Skip to main content

Effects of Mixed Stand Management to Reduce Impacts of Spruce Budworm Defoliation on Balsam Fir Stand-Level Growth and Yield

Buy Article:

$29.50 plus tax (Refund Policy)


Mixed hardwood-balsam fir stand management has been proposed as one silvicultural technique to reduce spruce budworm damage to balsam fir. An analysis was conducted using published results from New Brunswick, Canada, and northern New England, USA, to assess whether optimum hardwood levels (percent volume) could be determined for various levels of budworm defoliation. The goal was to maximize standing balsam fir volume and to determine trade-offs between reduced damage (hence reduced volumes losses) versus the amount of fir volume lost as a result of allocating growing space to hardwood species. Optimum hardwood levels depended on severity of budworm attack. Below 45% defoliation (5 yr average), the amount of balsam fir volume lost to increased hardwood growing space exceeded the amount of volume protected. As defoliation severity increased above 45%, the optimal hardwood levels increased. At severe levels of defoliation (> 75%) optimal hardwood content was approximately 50% of initial standing volume. The results suggest that mixed stand management can potentially reduce balsam fir volume losses in areas with frequent severe spruce budworm outbreaks. North. J. Appl. For. 16(1):19-24.

Document Type: Journal Article

Affiliations: University of New Brunswick, Applied Stand Dynamics and Management Lab, Faculty of Forestry and Environmental Management, P.O. Box 44555, Fredericton, NB E3B 6C2 Canada

Publication date: 1999-03-01

More about this publication?
  • Each regional journal of applied forestry focuses on research, practice, and techniques targeted to foresters and allied professionals in specific regions of the United States and Canada. The Northern Journal of Applied Forestry covers northeastern, midwestern, and boreal forests in the United States and Canada.
  • Membership Information
  • Ingenta Connect is not responsible for the content or availability of external websites
  • Access Key
  • Free ContentFree content
  • Partial Free ContentPartial Free content
  • New ContentNew content
  • Open Access ContentOpen access content
  • Partial Open Access ContentPartial Open access content
  • Subscribed ContentSubscribed content
  • Partial Subscribed ContentPartial Subscribed content
  • Free Trial ContentFree trial content
Cookie Policy
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more