- Zellers, Kate E.
University of Maine
The spruce budworm epidemic of the 1970s and 1980s led to the salvage harvesting of spruce-fir stands, serving as a release for scattered immature eastern white pine (Pinus strobus L.) trees. These pines are now growing as large isolated reserve trees above a mixed conifer regeneration stratum. The objectives in this study were to determine any effect of varying levels of basal area of large pine reserve trees may have on (1) the densities of both eastern white pine and non-pine species in the developing regeneration stratum, and (2) the height growth of eastern white pine in the developing regeneration stratum (3) incidence of white pine weevil injury of eastern white pine in the developing regeneration stratum, and (4) determine if any differences in quality exist between the two-aged stand type and the precommercially thinned stand type, relative to white pine weevil attack, blister rust infection, and branch shedding.