1. Faculty of Biology, Conservation Biology; Philipps-University Marburg; Marburg Germany
2. Department of Ecology; Faculty of Biology; Philipps-University Marburg; Marburg Germany
3. Department of Geography; University of Cambridge; Cambridge UK
4. Department of Agricultural, Food and Environmental Sciences; Marche Polytechnic University; Ancona Italy
5. Dendro Science; Swiss Federal Research Institute WSL; Birmensdorf Switzerland
6. Bavarian Forest National Park; Grafenau Germany
7. INRA; UR Ecologie des Forêts Méditerranéennes; Avignon France
8. National Research Council; Institute of Biosciences and Bioresources; Firenze Italy
9. CzechGlobe, Global Change Research Institute CAS and Masaryk University; Brno Czech Republic