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 64 for “"Fire regime"”.
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Burning questions: a geospatial analysis of fire regime change in Côte d’Ivoire, 1984-2014
This Thesis was approved for publication on 2015-04-30 at 13:24.
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Fire regime change and the boreal forest carbon cycle from 10,000 years ago to 2100 AD
… role in the global carbon cycle, and wildfire is a key control of boreal carbon dynamics. Rapid high latitude climate change will likely alter boreal fire regimes, potentially disrupting the historical role of the biome as a major sink for anthropogenic carbon emissions. However, the …
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Drivers of spatial and temporal variability in the fire regime of boreal forest in western Russia
Fire is an integral and major control on forest properties and ecosystem functions within the boreal forest. However, significant spatial and temporal variability in fire regimes occurs across this area that may not current be being encompassed in models and predictions of its future, particularly …
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Spatiotemporal dynamics of carbon cycling and thermokarst in response to climate and fire-regime changes in the Arctic tundra biome
Amplified climate change and fire regime shifts in the northern high latitudes are posing growing threat to key properties and functions of tundra ecosystems, including soil carbon stock, permafrost stability and vegetation types. However, it remains poorly understood how tundra ecosystems will …
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A CENTURY OF CHANGE IN FOREST STRUCTURE AND FIRE REGIME CONDITION CLASS IN A WESTERN MONTANA PONDEROSA PINE DOUGLAS-FIR FOREST
… A Century of Change in Forest Structure and Fire Regime Condition Class in a Western Montana Ponderosa Pine/Douglas-fir Forest - Restoring historical forest conditions is often a driving force behind forest management activities today. However, determining historical, pre-settlement …
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A CENTURY OF CHANGE IN FOREST STRUCTURE AND FIRE REGIME CONDITION CLASS IN A WESTERN MONTANA PONDEROSA PINE DOUGLAS-FIR FOREST
… A Century of Change in Forest Structure and Fire Regime Condition Class in a Western Montana Ponderosa Pine/Douglas-fir Forest - Restoring historical forest conditions is often a driving force behind forest management activities today. However, determining historical, pre-settlement …
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Managing disturbance in the longleaf pine ecosystem: effects of managed fire regime characteristics on fire hazard and community ecology at multiple spatial scales
… ecosystem is adapted to frequent, low-intensity fire, however, naturally occurring fire no longer burns with sufficient frequency to maintain the ecological structure and function necessary to sustain high levels of biological diversity. To compensate, aggressive prescribed fire programs are …
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Responses of boreal fire regimes to climatic and land-cover changes: perspectives from multiple spatiotemporal scales
… boreal forest over the past several decades, and fires are expected to increase in frequency and size as a result of anthropogenic climate change in the 21st century. Because wildfires have an important regulatory role in maintaining boreal forests, fire-regime shifts can have large ecological and …
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Burning for birds : the response of bird communities to recent fire history in the Serengeti ecosystem
Fire is a ubiquitous ecosystem process with important implications for savanna ecology and conservation. In this study we aimed to explore the short-term and long-term effects of recent fire history on bird communities in the greater Serengeti savanna ecosystem in Tanzania. The study investigated …
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Drivers of burn severity in the northern Cascade Range, Washington, USA
… on the occurrence, size, severity, and within-fire severity pattern of fires in the northern Cascade Range of Washington, USA. Landsat Thematic Mapper (LTM) data were used to quantify fire severity for all fires greater than 10 ha (n = 125) that occurred during a 25-year period (1984-2008). …
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Human Impacts on Fire in De Soto National Forest, Mississippi, U.S.A.
<p>Fire is a common occurrence in the longleaf pine (<em>Pinus palustris</em>) forests of the Southeast United States. Prescribed fire is used to manage these threatened ecosystems, but information regarding historical fire activity is unknown. My goals were to determine the historical fire regimes …
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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
… stark regional trends of increasing burned area, fire frequency and burn severity. As a result of fire suppression-mediated fuel accumulation and accelerating climatic changes, this trend of an intensifying fire regime is evident in the temperate mixed-conifer forests of the Sierra Nevada region …
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Palaeoecology and vegetation dynamics in the Cederberg wilderness area
… and agriculture during the 1800s to 1940. Fire-sensitive taxa have not declined, apart from possibly Ericaceae, suggesting that changes in fire have not exceeded a threshold that affects the community at a family level. Changes in the fire regime, combined with disturbance by ploughing and …
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Ecology of the bald ibis Geronticus Calvus and fire in the South African grassland biome
… Gerontiaus aalvus (Aves: Threskiornithinae) and fire in the South African grassland biome. The use of habitat by foraging bald tbises, and the reproductive performance of bald ibises during three consecutive breeding seasons (1978-80) at a single breeding colony in western Natal, South Africa, …
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Building a better burn: Fuel characterization and fire effects in silvicultural systems in the southern United States
Landscape-scale fire suppression and poor timber harvesting practices with little regard for post-harvest conditions have contributed to a decline in xerophytic pine (Pinus spp.) and oak (Quercus spp.) forests in the eastern United States and in the Appalachian Mountain region. The success of …
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Root suckering in Dichrostachys cinerea and a comparison of subspecies africana and nyassana
… and the extent of root suckering under different fire regimes, and levels of herbivory. Variations in subspecies distribution are clear. Subspecies africana, with greater structural defenses, survives in areas of high herbivory but is rarely seen under high fire disturbance. The opposite is true …
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Effects of fire frequency and seasonality on the population dynamics of the critically endangered Clanwilliam cedar
… is a threatened conifer endemic to the fire-adapted fynbos vegetation of the Cederberg mountains, South Africa. Here its population size has drastically declined, and its conservation status subsequently escalated to critically endangered in 2013 by IUCN Red List of Plants. Studies have …
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Firestorms in a mesic savanna-forest mosaic
… are maintained by positive feedback loops with fires, promoting fires in savannas and excluding fires in forests. Occasional extreme fires do however burn into forest edges and cause extensive mortality. So, while our understanding of bistability in these systems has advanced, our understanding …
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Wildfires for resilience in California’s Sierra Nevada: fine-scale assessment at regional scales with airborne lidar
… to a warming climate and increasingly severe wildfires, droughts, and bark beetle outbreaks. In dry forest types, a history of fire exclusion, removal of Indigenous burning, and extensive logging have drastically altered forest structures and compositions over the past century, making the impacts …
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