1. Department of Biology and Biocenter Oulu University of Oulu FIN‐90014 Oulu Finland
2. UMR1202 Biodiversité Gènes et Communautés INRA F‐33610 Cestas France
3. UMR1202 Biodiversité Gènes et Communautés Université de Bordeaux F‐33410 Talence France
4. Department of Forest and Conservation Sciences and Centre for Forest Conservation Genetics University of British Columbia Vancouver BC V6T 1Z4 Canada
5. Department of Forest Ecology and Genetics INIA ‐ Forest Research Centre E‐28040 Madrid Spain
6. Department of Biosciences University of Helsinki FIN‐00014 Helsinki Finland
7. URFM UR629 Ecologie des Forêts Méditerranéennes INRA F‐84914 Avignon France
8. Centre d'Ecologie Fonctionnelle et Evolutive CNRS Université de Montpellier UMR 5175 F‐34293 Montpellier France
9. Institute of Biology Université de Neuchâtel CH‐2000 Neuchâtel Switzerland
10. Department of Forestry & Environmental Resources NC State University Raleigh NC 27695‐8008 USA