1. Biometrics Unit, Forest Stewardship and Trade Branch, Alberta Agriculture and Forestry, 9920-108 Street, Edmonton, AB T5K 2M4, Canada.
2. Canadian Natural Albian Sands, P.O. Box 5670, Fort McMurray, AB T9H 4W1, Canada.
3. Department of Renewable Resources (338B Earth Sciences Building), University of Alberta, Edmonton, AB T6G 2H1, Canada.
4. Division of Forestry and Natural Resources (322 Percival Hall), West Virginia University, P.O. Box 6125, Morgantown, WV 26506-6125, USA.