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Showing 1 to 15 of 15 for “"Quercus rubra L."”.
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Chemical interactions between rainfall and northern red oak (Quercus rubra l.) foliage
… rain solutions and northern red oak (Ouercus rubra L.) leaves of trees growing in fertile, limestone-derived soil and less fertile, sandstone/shale-derived soil. Leaves harvested from trees growing on the fertile site had greater concentrations of total N, P, K, Ca, and Mn but less total Mg …
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Sensitivity of northern red oak (Quercus rubra L.) to variation of temperature and moisture availability along latitudinal and longitudinal climate gradients
… variations in climate using tree-ring data for Quercus rubra L. from 71 study sites across latitudinal and longitudinal temperature and precipitation gradients in eastern North America. Correlation analyses were used to identify significant site-specific associations between radial growth …
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"Determining the Cause of Abnormal Leaf Development ""Leaf Tatters"" on White Oak (Quercus Alba L.), and Northern Red Oak (Quercus Rubra L.)"
Emerging leaves of white oak and to a lesser extent northern red oak can develop abnormally. This abnormality is referred to as leaf tatters. The cause of tatters has previously been linked to environmental stress, insect feeding, or herbicide drift. We theorized that herbicide drift was the cause …
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A Dendrochronological Analysis of Vegetation Change and Climate History in Two Southern Appalachian Balds, Craggy Gardens and Big Bald, NC
… and 2) investigating tree-growth responses of Quercus rubra L. to climatic factors at Craggy Gardens and Big Bald, North Carolina (high elevation forest-grass ecotones). Results indicate that historical grazing and land management have been responsible for vegetation changes at Craggy Gardens, …
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Stand Dynamics in a Southern Appalachian Montane Pine Barren, Warm Springs Mountain, Virginia
… such as dwarfed Pinus rigida (Mill.) and Quercus ilicifolia (Wangenh.), this shrubland is home to numerous rare plants and invertebrates. We used vegetation analysis and dendrochronology to document establishment and recruitment patterns and to identify successional trends at this site. …
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Successive Land Surveys as Indicators of Vegetation Change in an Agricultural Landscape
… Results showed significant shifts in white oak (Quercus alba L.), chestnut (Castanea dentate Marsh. Borkh.), chestnut oak (Quercus prinus Wild.), black oak (Quercus velutina Lam.), red oak(Quercus rubra L.), black locust (Robinia pseudoacacia L.), yellow poplar (Liriodendron tulipifera L.), and …
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Analysis of Red Oak Timber Defects and Associated Internal Defect Area for the Generation of Simulated Logs
… Station in Princeton, West Virginia for red oak (Quercus rubra, L.) logs. These data were analyzed to determine distributions for log and external defect attributes, and the information was used in the program to assure realistic log generation. An attempt was made to relate the external defect …
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Acorn Caching and Consumption of Weevil-infested Nuts: Possible Means of Tannin Circumvention for the Blue Jay
… reduced tannin levels in northern red oak (Quercus rubra L.) and bur oak (Ouercus macrocarpa Michx.) acorns, making them more digestible to the jays. Acorns were X-rayed to determine infestation status and then offered to individual jays in an aviary setting. Jays handled and consumed …
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Seed dormancy and germination of northern red oak
Northern red oak (Quercus rubra l.), a valuable timber in species in the eastern United States, has a delayed growth in the early years of establishment. Freshly harvested northern red oak seed exhibit dormancy that may be broken by stratification or pericarp removal. In this research, germination, …
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Coordination of physiological and morphological acclimation of shade-grown tree saplings to late-season canopy gap formation
… of temperate deciduous hardwoods: red oak (Quercus rubra L.), sugar maple (Acer saccharum Marsh.), tulip poplar (Liriodendron tulipifera L.), and white ash (Fraxinus americana L.). Physiological acclimation responses included higher photosynthetic rates in shade-developed foliage upon …
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Growth and dieback of underplanted northern red oak seedlings under various light and moisture conditions
… relations of underplanted northern red oak (Quercus rubra L.) seedlings were investigated. Greenhouse-grown red oak seedlings were subjected to 0, 63, or 92% shade and soil water potential was permitted to reach -0.3 or -2.0 MPa before rewatering. In a field study, underplanted northern red …
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Post-Transplant Root Production, Mortality, and Periodicity of Landscape-Sized Shade Trees
… root system regeneration of northern red oak (Quercus rubra L.) and willow oak (Q. phellos L.), 2) determine the effect of transplant timing and nursery production system on root, shoot, and trunk growth periodicity of balled-and-burlapped (B&B) and pot-in-pot (PIP) sugar maple (Acer saccharum …
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Stress Physiology of Phytophthora-canker Pathogens in Landscape Trees: impacts, mechanisms, and mitigation through biochar amendment
… amendment in two common landscape tree species: Quercus rubra (L.) and Acer rubrum (L.), and 3), how does biochar improve resistance against stem lesions. Inoculation of A. rubrum seedlings with P. cactorum resulted in a dramatic and sustained reduction in carbon assimilation rates and stomatal …
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Acid deposition effects on soil chemistry and forest growth on the Monongahela National Forest
… evaluated the utility of a northern red oak (Quercus rubra L.) dendrochronology on two FIA plots. This analysis suggests that pollution on the MNF caused a decrease in growth rate during the 50-year period from 1940 to 1990. There were no differences among ring width increment and basal area …