U.S. Forest Service Research Note, Issues 79-1811967 - Forests and forestry |
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alkali sacaton Arizona aspen average bark basal area beetles Black Hills clearcut Collins Colorado State University cones cooperation with Colorado Creek deer density DEPARTMENT OF AGRICULTURE depth diameter Douglas-fir effect egg masses Engelmann spruce feet fescue Figure Forest and Range FOREST SERVICE RESEARCH Fort Collins germination grade grass growing season growth height herbicides illus inches increased located lodgepole pine logs measured mountain pine beetle National Forest Pennsylvania State University percent period picloram plants plots ponderosa pine precipitation Range Exp RANGE EXPERIMENT STATION RESEARCH NOTE RM Rocky Mountain Rocky Mountain Forest runoff sacaton sample seedlings seeds SERVICE RESEARCH NOTE shrub live oak slope snowmelt snowpack soil moisture soil temperatures south aspects species spruce-fir stand strips study area surface survival thinned timber tion treatment trees U. S. Forest Serv U.S. FOREST SERVICE University U.S. veneer watershed winter