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

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

with the exception of the south-eastern parts. By studying spatial attributes it is established that quadrats with larger summarized territory of grasslands have a larger proportion of uncharacteristic non-woody habitat types opposite to semi-natural ones. Habitat diversity is a little bit bigger in the case of wet grasses than dry and semi-dry grassland habitat types and groups at landscape scale. The actual hydrological status could primarily and essentially determine the occurrence of non-woody habitat types or the distribution of patches. Outside parts along the Kapos River are relatively poor in any kind of grasslands, especially in xero-mesophylous closed semi-natural ones. Settlements and land use practices of Külső-Somogy seem to be the hampering or endangering factors for grassland existence, regeneration or spreading. After all, we could presume that spatial patterns of non-woody habitat types are strongly influenced by natural and human impact as well. Acknowledgements Data for the analyses were delivered from MÉTA workgroup, Institute of Ecology and Botany of the Hungarian Academy of Sciences (Vácrátót, Hungary). The project was financed by the grant of OM-NKFP/2002: "Magyarország természetes növényzeti örökségének felmérése és összehasonlító értékelése". Further participating botanists are Bódis J., Botta-Dukát Z., Csiky J., Dávid J., Friedrich A., Horváth A., Szalóky I., Juhász M., Kádár G., Király G., Mányoki G., Ortmann-Ajkai A., Pándi L, Pfeiffer N., Szabó A., Varga A. and Zsidákovits J. contributed to field data collection. Fig. 7: Territorial extension (circle diameter) and proportion (circle segment) of xero-mesophilous closed grassland habitat types in Külső-Somogy