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 33 for “"native grass"”.
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Social and ecological dimensions of non-native grass management in working landscapes
Many grasslands are working landscapes, defined as environments where economic productivity has the potential to coexist with other ecosystem services, including biodiversity. However, biodi-versity in working grasslands is threatened by the dominance of non-native grasses used as cattle forage. …
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Fire and non-native grass invasion across a heterogeneous landscape in the Central Hardwoods
Non-native grass invasions have the potential to change natural and prescribed fire regimes by altering fuels, which in turn may promote further invasion. I examined if invasion by Microstegium vimineum, a non-native annual grass resulted in a positive invasion-fire feedback in eastern deciduous …
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Honey Bee Colony Resource Acquisition, Population Growth, and Pollen Foraging in Diversified Native Grass-Wildflower Grazing System
… is habitat loss and degradation. Agricultural grasslands provide crucial habitat for wild and domesticated fauna, regulate water and nutrient cycles, store carbon, and maintain soil stabilization. However, conventional tall fescue pastures, which dominate the southeastern United States, limit …
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Avian Nesting Densities and Success in Introduced Cool-Season Grass-Legume Plantings Versus Warm-Season Native Grass Planting in South Dakota 2002-2003
… Great Plains. As a result populations of many grassland bird species have declined. The Conservation Reserve Program (CRP) has restored more than 14 million hectares of prairie and idle grassland. Studies indicate that warm-season native grass plantings (WSN) generally provide good winter …
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Directions for best management of Kangaroo grass (Themeda triandra Forssk.) re-establishment in southeastern Australian native grassland remnants
Western basalt plains native grasslands, which extend from the west of Melbourne in Victoria to the South Australian border, are recognised as one of the most threatened ecosystems in Victoria (DC&E 1992). Ecosystem functions and their ability to support life are disappearing along with the remnant …
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Influence of Vegetation On The Distribution of Small Mammals On A Waterfowl Production Area
… of small mammals. Three cover types, reseeded native grassed, brome-alfalfa, and bluegrass, were studied. Meadow voles (Microtus pennsylvanious), and deer mice (Peronyscus maniculatus) were captured most frequently. Jumping ice (Zapus hudsonius), masked shrews (Sorex cinerius), short tailed …
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A Community's Natural Resistance to Invasion by Cheatgrass and the Effects of Associational Herbivory
… associational herbivory, I found that (1) cheatgrass was a highly utilized food source for generalist grasshoppers, (2) among native plant species, the amount of herbivory corresponded with their total percent nitrogen and other plant traits, and (3) a native grass, Elymus elymoides, experienced …
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Penn Park: A Study of Ecological Health in an Urban Environment
… tennis courts, a softball stadium, six acres of native grass meadow, and over 550 trees. This project created corridors that were previously unavailable for people who live and work in the area. Upon completion of the structural engineering, storm water controls and athletic field designs, an …
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Landscape and population ecology of ring-necked pheasants
… ring-necked pheasants on 14 public and private grasslands in east-central Illinois. I monitored 108 nests, 38 broods, and the survival and habitat use of 108 adult female ring-necked pheasants (Phasianus colchicus) throughout the year between May 2014 and August 2016. My goal was to better …
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Drought Resistance and Resilience of Non-native vs. Native Grasses in the Northern Tallgrass Prairie
… Like many other rangelands in the US, the Tallgrass Prairie of eastern South Dakota contains native prairie where the plant composition includes mostly native species as well as pasture that has been converted to or invaded by cool-season introduced species. So how are these two plant …
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Establishing Native Grasses Along Maryland Roadways
The use of native grasses and other meadow species in roadside rights-of-way is perceived as environmentally and economically beneficial. There is a need for more information about successful establishment procedures appropriate for the mid-Atlantic region. This study examined the use of companion …
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Nitrogen, phosphorus and potassium removal from perennial energy grasses when grown on wet marginal land
… and after a killing frost, H2), species (switchgrass, Miscanthus x giganteus, prairie cordgrass, and a native grass mixture), and N-rate (0, 56, and 112 kg N ha-1), on nutrient removal in grass biomass grown on a riparian buffer. Harvest year, harvest timing, species, and N- rate, all …
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Investigating Grassland and Cropland Conversion Decisions in the Dakotas, 2015 Producers Survey and Analysis
<p>This study investigates grassland and cropland conversion decisions in the Dakotas. Data from a 2015 survey completed by 1,026 producers located in 57 counties of the Prairie Pothole Region (PPR) were used to evaluate land conversions. This thesis attempts to identify the land use conversion …
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Development of a research and demonstration facility for the evaluation of stormwater runoff, erosion control, and sediment control best management practices
… plots with different cover practices for a native grass seed mixture were implemented and monitored to evaluate their performance. Preliminary results indicated that the compost and mulch covers led to greater vegetation establishment than either hydromulch treatment. The establishment of …
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Floristics, Conservation, and Restoration of Virginia's Piedmont Grasslands
The native grasslands of Southeastern North America contain higher native plant diver- sity than the prairies of the Great Plains, but they have lost 90-99% of their historic range through disruption of their natural disturbance regimes and conversion to agricultural lands. To inform the …
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Development of prairie cordgrass (spartina pectinata link) as a dedicated bioenergy crop
Development of perennial-grass bioenergy crops relies on investigating the genetic resources, understanding the physiology, and optimizing the agronomic practices related to biomass production. As one of the dominant native grass species (Poaceae), prairie cordgrass (Spartina pectinata Link) showed …
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Development and utilization of molecular tools to understand invasion biology in Centaurea maculosa (spotted knapweed)
… both ploidy (diploid or tetraploid) and origin (native or invasive) influence expression of genes that may be important for plant defense in spotted knapweed populations. I found that spotted knapweed can differentially respond to strong or weak competitors at the level of gene expression by …
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