1. Department of Forest Resources Management, The University of British Columbia, 2424 Main Mall, Vancouver, BC V6T 1Z4, Canada.
2. Resource Practices Branch, British Columbia Ministry of Forests, Lands, Natural Resource Operations and Rural Development, P.O. Box 9513, Stn. Prov. Govt., Victoria, BC V8W 9C2, Canada.
3. Forest Analysis and Inventory Branch, British Columbia Ministry of Forests, Lands, Natural Resource Operations and Rural Development, P.O. Box 9512, Stn. Prov. Govt., Victoria, BC V8W 9C2, Canada.