• Moody, B.H.
  Newfoundland Forest Research Centre
  

The productive balsam fir - spruce forest of Newfoundland and Labrador was surveyed in August 1977 and 1978 to detect and assess the damage cause by the present spruce budworm [Choristoneura fumiferana (Clem.)] outbreak. A general aerial mapping, augmented by ground sampling, was used in the survey. In Newfoundland, tree mortality in 1978 occurred in 300 to 400 hectares of merchantable balsam fir stands containing a total timber volume of 22,398,521 cubic meters. These stands contained an estimated 6,547,000 cubic meters of timber as dead trees and 4,841,000 cubic meters as dying trees. In Labrador, the volume of dead and dying trees scattered within severely damaged areas (31,796 hectares) was about 770,000 cubic meters. The accuracy of the damage assessment method is estimated and discussed.