B. Papp szerk.: Studia Botanica Hungarica 37. 2006 (Budapest, 2006)

Bauer, Norbert: Open sandy grasslands of the Bakony region

new details regarding the well-known occurrences of mass species on calciphobe sandy grasslands and some other sandy plant species have appeared in BAUER (2001, 2004) and BAUER et al. (2004). Concerning the system of plant associations of Hungary, BORHIDI (2003) discusses the following open sandy grassland associations form Transdanubia: (1) Festuco clominii-Corynephoretum (Borhidi 1958) 1996. Remark: BORHfDI (1996) narrows the meaning of the name Festuco vaginatae-Corynephoretum Soó in Aszód 1935 used earlier for the stands of the Transdanubian calciphobe sandy grasslands, the latter one is considered the endemic association of the Nyírség, the vicariant association of the Transdanubian grasslands; and he also discusses both associations in different order. In the sandy grasslands of the Little Hungarian Plain and along the River Morava the Festuca vaginata W. et K. subsp. dominii (Krajina) Soó association is typical. (2) Thymo angustifolii-Corynephoretum canescentis Klippel 1954. (3) Festucetum vaginatae (Rapaics ex Soó 1929) emend. Borhidi 1996. Remark: BORHIDI (1996) gives a more specific interpretation of description. Various Central European plant association monographs (see MUCINA et al. 1993, POTT 1995, BORHIDI 2003) discuss the sandy plant associations based on the publications mainly of KLIKA (1931, 1934), Soó (1933a,/?, 1957), TÜXEN (1937, 1967), KRIPPEL (1954), BORHIDI (1956). As for the lime-poor sandy grasslands of a more Atlantic influence, dominated by Corynephorus canescens, several relevés were published (LlBBERT 1940, KNAPP and ACKERMANN 1952, OBERDORFER 1957, FUKAREK 1961, PHILIPPI 1973, KORNECK 1974, HOHENESTER 1967). The ecological characteristic features of these grasslands were examined from several aspects (VOLK 1931, BERGER-LANDEFELDT and SUKOPP 1965, JECKEL 1984, JENTSCH et ai 2002, JENTSCH and BEYSCHLAG 2003). The importance of well-documented, classical phytocoenological works despite the well-known limits of the methodology - is acknowledged even today (BAGI 1991, 1998, FEKETE 1995, BARTHA 2000). These are essential references for nature conservation and vegetation mapping and also for any biogeographical syntheses which require a thorough documentation of our quickly transforming natural environment. For the sake of a more objective comparability of coenological samples, BAGI (1998) suggests the establishment of a reference database for associations based on the Zürich-Montpellier method, which analyses according to flora regions. The present article intends to introduce the open sandy grasslands of the Bakony region (looked upon here as a unique geomorphological phenomenon) and based on the classification of coenological samples, to place these into the larger