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.
Results
Showing 1 to 20 of 38 for “"physiographic regions"”.
-
Survey and Comparison of Amphibian Assemblages in Two Physiographic Regions of Northeast Tennessee.
… was to survey two sites located within different physiographic and one herpetofaunal region of Northeast Tennessee, comparing species composition and activity. The first, Henderson Wetland, is in the Appalachian Ridge and Valley physiographic region. The second, John's Bog, is in the Blue Ridge. …
-
Biological Diversity of Natural and Created Wetlands in Three Physiographic Regions of South Dakota
… between natural and created wetlands in three physiographic regions of South Dakota: Prairie Coteau (PC), Missouri Coteau (MC), and Southern Plateau (SP). Wetlands in the PC and MC of the prairie pothole region were sampled in 1995 and 1996. Wetlands in the SP of the Northern Great Plains …
-
Development and Comparison of 17beta-Estradiol Sorption Isotherms for Three Agriculturally Productive Soils From Different Physiographic Regions in Virginia
… to be agriculturally productive from different physiographic regions in Virginia to aid in modeling the concentration of estrogens available for transport in runoff from agricultural fields. Batch equilibrium experiments were conducted with various concentrations of 17beta-estradiol (E2) in a …
-
Vertebrated Richness of Waterfowl Production Areas in the Prairie Pothole Region of Minnesota
… associations among species, communities, and physiographic regions. Study sites were selected by stratified random sampling within 4 physiographic regions in Minnesota: the Prairie Coteau, Sioux Drift Plain - Minnesota River Plain, Agassiz Lake Plain, and Border Prairie. Small mammals, …
-
Estimation and Determination of Carrying Capacity in Loblolly Pine
… The spacing trials, established in the two physiographic regions (Piedmont and Coastal Plain), and at two different scales (operational and miniature) were examined and compared, which provides a sound empirical basis for evaluating potential carrying capacity. Results showed that the stands …
-
Manganese in Virginia soils and correction of manganese deficiency in soybeans (Glycine max L.)
… the Appalachian, Piedmont, and Coastal Plain regions. The exchangeable, easily reducible, and total Mn contents were higher in the Appalachian soils than in the Piedmont or Coastal Plain soils. The total Mn content of the well-drained soil was higher than the poorly-drained soil in the …
-
The use of corn pollen and glass beads to estimate fine particulate organic matter retention
… released into ten streams in three different physiographic regions, Appalachian Mountains, Rocky Mountains, and Central Plains, within the United States. Mean travel distance for corn pollen was 121 m and that for glass beads 40 m. Rates of deposition through the water column for both …
-
Hierarchical Variation in Cellulose Decomposition Across Southern Ontario Reference Streams
… habitats of 22 streams located in three distinct physiographic regions. Partitioning of variation among hierarchical scales associated with rates of decomposition were examined using nested ANOVAs, and comparisons of regional, habitat and seasonal differences were studied using a linear mixed …
-
Estudo comparativo da Hymenopterofauna detritívora de duas unidades fisiográficas da Restinga da Marambaia (Baía de Sepetiba, Rio de Janeiro, RJ)
… most abundant group of this detritivorous on two physiographic regions of Marambaia, Rio de Janeiro, RJ. Because it still maintains a representative portion of Coastal rain forest, the Marambaia island proved to be an excellent place for this study. ln both regions the forest region (PG) and the …
-
Faunal Diversity and Richness of Natural, Restored, Dam-Created, and Borrow-Pit Wetlands in the Prairie Pothole Region of Eastern South Dakota
… in the James River Lowland and Prairie Coteau physiographic regions of eastern South Dakota. Analysis of variance indicated differences among wetland types based on bird richness and diversity. In addition, engineering design criteria and environmental factors of each study wetland were used in …
-
A documentation and analysis of the physical, operating, and business environments for small-tree handling and harvesting
… covering a range of ownership patterns and physiographic regions. Information was obtained pertaining to each system's application; crew organization and background; equipment spread and descriptions; performance; and special considerations provided by landowners or timber buyers. Residual …
-
The effects of rhizosphere inundation on the growth and physiology of red maple (Acer rubrum L.) seedlings derived from wet and dry sites
… from matched wet and dry sites from three physiographic regions of Virginia were flooded to test whether red maple seedlings derived from wet sites are affected differently by flooding than are seedlings derived from dry sites. Thirteen weeks of soil inundation on seedling growth found no …
-
Documentation of Productivity and Efficiency Relationships for a Group of Southern Logging Contractors
… differences between loggers in the three physiographic regions within their respective trucking strategies. Efficiency generally declined as average annual hauling distance increased, however a regression equation explained only 18% of the variation in total economic efficiency.
-
Urban Channel Erosion Quantification in Upland Coastal Zone Streams of Virginia, USA
… with varying levels of urbanization, in two Physiographic Regions (Coastal Plain and Piedmont), and in the Coastal Zone Management Area of Virginia. At each site, riffle cross-sectional and longitudinal surveys were conducted to measure the channel morphology. Enlargement ratios for bankfull …
-
Landsat TM-Based Forest Area Estimation Using Iterative Guided Spectral Class Rejection
… Class Rejection (IGSCR) for portions of three physiographic regions of Virginia. Corrected area estimates were also derived using the Landsat Thematic Mapper-based Multi-Resolution Land Characteristic Interagency Consortium (MRLC) cover maps. Both satellite-based corrected area estimates were …
-
Cost share payment and willingness to participate in Virginia's Pine Bark Beetle Prevention Program
… counties across the Piedmont and Coastal Plain physiographic regions of Virginia, where southern pine is prevalent and SPB hazard is a relevant concern. To measure willingness to participate in the program, a referendum style question was used in which the offered cost share ranged from 20% to …
-
Opportunities for Standardization in Monitoring of Best Management Practices in the Southeastern United States
… form was also developed and tested across three physiographic regions. This information is helpful for future planning and modifications that state agencies can use to standardize their BMP implementation monitoring methods.
-
Protein Indicators, Quality, and Yield of Winter Durum Wheat Grown in Virginia
… lines were assessed from 1993-1998, in three physiographic regions in Virginia. The highest average durum yields were produced in the northern piedmont plateau at the Orange County location. Winter durum yields generally averaged 1600-2800 kg/ha less than soft red winter wheat, traditionally …
-
Potential Effects of Forestry Best Management Practices and Implementation Rates on Soil and Water Resources in the Southeastern United States
… five operational features located within three physiographic regions, including the Mountains, Piedmont, and Coastal Plain, across clearcut harvest sites in the southeastern U.S. First, BMP implementation rates, audit questionnaires, and state guidelines were compared across 13 states in the …
-
Relationships between Forest Productivity and Water Yield Across Virginia's Forests
… between them at differing spatial scales, across physiographic regions, and by forest cover type. Forest cover was delineated using annual National Land Cover Database (NLCD) land cover products. Net primary productivity, or carbon allocated to plant biomass after losses from respiration, was …
Page 1 of 2