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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 206 for “"Spruce"”.
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Extractives from Sitka spruce
… the distribution of extractives within Sitka spruce trees at different heights in the trunk, as well as the distribution between bark, rootwood, knotwood, heartwood and sapwood. The second aim of the work was to learn about the influence of yield class, site elevation, North/East location and …
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An investigation of the stresses in spruce headers
Thesis: B.S., Massachusetts Institute of Technology, Department of Mechanical Engineering, 1892
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Modeling Stem Taper of Southern Appalachian Red Spruce
Red spruce (Picea rubens Sarg.) is a commercially and ecologically important conifer species that primarily exists at northern latitudes of eastern North America. During the last glaciation, its range extended down the Appalachian Mountain chain into North Carolina and Tennessee. Since the planet …
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Petrogenesis of the Spruce Pine pegmatites, North Carolina
Pegmatites in the Spruce Pine district, North Carolina, are an example of muscovite class pegmatites that were derived from differentiation of a magma. There are eight granodiorite plutons in the Spruce Pine area ranging in size from 1 to 20 square kilometers that contain and are surrounded by …
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Ecological site quality, site index, and height growth of white spruce stands in the sub-boreal spruce zone of British Columbia
… between ecological site quality and white spruce [Picea glauca (Moench) Voss] height growth, vegetation, soil, foliar nutrient, and stem analysis data were obtained from 102 white spruce-dominated stands across a wide range of sites throughout the Sub-Boreal Spruce (SBS) biogeoclimatic zone …
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CO2 and Isotope Flux Measurements above a Spruce Forest
… data. They are applied to data obtained above a spruce forest in the Fichtelgebirge Mountains in Germany. The application of the quality criteria resulted in less systematic distribution of data gaps compared to a commonly applied criterion based on the friction velocity u-star measured above the …
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Plant Community Development of Isle Royale's Moose-Spruce Savannas
… and finally to a zootic subclimax dubbed “moose-spruce savanna.“ Ordination techniques were used to describe plant communities and to identify environmental variables that influence vegetation development. Non-parametric multiplicative regression was used to predict how these variables influenced …
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HABITAT USE BY SPRUCE GROUSE IN A FRAGMENTED SYSTEM
<p>The spruce grouse is a boreal obligate species that has been protected in Michigan since 1915 (Ammann 1963). Despite protection, the status of spruce grouse is uncertain in Michigan and other parts of the Midwest, and there have been few attempts at large-scale surveys or monitoring (Williamson …
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Genetic and Morphological Analyses of White Spruce in North America
… of central and western North American white spruce populations. Specifically I have (1) provided evidence supporting Hulten's long standing hypothesis that ice-free areas of Beringia served as northern refugia for arctic and boreal biota during the last Quaternary glaciation using cpDNA …
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Stand structure, growth, and mortality in southern Appalachian spruce-fir
… m) permanent plots at three southern Appalachian spruce-fir sites (Mt. Rogers National Recreation Area (NRA) of Virginia, the Black Mountains of North Carolina, and the Great Smoky Mountains of Tennessee and North Carolina). Baseline conditions were documented to accommodate future efforts to …
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Geology of the Spruce Run Mountain area, Giles County, Virginia
The Spruce Run Mountain area embraces about 45 square miles in the south-central portion of Giles County. It lies wholly within the Appalachian Valley and Ridge Province. The rocks exposed in the Spruce Run Mountain area range in age from Middle Cambrian to Lower Devonian. All the rocks are …
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Modeling forest protection values for the southern Appalachian spruce-fir forest
Household economic value for southern Appalachian spruce-fir forest protection may be sensitive to changes in the forest's physical condition. Further, different recreation groups may hold significantly dissimilar values for forest protection. Household and recreation group willingness to pay for …
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Relationship between rooting substances and the rooting response of Colorado blue spruce
Call number: LD2668 .T4 1984 J38
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Vegetative storage protein accumulation and physiological changes occurring within interior spruce seedlings
… storage proteins in nursery-grown Interior spruce seedlings (Picea glauca and P.engelmanni complex) was evaluated along with changes in seedling physiology. The 30 kD and 27 kD vegetative storage proteins (VSP) appeared after vegetative maturity (budset) and accumulated during the …
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Effect of dynamic loading on bending modulus of rupture of Eastern spruce
Thesis: B.S., Massachusetts Institute of Technology, Department of Mechanical Engineering, 1944
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