1. Institute of Biology; Faculty of Natural Sciences and Mathematics; University of Ss. Cyril and Methodius; Skopje Republic of Macedonia
2. Macedonian Academy of Sciences and Arts; Skopje Republic of Macedonia
3. Institute of Biology; Research Centre of the Slovenian Academy of Sciences and Arts; Ljubljana Slovenia
4. University of Nova Gorica; Nova Gorica Slovenia
5. Iluka Chair in Vegetation Science and Biogeography; School of Biological Sciences; The University of Western Australia; Crawley, Perth WA Australia
6. Department of Geography and Environmental Studies; Stellenbosch University; Stellenbosch South Africa