Valsorda, Gualdo Tadino - Viola eugeniae Parl.
M. Sarika, I. Bazos, S. Zervou, A. Christopoulou
Department of Ecology and Systematics, Faculty of Biology, University of Athens, Panepistimiopolis, 15784 Athens, Greece.
Vegetation of the European-network ‘Natura 2000’ conservation areas of Naxos island and of nearby islets Mikres Kyklades, including calcareous rocky slope, maquis, phrygana, coastal cliff, dune, marshland, wet meadow, reed bed and aquatic habitats, was studied during 2000. The flora of the investigated regions consists of 365 taxa belonging to 78 families and 247 genera, some of which are endemic or rare in Greece. The majority of the represented in the life form spectrum taxa are Therophytes, Hemicryptophytes, Geophytes and Chamaephytes. From a chorological point of view, the Mediterranean element outweighs the rest, followed by the most diverse group of widespread taxa. The macrophytic vegetation was analysed following the Braun-Blanquet method. Twenty nine plant communities-among them one described for the first time (Theligono cynocrambis-Parietarietum lusitanicae), belonging to nineteen alliances, eighteen orders and fifteen phytosociological classes, were found. The distinguished vegetation units are described, presented in phytosociological tables and compared with similar communities from other Mediterranean countries. In the study area seventeen habitat types were delimited through the assessment of the dominant vegetation types, of which fifteen are listed in Annex I of the 92/43/EU Habitats Directive and two (934A, 1260) are additional Hellenic habitat types (not included in the Directive). Among them three (1150, 2250, 3170) are considered as priority habitat types, while the Hellenic habitat type 1260 is considered as rare in the Natura 2000 sites of Greece.
flora, Greece, habitat types, insular ecosystems, vegetation