Canadian Forest Service Publications
Outbreak patterns of the spruce budworm and their impacts in Canada. 2006. Gray, D.R.; MacKinnon, W.E. The Forestry Chronicle 82: 550-561.
Issued by: Atlantic Forestry Centre
Catalog ID: 26309
Availability: PDF (request by e-mail)
Historical records (1941-1998) of spruce budworm defoliation in Canada were analyzed to estimate variability in the spatial and temporal patterns of defoliation, and to determine 27 representaive patterns that adequately describe the spatial and temporal variability in defoliation. Spatially referenced estimates of growth loss and mortality resulting from an outbreak of spruce budworm were obtained by subjecting a natioanl forest inventory to the spatially defined representative patterns of defoliation. The use of these estimates in determining the status of Canada's forests as a carbon source or sink is discussed.