Global ETD Search
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 41 for “"radial growth"”.
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Spatial and temporal analysis of radial growth in an Appalachian watershed
… tree-ring data to examine relationships between radial growth and climate for four hard wood species, yellow-poplar, northern red oak, chestnut oak and red maple, growing on contrasting topographic aspects of a watershed in north-central West Virginia.;The study showed that all species except …
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Radial growth response of eastern hemlock to infestation of hemlock woolly adelgid
… used to determine if there was a difference in radial growth pre- and post-HWA arrival. To compare differences in pre- and post-HWA cell properties, t-tests were used. For dendroclimatic analysis, Pearson correlation coefficients were calculated between radial growth and monthly climate …
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Tropical Cyclone Storm Surge Detection in Slash Pine Radial Growth along the Northern Gulf of Mexico Coastline
… (U.S.). Previous research has shown slash pine radial growth trends can be examined to identify long and short-term growth changes associated with TC passage, providing insight into overall stand health and resiliency through time. However, this previous research encompasses just one site in …
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Climatic and edaphic influences on the radial growth of eastern redcedar (Juniperus virginiana), Smoke Hole Canyon, West Virginia
… to grow.;This study examines factors affecting radial growth of eastern redcedar (Juniperus virginiana) from Smoke Hole Canyon, West Virginia. The three study sites (BBS, EAR, and TNC) are well within the distribution of J. virginiana, but are typically drier and rockier than other locations in …
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Radial growth patterns of jack pine in relation to climate, moisture availability, and dwarf mistletoe infection in the Boreal Plains Ecozone of Saskatchewan, Canada
… that affects resource allocation, water use, and growth. Despite being one of the most damaging pests to jack pine in the Canadian boreal forest, it has not been well studied in relation to the potential impacts of climate change. I used tree ring and climate data to investigate growth-climate …
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Mapping the Distribution of Barrier Island Slash Pine Woodland and Determining Growth Responses of Pinus elliottii to Hurricane Katrina (2005) on Cat Island, Mississippi
… evaluate relationships of elevation with mean radial growth rate (mm y ̄ ˡ), stem diameter (cm), and change in radial growth rate (% change) five years post Hurricane Katrina. The overarching hypothesis is that growth rate in <em>P. elliottii </em>on Cat Island, is a function of elevation. The …
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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
… in response to global climatic warming. Climate-growth response algorithms in forest simulation models that represent the influence of climate on tree growth are based on the geographic range limits of a species. These models assume that temperature limitations control the latitudinal range …
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Molecular mechanisms of radial axonal growth : insights from analysis of neurofilament gene-targeted mice
… to send signals rapidly, axons must undergo growth that expands their diameter. This process is known as radial growth and is dependent upon insulating myelin that wraps around the axon and the expression of proteins known as neurofilaments (NFs) within the axon. NFs are cytoskeletal proteins …
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Forest Disturbances: Occurrences and Impacts of Recreational, Hydrogeomorphic, and Climatic Disturbances
… and identify impacts hydrology and climate on radial growth in riparian forested wetlands, and quantifies influences of biotic and abiotic factors on the occurrence of frost-induced cambial damage. In southwestern Virginia, modeled soil erosion rates for multiple-use (hiking, mountain biking, …
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A post-harvest evaluation of mechanized thinning in natural loblolly pine in the coastal plain of Arkansas
… wet weather impacted the soils and affected tree growth. Soil and tree growth data were collected from two natural loblolly pine stands located in the coastal plain of Arkansas that were thinned 4-5 years previously. The Demonstration Area was 1.9 acres in size and 26 years old, with a site index …
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Effect of Minimum Suppression and Maximum Release Years on Compression Parallel to Grain Strength and Specific Gravity for Small-sized Yellow-poplar (Liriodendron tulipifera L.) Specimens
… between specific gravity and ring width or growth rate in yellow-poplar (Liriodendron tulipifera L.). Because most mechanical properties of wood are also closely related to specific gravity, it would thus be of interest to learn how minimum suppression and maximum release years' evidence …
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Using dendrochronology to identify species-specific ice storm damage in Delaware
… that alter forest succession and retard tree growth rates throughout North America. Following a 1994 ice storm in Delaware, the Delaware Forest Service established seventy-five study plots to sample four species of trees (southern red oak [Quercus falcate ], white oak [Quercus alba], loblolly …
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Influence of elevation on tree species distribution and growth in the southern Appalachian Mountains
… of interest for the analysis of forest species growth and composition. Past forest vegetation studies focus on species composition and structure for relatively local scale research areas. Species distribution within this geographic area was compiled from studies published from 1956 to 2006. The …
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Characterization of Alternaria alternata isolates causing brown spot of potatoes in South Africa
… to which different light regimes influence radial growth, sporulation and pathogenicity of this pathogen. The role of low temperatures on initial sporulation was also investigated. Exposure of isolates to low temperatures (4°C) in the dark increased number of spores produced by isolates …
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Growth release of trees following fine-scale canopy disturbances in old-growth forests of coastal British Columbia, Canada
Growth release of trees following canopy disturbances is of interest to ecological scientists and forest managers. Using dendroecological techniques, I examined growth release of canopy and subcanopy trees following the formation of natural, fine-scale canopy gaps in old-growth, western red …
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Variation in the structure, composition, and dynamics of a foundation tree species at multiple scales and gradients
… margin in the Piedmont and Montane Uplands, its radial growth is restricted by minimum temperature especially at longleaf pine's elevational, latitudinal, and longitudinal extremes; at all sties radial growth was influenced by drought and precipitation. At the local scale, I found that an Alabama …
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Tree-ring studies of Chestnut (Castanea sativa) in the Belasitsa Mountain in southern Bulgaria
… it possible to explore the history of the forest growth and the environmental factors that are controlling the growth and development of chestnuts in southern Bulgaria. The Chestnut is crucial for many countries in Central and Southern Europe. It is a multi-functional tree species and through the …
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Evaluating Fungicide Timing for Leaf Spot Diseases of Wheat and Fungicide Resistance in Pyrenophora tritici-repentis
… or product combinations were applied at two growth stages, as single or double applications at five locations in 2013 and 2014 using the wheat cultivar Carberry. The results showed that applying fungicide at anthesis stage provided adequate control of leaf spots compared to applying at flag …
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HIGH-SPEED ROTOR TIP CLEARANCE MEASUREMENTS IN A TRANSONIC COMPRESSOR
… with rising rotor speed due to rotor blade radial growth from centrifugal loading. Too large a tip clearance introduces disruptive air flow that will lower compressor efficiency and lead to stall conditions, whereas too small a tip clearance will increase the risk of blade tip rubbing with …
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