1. Misión Biológica de Galicia (MBG‐CSIC) Apdo. 28 Pontevedra Galicia Spain
2. Departamento de Ecología Tropical Campus de Ciencias Biológicas y AgropecuariasUniversidad Autónoma de Yucatán Apartado Postal 4‐116, Itzimná. 97000. Mérida Yucatán Mexico
3. Forest and Nature Lab Ghent University Geraardsbergsesteenweg 267BE‐9090Gontrode‐Melle Belgium
4. Department of Ecology Environment and Plant Sciences Stockholm University Svante Arrhenius väg 20A Stockholm Sweden
5. Natural Resources Institute Finland. Haapastensyrjä Breeding Station FI‐16200Läyliäinen Finland
6. The National Research Centre for the Working Environment 2100Copenhagen Denmark
7. OneNature Ecology Bachlaan 306815 DEArnhem The Netherlands
8. Department of Agriculture Louis Bolk Institute Kosterijland 3‐53981 AJBunnik The Netherlands
9. Section for Ecology and Evolution University of Copenhagen 2200Copenhagen Denmark
10. BIOGECOINRAE, Univ. Bordeaux 33610Cestas France