1. Department of Forestry and Natural Environment, International Hellenic University, GR-66100 Drama, Greece
2. Department of Geography, Harokopio University of Athens, El. Venizelou 70, GR-17676 Kallithea, Greece
3. Department of Environmental Sciences, Ionian University, GR-29100 Zakynthos, Greece
4. Frederick Research Center, Filokyprou 7-9, Palouriotissa, Nicosia CY-1036, Cyprus
5. Nature Conservation Unit, Frederick University, P.O. Box 24729, Nicosia CY-1303, Cyprus