Ábrahám Levente (szerk.): Válogatott tanulmányok IV. - Natura Somogyiensis 15. / Miscellanea 4. (Kaposvár, 2009)

Dávid János: Új növénytársulás a Vitorági-erdő (Zselici Tájvédelmi Körzet) vegetációjában: Deshcampsio caespitosae-Inuletum helenii

Natura Somogyiensis 15 7-14 Kaposvár, 2009 A new forest fringes forb association: Deschampsio caespitosae—Inuletum helenii in SW-Hungary János Dávid University of Kaposvár Faculty of Pedagogy Department of Natural Sciences Methodology H-7400 Kaposvár Guba Sándor u. 40., Hungary, e-mail: david.janos@ke.hu Dávid, J.: A new forest fringes forb association: Deschampsio caespitosae-lnuletum helenii in SW-Hungary. Abstract: A new fringes forb association is described from the South Transdanubian Zselic Hills in SW Hungary. It develops at the lower parts of the slopes and bottoms in the wet valleys along the creekside alder­­forests, characterized by the dominance of Inula helenium and species of reed vegetation and wet meadows. Keywords: Zselic Hills, new forb association, SW-Hungary Introduction A new plant association was detected in the valleys of Forest of Vitorág, the southern part of the Zselic Hills, SW-Hungary. The hilly region is situated between the valley of Kapos river and the broad alluvial lowland of river Drava. The mainmass of the hilly region is built up of sediments of the Pannonian Sea during the Pliocene and covered by loess in the Pleistocene (Borhidi 1984, Marosi, Somogyi 1990). This loess cover has partly eroded during the Holocene, while on the remained loess ridges envolved steep slopes and narrow valleys evolved. The highest peaks are Ropoly (278 m) in the western and Hollófészek (357 m) in the eastern part of the Hills. On the broad central ridges zonal beechwoods (Vicio oroboidi-Fagetum) and hornbeam-oak woods with silverlime (Hellebore dumetorum-Carpinetum) (Borhidi 1984, Juhász 2008) are prevailing. The southwards directed valleys - surrounded by steep (30-40°) slopes like the Vitorág val­ley - where the holotype stand of the association developed black meadow soils cover the lower part of slopes and the bottom of the valley at a height of 165 m and approxi­mately horizontal situation. The ecotop of the stand is regularly flooded in spring time for shorter period. In the middle of summer the groundwater table is in 30-70 cm depth. The showy plant community was discovered and recognized in 1998, and its name and a short characterization published by the author in 2003 (in Borhidi 2003:350.). The validating, the name and description of the association according to the syntaxonomic rules are published here, as follows.

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