B. Papp szerk.: Studia Botanica Hungarica 39. 2008 (Budapest, 2008)

Dobolyi, K., Erős-Honti, J.; Botta-Dukát, Z.: Habitat preference of Linum dolomiticum (Linaceae)

The special distribution pattern of Linum dolomiticum suggests that this species might have some preference either to vegetation types or to some plant species or to groups of species or to any of ecological factors. The present study has shown that the distribution pattern cannot be explained by the phytosociological pattern of the area. Although Linum dolomiticum occurs in all five types of non-forested vegetation in its geographical range, it prefers group 1 and 4, i.e. the slightly degraded open and closed dolomite rock grassland. These two groups represent two distinct vegetation types; lists of their diagnostic species do not overlap except Linum dolomiticum itself. It suggests that Linum dolomiticum has a private habitat preference. It has been supported by the fact that there are no species significantly associated to Linum dolomiticum. These results show that - within the non-forested parts of its range - the distribution of Linum dolomiticum has been determined by factors other than the cooccurring species. This factor may possibly be the distribution of its mycorrhiza partner fungi. Acknowledgement - This work was supported by the EU LIFE-Nature project entitled Restoration of Pannonic forests and grasslands on the Szénás-hills (LIFE 03 NAT/H/000167). REFERENCES BORHIDI, A. (1993): A magyar flóra szociális magatartás típusai, természetességi és relatív ökológiai értékszámai. (Social behaviour types of the Hungarian flora, its naturalness and relative ecological indicator values). - Janus Pannonius University, Pécs, 95 pp. BOTTA-DUKÁT, Z., CHYTRY, M., HÁJKOVÁ, P. and HAVLOVÁ, M. (2005): Vegetation of lowland wet meadows along a climatic continentality gradient in Central Europe. Preslia 77: 89-111. CHYTRY, M., TiCHY, L., HOLT, J. and BOTTA-DUKÁT, Z. (2002): Determination of diagnostic species with statistical fidelity measures. -/. Veg. Sei. 13: 79-90. DOBOLYI, K. (2001-2006): A Linum dolomiticum Borbds monitorozása. [Monitoring of Linum dolomiticum Borbás]. - Research report, Duna-Ipoly National Park Authority, Budapest, (mscr.). DOBOLYI, K. (2003): Phytosociological evaluation and multivariate analysis of the habitat of Linum dolomiticum Borbás (Linaceae) I. - Studia bot. hung. 34: 111-120.