Ábrahám Levente (szerk.): Válogatott tanulmányok III. - Natura Somogyiensis 12. (Kaposvár, 2008)

Salamon-Albert Éva-Horváth Ferenc: Vegetation of Külső-Somogy in Hungary II.

Fig. 3: Patches distribution of non-woody habitat types and habitat groups in KülsőSomogy. Occurrence: percentage of cases in 95 quadrats, occurrence/quadrat: mean number of patches per valid quadrats with standard deviation in habitat groups meadows'and tall herb communities (D group: 748 ha=1.8%). In this habitat group mesotrophic meadows are the most prominent habitat type occuring with the largest relative percentage (D34: 697 ha=1.6%). Molinia meadows (D2: 4.6 ha), water-fringing and fen tall herb communities (D5: 22 ha) and tall herb communities of floodplans and marshes (D6: 23.8 ha) are sporadic and have a small areal contribution. The fourth habitat group is the 'dry and semi-dry closed grasslands' (H group: 716 ha=1.7%) containing several types of grasses adapted to climatic conditions. The largest habitat type in this group is 'closed steppes on loess, clay or tufa' (H5a: 515 ha=1.2%) existing in the place of woodland cuttings or old wastelands. 'Bromus erectus-Brachypodium pinnatum xeromesophilous grasslands, dry tall herb communities, forest steppe meadows' (H4: 127 ha) and 'closed sand steppes' (H5b: 73.9 ha) are more insignificant in this habitat group. Habitats controlled by permanent water table are in the group of'euhydrophyte habitats' (A group: 73.9 ha=0,2%) with the most important habitat type 'standing water communities with Trapa, Lemna, Salvinia and Ceratophyllum' (Al: 69 ha=0.16%). 'Colline and montane hay meadows, acid grasslands and heaths' existing in the place of woodland cuttings form a characteristic group with small areal proportion (E group: 488 ha=l .2%) dominated by 'Arrhenatherum hay meadows' (El: 452 ha=T.l%). Habitat types of'soft and hard water flushes' (CI: 0.06 ha) and 'semi-desert vegetation on loess cliffs' (12: 0.06 ha) are attaching to habitat list as community fragments with small extensions. Roughly estimated area of habitat types or groups and occurrences of them could give information about vegetation patch statistics for 95 quadrats and average occurence per quadrat (Fig. 3). In the database 2295 occurrences were recorded for 25 grassland habitat types existing at least with one case in every valid quadrat. In the first series we could analyse the occurrence percentage for the non-woody habitats and groups. The most distinct and related vegetation patches are revealed in case of O habitat group (1233 cases, 41.2%) especially. The number of occurrences and their proportion decreases in order to OC (622 cases, 20.1%), OB (545 cases, 18.2%) and OA (66 cases, 2.2%). The second