1. UCL‐ELI, Université catholique de Louvain, Earth and Life Institute Croix du Sud 2 L7.05.09 Louvain‐la‐Neuve BE‐1348 Belgium
2. Federal Research Centre for Forests BFWA‐1131 Vienna Austria
3. Research Institute for Nature and Forest Gaverstraat 35 Geraardsbergen B‐9500 Belgium
4. WSL, Swiss Federal Institute for Forest, Snow and Landscape Research Birmensdorf CH‐8903 Switzerland
5. Norwegian Forest and Landscape Institute Pb 115 NO‐1431 Aas Norway
6. Department of Ecology Croatian Forest Research Institute Cvjetno naselje 41 HR‐10450 Jastrebarsko Croatia
7. Forest Research Alice Holt Lodge Wrecclesham Farnham Surrey GU10 4LH United Kingdom
8. IVL Swedish Environmental Research Institute Stockholm SE‐100 31 Sweden
9. METLA, Finnish Forest Research Institute PL 18 Vantaa FI‐01301 Finland
10. INIA, Centro de Investigación Forestal Ctra. de la Coruña km. 7.5 Madrid ES‐28040 Spain
11. Département Recherche et Développement ONF, Office National des Forêts Bâtiment B, Boulevard de Constance Fontainebleau F‐77300 France
12. Department of Geosciences and Natural Resource Management University of Copenhagen Rolighedsvej 23 Frederiksberg DK‐1958 Denmark
13. Istituto per i Sistemi Agricoli e Forestali del Mediterraneo ‐ U.O.S. Rende Via Cavour 4‐6 Rende I‐87030 Italy
14. CNR, Istituto di Biologia Agroambientale e Forestale ‐ U.O.S. Montelibretti Via Salaria km 29.300 Monterotondo Scalo I‐00016 Italy