• MacLean, D.A.
  University of New Brunswick, Faculty of Forestry and Environmental Management
  
• Erdle, T.A.
  University of New Brunswick, Faculty of Forestry and Environmental Management
  
• MacKinnon, W.E.
  Natural Resources Canada, Canadian Forest Service--Atlantic
  
• Porter, K.B.
  Natural Resources Canada, Canadian Forest Service--Atlantic
  
• Beaton, K.P.
  Natural Resources Canada, Canadian Forest Service--Atlantic
  
• Budd, M.
  Natural Resources Canada, Canadian Forest Service--Atlantic
  
• Cormier, G.
  Forest Protection Limited
  
• Morehouse, S.
  New Brunswick Department of Natural Resources and Energy, Forest Management Branch
  

The Spruce Budworm Decision Support System quantifies the marginal timber supply (m3/ha) benefits of protecting stands against spruce budworm (Choristoneura fumiferana (Clem.)) defoliation. It allows the user to quantify the volume benefits of protecting alternative areas and determine effects on forest development and annual allowable cut. Implementing the SBW DSS on a land base involves seven steps:(i) defining the base defoliation, or an explicit forecast of the defoliation level include in yield forecasts; (ii) compiling historical defoliation; (iii) defining base volume yields; (iv) obtaining the harvest schedule from the land base management plan; (v) building the stand impact matrix, which quantifies direct impacts of defoliation; (vi) building the forest impact matrix, which quantifies indirect impacts of defoliation on harvest schedules; and (vii) building the stand-history file, which contains all stand-level and defoliation data. These tasks are usually completed every 5 years.