9, having a peak at T5 in the case of presence-absence data, and at T6 in the case of abundance data. The values of the water spectra vary from W1 to W7,