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 29 for “""cool-season" vegetation"”.
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Conversion of Exotic Cool-Season Grasslands to Restored Native Plant Communities Utilizing Herbicide Treatments
… Great Plains are now dominated by exotic cool-season grasses such as smooth brome (Bromus inermis), Kentucky bluegrass (Poa pratensis), and reed canarygrass (Phalaris arundinacea). Information was collected to evaluate methods of control for exotic grass species and reestablishment or …
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Phenotypic Plasticity of Native and Invasive Cool-Season Grasses in Response to Frequency of Moisture Availability
… but also the ability to outperform the existing vegetation over time. Bromus inermis (smooth brome) and Poa pratensis (Kentucky bluegrass) are invasive species in tall- and mixed-grass prairie ecosystems. The objectives of this two-part study were to quantify the adaptive plasticity of biomass …
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Evaluation of Mixed-Vegetation Plantings As Avian Nesting Habitat in Eastern South Dakota
Mixtures of legumes and non-native cool-season grasses have long been planted as avian nesting cover on wildlife management units. However in the recent past, there has been a trend toward planting native warm-season grasses. In 2000, South Dakota Game, Fish and Parks (SDGFP) began planting …
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Effects of Ponderosa Pine Ecological Restoration on Forest Soils and Understory Vegetation in Northern Arizona
… coverage and species composition of understory vegetation present in the “cool-season” (late spring and early summer) in a ponderosa pine forest on grazed and ungrazed plots that had undergone restoration treatments on three different soil/geologic parent material types near Flagstaff, Arizona, …
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Effects of Altered Growing Season Precipitation and Management History on Aboveground Biomass Production in Tallgrass and Mixed Grass Prairie of South Dakota
… prairies effects vegetative production for cool season and warm season plants. Ranchers and farmers livelihoods are dependent on adequate annual precipitation and vegetation for cattle production. Historically, in South Dakota drought has occurred in northern mixed grass prairie one out of …
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Denitrification and organic carbon in a series of riparian buffers in the Bear Creek National Demonstration Watershed
… services. Soil quality can vary under different vegetation types in surface and subsurface soils. This study was conducted to determine if denitrification potential and its controlling factors were different under warm season grasses and introduced cool season grasses at different depths. …
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Phenologic Assessment of Western South Dakota Rangelands
… to west across the study area. Alternatively, cool season percentage of total production increased from east to west. Cool season biomass production averaged 76.8% of total which compared favorably to previously reported values for the study area (Tieszen et al. 1997; Foody and Dash 2007). This …
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Root-zone soil temperature: sources of variation and some effects on planted conifer seedlings in high-elevation forest openings in the interior of British Columbia
… seedling growth response to the effects of "cool" versus "warm" root-zone temperatures. A field survey of soil temperature (at a depth of -10 cm from the mineral soil surface) in six high-elevation clearcuts in central British Columbia, as related to microsite attributes, showed that …
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Assessing the costs and benefits of native plant species for electric transmission line right-of-way revegetation within the Tennessee Valley Authority power service area
… necessitates the suppression of tall, woody vegetation on associated rights-of-way (ROWs). Native warm season grasses (NWSG) are more expensive for ROW revegetation compared to typical exotic cool season grasses (ECSG), but they may alter the successional trajectory such that long-term …
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Freshwater snail diversity in relation to Schistosomiasis in the middle Zambezi basin in Lusaka Province
… diversity. The study was carried out during the cool-dry season (July), hot-dry season (October) and hot-wet season (February), from July 2006 to February 2007. Twenty 400 metre transects were established on three rivers, ten streams and one reservoir. Snails were sampled every four metres on …
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Effects of Seasonal Burns on Avian Foraging in a Central Texas Ashe Juniper-Live Oak Savanna
… grassland habitat, typically performed in wet, cool periods when fire behavior is more benign. Fires historically helped to maintain grasslands by suppressing woody plants and encouraging herbaceous growth; however, the majority of these natural fires occurred in the summer growing season. To …
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Relative Invertebrate Availability in Nebraska's Conservation Reserve Management Access Program
… and increasing the structural complexity of vegetation. This study compares invertebrate biomass and structural complexity of vegetation in treated (disked and interseeded with legumes) and idle portions of CRP-MAP fields to determine the success of the program in meeting these goals. The …
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The utilization of Dambos in Chipata: A case of Mwami border area
… Cultivation is mainly done during the dry season although wet season cultivation on dambos is also possible. Livestock grazing and water extraction are also dry season activities but can continue until the early months (November to early December) of the rain season. Grass threshing is the …
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A reconstruction of the mid-to late Pleistocene plant community along the southwestern coast of South Africa using phytolith evidence
… and DFT were identified and tallied to determine vegetation composition during the middle Pleistocene. Distinctions were made between "grassier" and "more woody" samples. Analyses of modern plant samples confirmed that grass species produced abundant phytoliths, whereas the majority of …
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Is Chir Pine Displacing Banj Oak in the Central Himalaya? Socioeconomic Implications for Local People and the Conservation of Oak Forest Biodiversity
… were sampled to compare the diversity of their vegetation and to assess the impact of this ongoing conversion on biodiversity. Soil samples collected from oak and pine forests were analyzed and compared. In addition, dendrochronology was used to obtain age estimates of chir pine and to …
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Forage Potential of Seasonal Wetlands
Investigations on aspects of seasonal wetland forage potential were conducted in eastern South Dakota. The quantity and quality of the standing crop of vegetation in 6 seasonal wetland communities were assessed at the end of the growing season in 1983 and in 2 seasonal-wetland-dominated basins and …
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Ecology and morphology of the Kalahari tent tortoise, Psammobates oculifer, in a semi-arid environment
… and W (west), with apparent differences in vegetation structure. Results of the study were based on data obtained from 27 telemetered tortoises and 161 individuals encountered opportunistically. Female Kalahari tent tortoises were larger than males and the sex ratio did not differ from 1:1. …
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EVALUATION OF LAND, SOIL, WATER, AND VEGETATION-RELATED ECOSYSTEM SERVICES AND TRADEOFFS AT UTILITY-SCALE SOLAR PHOTOVOLTAIC FACILITIES
… services. Co-locating solar photovoltaics with vegetation (sometimes referred to as “agrivoltaics”) could provide a sustainable solution to meet growing food and energy demands while minimizing the land-use impacts of solar energy. Pilot-scale experiments and modeling studies have shown …
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A multi-city analysis of the natural and human drivers of the urban heat island
… the daytime and 2.0 °C at night relative to cool or humid periods. The heat wave results are of particular note due to the added stress on urban residents during periods when the population is already at risk. For cities in temperate climate regimes, differences among cities in vegetative …
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Determining the potential drivers of invasive C4 grasses at De Hoop Nature Reserve, South Africa
… distribution in SA is associated with rainfall seasonality. In grassland the vegetation is exclusively C4 while the shrub and tree component is generally C3. Shrublands, in contrast, are predominantly C3, for both woody and herbaceous species, though there can be a small C4 sedge and grass …
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