1. Centre for Advanced Studies of Blanes; Spanish National Research Council (CEAB-CSIC); Blanes Spain
2. Laboratoire GEODE; UMR 5602 CNRS; Université Toulouse-Jean Jaurès; Toulouse France
3. Geography Research Unit; University of Oulu; Oulu Finland
4. Department of Environmental Sciences; Section of Environmental Ecology; University of Helsinki; Lahti Finland
5. Metsähallitus, Natural Heritage Services; Vantaa Finland
6. Ruuhikoskenkatu 17; Salo Finland
7. Natural Environment Centre, Biodiversity; Finnish Environment Institute; Oulu Finland