Ábrahám Levente (szerk.): Válogatott tanulmányok VI. - Natura Somogyiensis 19. (Kaposvár, 2010)
ERDŐS L., BÁTORI Z., MORSCHHAUSER T., DÉNES A. & KÖRMÖCZI L.: Transitional plant communities of the Villány Mts
ERDŐS ET AL.: TRANSITIONAL PLANT COMMUNITIES OF THE VILLÁNY MTS 37 Results The identified communities along the transect are shown in relation to the topographical circumstances in Figure 1. The northern end of the transect reached the Illyrian oak-hornbeam forest Asperulo taurinae-Carpinetum. (In fact, this community covers extensive areas far behind the northern endpoint of the transect.) Approaching the ridge, the soil gradually becomes shallower and the oak-hornbeam forest turns into a nontypical stand of the scree-forest Tilio tomentosa-Fraxinetum orni. Nearer to the ridge, the top-forest Aconito anthorae-Fraxinetam orni can be found. In the immediate proximity of the ridge, on the northern side, the closed rock sward Festuco rupicolae-Arrhenatheretum and the karst shrubforest Inulo spiraeifoliae-Quercetum pubescentis developed. The southern side is covered by a mosaic of the open rock sward Sedo sopianae-Festucetum dalmaticae and the karst shrubforest. This sequence is quite common in the Villány Mts. On the northern sides, near the ridges or plateaus, karst shrubforests and closed rock swards are situated on Mt Szársomlyó, Mt Tenkes, Mt Fekete and Mt Csukma. However, on the highest parts of the northern side of Mt Szársomlyó, the rock sward Festuco rupicolae-Arrhenatheretum is replaced by the association Inulo spiraeifoliae-Brometum pannoniéi. Also the rock-heath association Helleboro odori-Spiraeetum mediae lives in this location. Species composition of the communities under study clearly shows a dual character. In the case of the grasslands {Festuco rupicolae-Arrhenatheretum and Inulo spiraeifoliae-Brometum pannoniéi), species of beech and oak-hornbeam forests (e. g. Anemone ranunculoides, Corydalis solida, Galanthus nivalis, Ranunculus ficaria, Scilla vindobonensis, Stellaria ho los tea ) are scattered in a matrix of xerofrequent species (mainly Festuca rupicola, Festuca valesiaca and Bromus pannonicus). Other important xerofreTable 1: Spectra of the ecological indicator value T in the four associations studied, based on frequency data T5 T6 T7 T8 T9 Festuco rupicolae-Arrhenatheretum 28.01 30.14 29.3 1 11.58 0.95 Inulo spira eifoliae- Brometum pannoniéi 21.66 30.88 27.19 14.75 5.53 Helleboro odori-Spiraeetum tn ediae 34.39 31.85 20.3 8 12.74 1.27 Inulo spiineifoliae-Quercetum pubescentis 27.88 33.87 23.7 3 12.67 1.84 Table 2: Spectra of the ecological indicator value W in the four associations studied, based on frequency data W1 W2 W3 W4 W5 W6 W7 Festuco rupicolae-Art hertalheretum 5.79 18.32 38.06 15.72 17.73 2.25 2.13 Inulo spim eifoliae-Brometum pannotua 10.60 26.73 41.01 11.52 8.29 1.38 0.46 Helleboro odori-Spiraeetum mediae 1.27 8.54 28.4 S 19.62 28.16 7.91 6.01 Inulo spira eifoliae- Quercetum pubescentis 2.07 10.14 26.73 20.05 28.34 8.99 3.69 Table 3: Spectra of the ecological indicator value N in the four associations studied, based on frequency data M N2 N.i N4 N5 N6 N7 N8 N9 Festucorupicolae-Arrhenatheretum 12.17 27.30 19.98 13.24 7.45 7.09 8.75 2.25 1.77 Inuk spimeijoliae-Brometum pannoniéi 20.28 31.80 22.12 13.36 6.91 0.00 2.76 2.76 0.00 Helleboro odori-Spiraeelum mediae 2.53 20.25 17.09 15.82 13.29 7.59 13.29 6.65 3.48 I nub spiraeifoliae-Quercetum pubescentis 3.46 21.66 14.98 17.51 11.75 7.60 13.36 5.99 3.69
