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Effects Of Precommercial Thinning On Snowshoe Hares, Small Mammals, And Forest Structure In Northern Maine, Jessica A. Homyack
Effects Of Precommercial Thinning On Snowshoe Hares, Small Mammals, And Forest Structure In Northern Maine, Jessica A. Homyack
Electronic Theses and Dissertations
The extent of precommercial thinning (PCT) to manipulate stand density in overstocked, regenerating stands and to accelerate growth, yield, and the rate of development of crop trees has been increasing within the Acadian forest of northeastern North America. Although the silvicultural responses of crop trees to thinning are well studied, few studies have evaluated the effects of PCT on forest-dependent wildlife and their habitat. I investigated the effects of PCT and stand succession on snowshoe hares, small mammals, and forest structure on 38 stands (25 treated with PCT, 13 unthinned stands) from 1 to 16 years post-treatment within 7 townships …
Crop Tree Growth And Quality Twenty-Five Years After Precommercial Thinning In A Northern Conifer Stand, Leah M. Phillips
Crop Tree Growth And Quality Twenty-Five Years After Precommercial Thinning In A Northern Conifer Stand, Leah M. Phillips
Electronic Theses and Dissertations
Growth characteristics of selected Picea rubens Sarg. (red spruce) and Abies balsamea (L.) Mill. (balsam fir) crop trees were studied in a northern conifer forest to determine the effects of precommercial thinning (PCT) 25 years after initial treatment. Two measures of growth efficiency (GE, growth per unit of growing space) were examined: stemwood increment (dm3) per unit of projected leaf area (PLA) (m2) and stemwood increment (dm3) per unit of crown projection area (CPA) (m2). Stem form differences were evaluated by comparing stem taper between species and treatments. Branch diameters were measured between 1 .O - 2.0 meters above breast …