• Lawrence, Robert K.
  UMaine Cooperative Forestry Research Unit
  
• Houseweart, Mark W.
  UMaine Cooperative Forestry Research Unit
  

This study was cooperatively designed and initiated by federal and state agencies, and private timber companies to document the growth and mortality impacts of the most important forest insect pest in Maine: the spruce budworm, Choristoneura fumiferrana (Clem.). The initial phases of the study (plot establishment, design of tally forms, first-year measurements, check cruise, and analysis) were handled jointly by the U.S. Forest Service, the School of Forest Resources at University of Maine at Orono, and J.W. Sewall Company. In 1976, the management of this cooperative effort was transferred to the newly-developed Cooperative Forestry Research Unit.

The current impact study measured over 400 plots in a wide geographic area (the Maine Forest Service Spruce-Fir Protection District) on an annual basis since 1975. The duration of this study was scheduled for 5 years, but due to the importance of the spruce budworm to the economy of the State of Maine and due to the cooperation and support by 13 CFRU cooperators the study is to continue beyond  1980. The following report documents the impact of the spruce budworm in Maine from 1975 to 1979.