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 58 for “"landcover"”.
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Terrain and Landcover Effects of the Southern Appalachian Mountains on the Low-Level Rotational Wind Fields of Supercell Thunderstorms
That tornadoes cannot occur in mountains due to disruptive influences of the complex terrain is a common misperception. Multiple tornadoes occur each year in mountainous environments, including the Appalachian Mountains. Copious research examines the influences of complex terrain on large severe …
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An examination of changes in rainfall, streamflow and landcover a case study of the Kandelaars catchment, Oudtshoorn, South Africa 1926 to 2008
This study seeks to understand changes in rainfall and land-cover in the Kandelaars catchment, which are documented drivers that influence the magnitude, seasonality, and trends in flash-flood occurrence. The study site is situated South-West of the town of Oudtshoorn, which is part of a semi-arid …
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Evaluating Satellite Image Classification For Bottomland Surveys in Ozark National Scenic Riverways
… aerial photographs in a preliminary survey of landcover in Ozark National Scenic Riverways. This thesis evaluated the feasibility of using satellite images in further surveys of the park. Aerial photographs were digitized to allow computerized comparison with satellite images. Landcover regions …
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Modelling Climate Changes, Biogenic Emissions and Tropospheric Chemistry in Southeast Asia.
… change and biogenic emissions response to future landcover changes, both alone and in combination with atmospheric forcing. Consequently, a tropsopheric chemistry model (CiTTyCAT) was used to investigate the relative impact of climate changes and biogenic emissions on tropospheric chemistry, …
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Geology as a Georegional Influence on Quercus Fagaceae Distribution in Denton and Coke Counties of Central and North Central Texas and Choctaw County of Southeastern Oklahoma, Using GIS as an Analytical Tool.
… relationships for the distribution of oak landcover on bedrock and soil orders in two counties in Texas and one in Oklahoma. ESRI's ArcGis and ArcMap was used to create surface maps for Denton and Coke Counties, Texas and Choctaw County, Oklahoma. Attribute tables generated in GIS were …
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In-Stream Reactivity of Dissolved Organic Matter and Nutrients in Proglacial Watersheds
… meltwater contributions associated with glacial landcover along the coast of southeast Alaska were examined to better understand in-stream processing of dissolved organic matter (DOM) and nutrients during downstream transport. Specifically, this study paired glacial streams with nearby …
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Bionomics of Ochlerotatus triseriatus Say (Diptera: Culicidae) and Aedes albopictus Skuse (Diptera: Culicidae) in emerging La Crosse virus foci in Virginia
… human case site in 2000. In a separate study, a landcover map of Wise County was created by supervised classification of Landsat Enhanced Thematic Mapper imagery, and maps indicating posterior probabilities of high mosquito abundance were created by combining ovitrap survey-derived, …
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Analysis of microtopography, vegetation, and active-layer thickness using terrestrial LIDAR and kite photography, Barrow, AK
… subtle changes related to microtopography and landcover. In 2010, terrestrial LIDAR was used to collect high-resolution elevation data for four 10 m × 10 m plots where maximum active-layer thickness (ALT) and elevation have been monitored on an annual basis since the mid-1990s and had been …
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Analysis of microtopography, vegetation, and active-layer thickness using terrestrial LIDAR and kite photography, Barrow, AK
… subtle changes related to microtopography and landcover. In 2010, terrestrial LIDAR was used to collect high-resolution elevation data for four 10 m × 10 m plots where maximum active-layer thickness (ALT) and elevation have been monitored on an annual basis since the mid-1990s and had been …
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ECOLOGY AND MANAGEMENT OF WHITE-TAILED DEER IN AN AGRICULTURAL LANDSCAPE: ANALYSES OF HUNTER EFFICIENCY, SURVEY METHODS, AND ECOLOGY
… Males were never observed in developed landcover. Sex differences in the use of developed landcover approached significance with females using sites with that landcover 131% more than males; they also used sites with 87% higher patch density of wetland landcover than males. Based on the …
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Linking Environmental Factors To Vector Abundance And Malaria Incidence: A Multi-Model Investigation Of Disease Ecology.
… that microenvironmental conditions such as landcover type (grassland and cropland) and housing characteristics such as whether there were holes in the wall, were significant predictors of malaria infection risk. Manuscript 2 provided one of the first national-scale analyses of Anopheles …
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A Data Fusion Framework for Floodplain Analysis using GIS and Remotely Sensed Data
… on DEM and hydrological data (aFPM). Landuse/landcover was also examined to determine its influence on rFPM errors. These errors were identified and the results were integrated in a GIS to minimize landuse / landcover effects. Two substantial flood events were analyzed. These events were …
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Investigating the Valley Fever – Environment Relationship in the Western U.S.
… new insights on relationships between climate, landcover, and valley fever disease risk. Significant findings include climate variables explaining up to 76% of valley fever variability in Kern County, California, the significance of both climatic and landcover variables in characterizing the …
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Use of geographic information systems and infrared-triggered cameras to assess white-tailed deer (Odocoileus virginianus) habitat in Denton County, Texas.
… research the following metrics: geology, soils, landcover, landscape ecology, streams, shorelines, land use, population, roads, structures, and census methods.
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Integrated Modeling of Long-Term Vegetation and Hydrologic Dynamics in Rocky Mountain Watersheds
… SIMPPLLE vegetation simulator are converted into landcover maps at every time-step and used to predict hydrologic watershed responses to time-series landcover change with the SWAT model. Long-term watershed responses to vegetation management scenarios can therefore be evaluated from both …
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Integrated Modeling of Long-Term Vegetation and Hydrologic Dynamics in Rocky Mountain Watersheds
… SIMPPLLE vegetation simulator are converted into landcover maps at every time-step and used to predict hydrologic watershed responses to time-series landcover change with the SWAT model. Long-term watershed responses to vegetation management scenarios can therefore be evaluated from both …
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GIS procedures for analyzing wildlife topics in a national park in Virginia
… data on elevation, slope, soils, landuse/landcover, roads, and hydrography. The procedures are built upon standard GIS techniques (e.g., overlays and “buffer” zones) and should be applicable to the mapping of habitat, species richness, and other information for various taxa in other …
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Changes in Avian Capture Rate and Migration Phenology Across 37 Years at a Coastal Barrier Island in Georgia
… Western Palm Warbler have shifted 8 days later. Landcover analysis of the island yielded non-significant results; therefore, human-caused habitat change on breeding and wintering grounds are likely the primary drivers of lowered capture rates. Rising temperatures on breeding grounds are extending …
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The Effects of Anthropogenic Warming on Changes of Extreme Precipitation Over Kansas City Metropolitan Area
… damage. These initial simulations used different landcover inputs to represent present-day, i.e., control, and historic land use as the other initial simulation. Then a suite of sensitivity experiments was designed and performed for both initial simulations to investigate potential changes to the …
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