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Showing 1 to 20 of 24 for “"Quercus spp."”.
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Solar drying of green oak (Quercus spp.) lumber
A comparison was made of the rates and quality of solar and air drying from the green condition of a mixture of red and white oak 5/4 inch lumber during winter conditions in Blacksburg, Virginia. The solar kiln was of a semi-greenhouse type, having a capacity of 150 board feet and provided with an …
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Check reduction in red oak (Quercus spp.) lumber using diffusion resistant coatings
Approximately five percent of the volume of red oak lumber which is harvested for use in the furniture and flooring industries in the United States is unusable due to surface checking. This thesis investigated the possibility of reducing surface checking by controlling the lumber boundary …
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Effects of Tornado Damage, Prescribed Fire, and Salvage Logging on Oak (Quercus Spp.) Saplings in Upland Oak Forests in Northern Mississippi
After European colonization and extensive logging folloby long periods of fire suppression, oak dominated forests, woodlands, and savannahs are being replaced by an unprecedented forest ecosystem. In Mississippi, these new forest systems are dominated in the mid- and understory by mesophytic …
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Nutrient Dynamics of Forest Communities in Central Illinois
… dominant), and (2) an upland community (Quercus spp. and Carya spp. dominant).
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Interspecific wood trait variation predicts decreased carbon residence time in changing forests
… We hypothesized the increasing dominance of Acer spp. in eastern forests, due to disturbance regime changes, is driving a decrease in the mean species-weighted deadwood decay rate, decreasing the total C storage capacity of regional forests. 3. We observed significantly greater interspecific …
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Influence of gypsy moth induced oak mortality on a black bear population
… to gypsy moth (Lymantria dispar) induced oak (Quercus spp.) mortality. Oak species composed >50% of the forest canopy of SNP, and oak mortality rates ranged from 1- ≥48%. I compared black bear population dynamics, food habits, movements and habitat use to preinfestation data collected in SNP …
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Food habits of the Allegheny woodrat (Neotoma magister )
… 5 food items were fungi, blueberries ( Vaccinium spp.), acorns (Quercus spp.), ferns ( Dryopteris spp.), and lichens. In the Ridge and Valley woodrats ate primarily blackberry (Rubus spp.) leaves, fungi, greenbrier (Smilax spp.) leaves, acorns, and oak leaves. Additionally, we examined the effects …
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Diagnóstico forestal y Agroforestal de la micro cuenca del Municipio de Jinotega, Nicaragua
… en subparoalas de 200 m2. predominando el Roble (Quercus spp) con un 40 %.
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Savanna Restoration Through Prescribed Fire: Demographic and Physiological Responses of Oak and Hickory Seedlings and Saplings to a Changing Light Environment
… and physiology of seedlings and samplings (Quercus spp., Carya spp., Juniperus spp.). Following prescribed burns, canopy light penetration was significantly greater in burned forest sites than in unburned forest sites. Density, basal area, mortality, and recruitment appear to be increasing …
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An Assessment of the Utility of a Non-Metric Digital Camera for Measuring Standing Trees
… and used to estimate the volume of 20 red oak (Quercus spp.) stems ranging in diameter at breast height from 16 to over 60 cm and height from 12 to 20 meters. Images were taken from four orthogonal directions around the each stem. Diameter estimates from matching camera to stem distances (3 to …
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Spatial, temporal and dendrochronological comparisons of mercury in Ontario deciduous trees
… a variety of deciduous species including Acer spp. (sugar, silver and red maple), Quercus spp. (red oak), Populus spp. (eastern cottonwood), and Salix spp. (willow) mainly from the Dorset and Kingston, ON regions. Examination of seasonal variation of Hg concentrations ([Hg]) in leaves indicated …
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Ecology of raccoons at High Knob Recreation Area, Virginia
… believed to be habitat quality related. Acorns (Quercus spp.) and beech nuts (Fagus grandifolia) were the most important food items making up 29.2% and 20.8% of aggregate weight, respectively. Home range sizes were larger among males (649.1 ± 112.6 ha) and females (239.0 ± 40.0 ha) at High Knob …
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Destination of Isotopic Nitrogen Fertilizer Under Varying Herbicide Regimes in a Mid-Rotation Loblolly Pine (Pinus taeda L.) Plantation in the Piedmont of Virginia, USA
… Red maple (Acer rubrum) and oak species (Quercus spp.) were the most common competitors but neither had a uniquely pronounced effect on pine nitrogen sequestration. My data indicate that increasing competition reduces fertilizer N foliar concentrations in crop pine trees but at a modest …
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Spring Phenology and Trophic Ecology of Trees, Caterpillars, and Migrating Neotropical -Nearctic Songbirds
… and folivory in Juglans nigra (black walnut) and Quercus macrocarpa (bur oak) canopies was increased 100%. Birds foraged disproportionately in rare trees [(<5% relative basal area; J. nigra, Q. macrocarpa, Ulmus americana (American elm), and Ulmus rubra (slippery elm)], and avoided a dominant tree …
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Fire-driven changes to tree drought vulnerability and carbon storage in temperate broadleaf forests
… vulnerability of juvenile and adult oaks (Quercus spp.). Specifically, I explore linkages between fire-driven shifts in plant functional traits and soil organic carbon stocks. To evaluate drought-fire interactions on juvenile trees, I experimentally imposed drought on existing and planted …
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Changes in soil properties under experimental tree plots on the Isle of Rum
… assess the effects of 35 years of birch (Betula spp.), oak (Quercus spp.) and Scots pine (Pinus sylvestris) growth on the relatively fertile, mineral soils at Harris and the less fertile, organic soils at Kilmory Fank. Significant changes in soil characteristics were identified beneath all three …
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Soil Carbon and Nutrient Cycling Across Cover Types in Southern Appalachian Hardwood Forests
… among four distinct cover types, white oak (WO, Quercus alba L.), scarlet oak (SO, Quercus coccinea Muech.), chestnut oak (CO, Quercus montana Wild.) and a pine-oak co-dominant cover (PO, Pinus spp. and Quercus spp. (primarily Pinus pungens Lamb. and Q. montana)). Null hypotheses were that: (1) …
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Holocene landscape history of southern Portugal
… by Pinus, evergreen and deciduous oaks (Quercus spp.) and associated understorey shrubs and herbs. After c. 5000 cal BP, dramatic declines in arboreal pollen are recorded, associated with an increase in moor and heath taxa, notably Ericaceae and Cistaceae. The results permit a …
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Building a better burn: Fuel characterization and fire effects in silvicultural systems in the southern United States
… to a decline in xerophytic pine (Pinus spp.) and oak (Quercus spp.) forests in the eastern United States and in the Appalachian Mountain region. The success of restoration efforts involving prescribed fire is heavily influenced by the arrangement and composition of wildland fuels, which …
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