1. Department of Natural Resource Sciences; McGill University; Ste-Anne-de-Bellevue Canada
2. Population Ecology Group, Faculty of Forestry and Environmental Management; University of New Brunswick; Fredericton Canada
3. Natural Resources Canada, Canadian Forest Service-Atlantic Forestry Centre; Fredericton Canada
4. Département des sciences du bois et de la forêt; Université Laval; Québec Canada