1. Centre for Forest Research Université du Québec à Montréal Montréal QC Canada
2. Institute for Alpine Environment Eurac Research Bozen/Bolzano Italy
3. Institut des Sciences de la Forêt Tempérée Université du Québec en Outaouais Ripon QC Canada
4. Harvard Forest Harvard University Petersham Massachusetts USA
5. Liberal Arts Department New England Conservatory Boston Massachusetts USA
6. Department of Ecology and Evolution University of Toronto Toronto Ontario Canada
7. Forest Sciences and Technology Centre of Catalonia CTFC Solsona Spain