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 32 for “"vegetation recovery"”.
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Evaluating Post-fire Vegetation Recovery in Canadian Mixed Prairie Using Remote Sensing Approaches
… at Grasslands National Park, aiming to quantify vegetation's post-fire recovery with both field and remote sensing approaches. Biophysical parameters and hyperspectral reflectances were collected through field surveys conducted one year prior to the fire as well as five continuous years post-fire …
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An investigation of riparian vegetation recovery following invasive alien tree clearing in the Western Cape
… alien plants with an assumption that indigenous vegetation will recover naturally. Current management objectives are to reduce above ground biomass of invasive alien plants by labour intensive means, after which indigenous vegetation is usually left to recover without further intervention. …
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Restoration of Burns Bog : cumulative moisture deficit as an indicator of vegetation recovery and peat growth
… shapes the character and distribution of vegetation and Sphagnum growth. This study investigated measures of hydrology, including water table residence times and cumulative moisture deficits, to quantify intuitive relationships between moisture stress and ecological zones. Regression …
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Soil and vegetation recovery on abandoned paved roads in a humid tropical rain forest, Puerto Rico
I examined soil and vegetation characteristics on a 60 yr chronosequence of abandoned paved roads in Puerto Rico. Rapid recovery obscured successional changes in soil regeneration. Littermass, bulk density, soil moisture, soil organic matter, and total Kjeldahl nitrogen reached forest levels within …
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Evaluating blanket mire vegetation recovery following hydrological restoration, with specific focus on the influence of Molinia caerulea
… processes involved in passive blanket peatland vegetation restoration following hydrological rewetting and evaluates the role of Molinia caerulea tussock development as a barrier to blanket mire vegetation establishment. Using data collected from restoration pools and terrestrial peat surfaces …
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Megafires in the temperate conifer forests of the Sierra Nevada mountains of California from 1985 to 2020: remote sensing and field-based analysis of fire characteristics and vegetation recovery dynamics
… as a discussion on assessing burn severity and vegetation recovery after disturbance is provided in \textbf{Chapter 1}. \textbf{Chapter 2} examines the occurrence and effects of fires of extreme size in the Sierra Nevada ecoregion over the last four decades. We find that megafires drive annual …
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Leveraging the Landsat archive to characterize plant species diversity and post-fire recovery in Great Basin shrublands
… by increased wildfire activity. Post-fire vegetation recovery trajectories vary spatially and temporally and are influenced by the effects of topography, climate, soils, and pre-fire vegetation. Our study leverages spatially continuous Landsat data alongside spatial models of environmental …
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The impact of wildfire on avian communities: exploring habitat associations two decades after fire
… to address how avian species are responding to vegetation recovery and wildfire-driven conversion multiple decades after wildfire in ponderosa pine ecosystems of the southwestern United States. Understanding how community dynamics differ between low- and high-severity portions of burned …
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Assessing the condition of the Flow Country peatlands to support their future protection: Monitoring blanket bog functioning during drought and mapping post-wildfire recovery
… and Sphagnum mosses.<br/>An exhaustive optimal vegetation index combination method based on ground-based spectral signatures showed that seasonally changing edaphic and phenospectral conditions can decrease classification accuracies between blanket bog cover types, such as Sphagnum spp. and …
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Improving Erosion Resistance and Revegetation of Wildfire-Altered Soils Using Microbial Induced Calcite Precipitation
… resistance and plants capacity to support vegetation. Soil samples were collected and burned to simulate wildfire conditions. The soil was mainly sandy, with a small percentage of fines and an organic content of 5-7%. Test results showed that the burned soils had decreased shear strength …
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Post-Wildfire Vegetation Response on Diverse Rangelands in Northeast California: Does Livestock Grazing Management Matter?
… not consider biophysical factors that influence vegetation recovery after fire. We examined responses of Bromus tectorum, annual graminoids, perennial graminoids, and species diversity to grazing management strategies (rested from livestock grazing one or two growing seasons after fire vs. …
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Oceanic storm surges in the outer Mackenzie Delta, NWT Canada: Remote Sensing of tundra disturbance and restoration from saline intrusion
… of freshwater tundra. Over a decade later, dead vegetation remains the dominant land cover for more than one quarter of the impacted region. Dynamic retrospective studies such as the one conducted here are important tools for properly monitoring current processes and forecasting future impacts …
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FIVE YEARS AFTER THE OCTOBER 8, 2005 KASHMIR EARTHQUAKE: ASSESSING POST-SEISMIC LANDSLIDING PROCESSES BETWEEN 2005 AND 2010
… and shape; 44% showed noticeable or complete vegetation recovery; and 10.5% noticeably increased in area, change in shape and can be considered active. Many of the new or reactivated failures occurred along roads and rivers, particularly along steeper slopes. This study contradicts the view in …
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FIVE YEARS AFTER THE OCTOBER 8, 2005 KASHMIR EARTHQUAKE: ASSESSING POST-SEISMIC LANDSLIDING PROCESSES BETWEEN 2005 AND 2010
… and shape; 44% showed noticeable or complete vegetation recovery; and 10.5% noticeably increased in area, change in shape and can be considered active. Many of the new or reactivated failures occurred along roads and rivers, particularly along steeper slopes. This study contradicts the view in …
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USING LANDSAT IMAGERY TO EVALUATE LANDSCAPE-LEVEL IMPACTS OF NATURAL GAS FIELD DEVELOPMENT: TAZOVSKY PENNINSULA, RUSSIA, 1984-2007
… that have been consistently developed show a vegetation recovery response evidenced by positive changes in NDVI values when compared to undisturbed areas. Cross-tabulation of the changes in NDVI values between analysis dates indicate that these changes can be attributed to the conversion of …
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USING LANDSAT IMAGERY TO EVALUATE LANDSCAPE-LEVEL IMPACTS OF NATURAL GAS FIELD DEVELOPMENT: TAZOVSKY PENNINSULA, RUSSIA, 1984-2007
… that have been consistently developed show a vegetation recovery response evidenced by positive changes in NDVI values when compared to undisturbed areas. Cross-tabulation of the changes in NDVI values between analysis dates indicate that these changes can be attributed to the conversion of …
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The effect of altered rainfall seasonality on post-fire recovery of Fynbos and Renosterveld shrublands in the Cape Floristic Region
… of the heightened sensitivity of post-fire vegetation to environmental conditions. In this thesis, I focused on investigating the relationships between rainfall seasonality patterns and post-fire vegetation processes in neighbouring Fynbos and Renosterveld shrubland communities within the …
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Evaluating post-fire woody mulch effects on soil and stream nitrogen
… applied to mitigate soil erosion and enhance revegetation post-fire, but it also provides a source of labile carbon (C) that may stimulate microbial immobilization and limit N release from soils. The objective of our study was to evaluate whether mulch application influenced turnover and loss of …
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Biological control affects native vegetation and recovery potential in Theodore Roosevelt National Park, North Dakota
This study evaluated native vegetation recovery in areas infested with leafy spurge (Euphorbia esula L.) and treated with the bio-control agent Aphthona spp. and examined in-situ seed bank potential to predict recovery of native species. Extant vegetation and seed bank species richness, diversity, …
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