Department of Forest Resources Management, University of British Columbia, 2424 Main Mal, Vancouver, BC V6T 1Z4, Canada;
Canadian Forest Service(Pacific Forestry Centre), Natural Resources Canada,506 Burnside Road West, Victoria, BC V8Z 1M5, Canada;
Department of Forest Resources Management, University of British Columbia, 2424 Main Mal, Vancouver, BC V6T 1Z4, Canada;
Department of Forest Resources Management, University of British Columbia, 2424 Main Mal, Vancouver, BC V6T 1Z4, Canada;
Faculty of Land and Food Systems, University of British Columbia,2357 Main Mal, Vancouver, BC V6T 1Z4, Canada;