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 21 for “"restoration treatments"”.
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Lessons learned from urban river restoration projects: application of restoration treatments on the Los Angeles River.
… condemned as flood hazards, and load-reducing treatments were the only treatments applied to protect the surrounding communities against flooding. These treatments aim to collect precipitation from the surrounding surfaces quickly and divert the water using the most direct and spatially …
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The Fungal Connection: Characterizing the Ectomycorrhizal Community and Belowground Response to Restoration Treatments in Northern Mississippi.
… making them important considerations in restoration projects seeking to restore target tree species. Restoration strategies such as burning and thinning may have strong impacts on ECM fungi, and given the that ECM are important in structuring aboveground communities and maintaining …
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Assessing Efficacy of Restoration Treatments in Juniper Savannas using Spatial Wavelets and Dot Grids on Aerial Photography
… Clifton Ranger District, landscape-scale restoration treatments have been used to stall this expansion and reduce canopy-cover. This study utilizes and compares two techniques – dot- grid sampling and spatial wavelet analysis (SWA) – to estimate the efficacy of these treatments by …
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Assessing Efficacy of Restoration Treatments in Juniper Savannas using Spatial Wavelets and Dot Grids on Aerial Photography
… Clifton Ranger District, landscape-scale restoration treatments have been used to stall this expansion and reduce canopy-cover. This study utilizes and compares two techniques – dot- grid sampling and spatial wavelet analysis (SWA) – to estimate the efficacy of these treatments by …
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How do ecological restoration treatments affect understory plant communities in dry conifer forests of the Colorado Front Range?
Ecological restoration efforts are progressing in dry conifer forests across the western United States to increase resilience to fire and other disturbances. While such treatments primarily aim to create overstory change, impacts beyond the canopy should also be considered – such as effects on …
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Effects of Ponderosa Pine Ecological Restoration on Forest Soils and Understory Vegetation in Northern Arizona
… on grazed and ungrazed plots that had undergone restoration treatments on three different soil/geologic parent material types near Flagstaff, Arizona, twelve years after tree thinning and grazing exclosure treatments were applied. Several measured soil properties, such as soil respiration and …
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SOIL QUALITY INDICATORS AND VEGETATION RESPONSES FOLLOWING ECOLOGICAL RESTORATION THINNING OF PONDEROSA PINE ON THREE SOIL PARENT MATERIAL TYPES UNDER GRAZING AND NON-GRAZING IN NORTHERN ARIZONA
… of long-term vegetation responses to ecological restoration treatments on three soils types, with and without grazing, b) evaluate the responses soil physical, chemical, and biological properties to restoration treatments, with and without grazing, c) determine the utility of measured soil …
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Heterogeneity of Stand Structure, Fuels, and Wildfire Hazard in Dry and Moist Old-Growth Ponderosa Pine Forests: Case Studies from Western Montana
Silvicultural restoration treatments are increasingly proposed to restore ecological function and remediate catastrophic wildfire hazards in old-growth ponderosa pine stands throughout the western United States. However, stand heterogeneity has been inadequately addressed in restoration and fuel …
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Heterogeneity of Stand Structure, Fuels, and Wildfire Hazard in Dry and Moist Old-Growth Ponderosa Pine Forests: Case Studies from Western Montana
Silvicultural restoration treatments are increasingly proposed to restore ecological function and remediate catastrophic wildfire hazards in old-growth ponderosa pine stands throughout the western United States. However, stand heterogeneity has been inadequately addressed in restoration and fuel …
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LONG-TERM OVERSTORY VEGETATION RESPONSES TO PRESCRIBED FIRE MANAGEMENT FOR LONGLEAF PINE AT BIG THICKET NATIONAL PRESERVE
… communities from a variety of prescribed fire treatments and controls. The vegetation data was separated by size class to include overstory, small tree, sapling, and seedling data. Across the size classes and treatments, the sandhill and wetland savanna vegetation types remained less effected …
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The Effects of Ecological Restoration on Soil Microbial Enzyme Activities and Leaf Litter Decomposition
… examined the immediate effects of ecological restoration on soil enzyme activities and decomposition. The activities of five enzymes: phosphatase, ?-glucosidase, ?-N-acetylglucosadminidase (NAGase), phenol oxidase, and lignin-peroxidase were measured in both soils and on decomposing Quercus …
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The response of grassland carbon cycling to drought events and changes in nutrient availability
… experiments, with varying long-term grassland restoration treatments and short-term nutrient addition, and a glasshouse experiment with reduced soil moisture. It was hypothesised that changes in plant and soil microbial communities, brought about by differences in nutrient availability, would …
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Belowground success: Collembola as indicators of restoration progress following active and passive restoration
… by human land uses and exploitation, ecological restoration is an increasingly essential topic in the field of conservation. In South Africa, a predominantly semi-arid country, invasive tree species negatively impact the limited water resources by reducing runoff and disrupting water related …
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Plant-Soil Feedbacks In Heavy Metal Soils
… to affect many processes critical to successful restoration, but we know little about their generality across ecosystems or how metal contamination will affect them. I conducted a series of experiments to investigate different mechanisms of PSF I predicted to be central to plant succession and …
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Free living nitrogen-fixation in ponderosa pine/Douglas-fir forests in western Montana
… The influence of fire, fire exclusion and forest restoration treatments on non-symbiotic N-fixation in the forest ecosystem has been poorly studied. Over the past 100 years, fire has been greatly excluded from low elevation, fire maintained forests as a result of active fire suppression as well as …
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Free living nitrogen-fixation in ponderosa pine/Douglas-fir forests in western Montana
… The influence of fire, fire exclusion and forest restoration treatments on non-symbiotic N-fixation in the forest ecosystem has been poorly studied. Over the past 100 years, fire has been greatly excluded from low elevation, fire maintained forests as a result of active fire suppression as well as …
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Evaluating the Long-Term Morphological Response of a Headwater Stream to Three Restoration Techniques
The stream restoration industry has been growing since the addition and modification of Section 404 to the Clean Water Act. Many projects follow the guidelines of Natural Channel Design and use in-stream structures to stabilize stream channels. Post-project monitoring rarely exceeds 3-5 years, and …
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The effects of replanting and restoration of riparian buffers on arthropods in oil palm systems
… far from riparian buffers undergoing different restoration management, in order to investigate the effects of replanting and restoration of riparian buffers on arthropod biodiversity. This thesis has four data chapters: Chapter 2: By surveying arthropods across an oil palm chronosequence that …
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THE FEASIBILITY OF CHAPARRAL RESTORATION ON TYPE-CONVERTED SLOPES
… shrub establishment, presenting challenges in restoration. This study examined the feasibility of chaparral restoration in a Mediterranean-type climate, on a type-converted landscape in San Timoteo Canyon, Riverside County, California. The objectives of this study were to (1) compare the …
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