1. Department of Renewable Resources, University of Alberta, Edmonton, Alberta T6G 2H1, Canada
2. Department of Forest Engineering, Resources, and Management, Oregon State University, Corvallis, Oregon 97331, United States
3. Department of Civil and Environmental Engineering, University of Waterloo, Waterloo, ON N2L 3G1, Canada
4. Department of Geography and Environmental Management, University of Waterloo, Waterloo, ON N2L 3G1, Canada