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Effects Of Canopy And Cultural Treatments On Fine Fuel Production, Fire Behavior, And Short-Term Fire Effects In Loblolly Pine (>I/I< L.) Stands Being Restored To Longleaf Pine (>I/I< Mill.), Carsyn Tennant
All Theses
Across the southeastern United States, anthropogenic factors such as land conversion and fire suppression have resulted in the prevalence of loblolly pine in areas historically occupied by longleaf pine. Compared to longleaf pine forests, loblolly stands often contain a substantial broad-leaved midstory and lack the ground layer that contributes fuels essential for the frequent, low intensity surface fire regime necessary to sustain the longleaf ecosystem. Currently, there is considerable interest in restoring longleaf pine habitats to areas occupied by loblolly pine. The retention of mature canopy trees is often necessary to maintain ecosystem function, to preserve habitat features, and to …
Composition And Ecophysiological Proficiency Of Tidal Freshwater Forested Wetlands: Investigating Basin, Landscape, And Microtopographic Scales, Jamie Duberstein
Composition And Ecophysiological Proficiency Of Tidal Freshwater Forested Wetlands: Investigating Basin, Landscape, And Microtopographic Scales, Jamie Duberstein
All Dissertations
A hierarchical approach to forest community assessment was conducted by first focusing on landscape associations to edaphic factors among major tidal freshwater forested wetland basins in the Southeast. Four general tree communities exist along coastal rivers in the southeastern United States, based on the most prominent species in each: Water Tupelo, Swamp Tupelo, Dwarf Palmetto, and Cabbage Palm. Microhabitat usage and preference by trees were then examined, both across all species and within species, as related to such factors as coast, presence on rivers with dams, tree community assemblage, relative distance from the river, specific river basin, and microsite availability. …
Role Of Belowground Fungal Mutualisms And Nutrient Cycling Alteration In Invasion Success Of Polygonum Cuspidatum Sieb. & Zucc. (Polygonaceae) In The Eastern United States, Gretchen Addington
Role Of Belowground Fungal Mutualisms And Nutrient Cycling Alteration In Invasion Success Of Polygonum Cuspidatum Sieb. & Zucc. (Polygonaceae) In The Eastern United States, Gretchen Addington
All Theses
Plant species invasion is problematic around the world due to its negative effects on native plant biodiversity, ecosystem function, and ecosystem stability. Understanding the mechanisms of plant species invasion is necessary to predict new invasions and to control current problematic species. Polygonum cuspidatum Sieb. & Zucc. (Polygonaceae, Japanese Knotweed) is an invasive species found in 40 of the 50 United States and listed as a noxious species in nine states. It is known to exclude native plant communities, and its eradication is nearly impossible. The extensive negative effects associated with this species make understanding its mechanism of invasion a prerogative. …
An Ecological, Genetic, And Reproductive Study Of Big Bluestem (Andropogon Gerardii) Populations In The Carolinas, Robert Tompkins
An Ecological, Genetic, And Reproductive Study Of Big Bluestem (Andropogon Gerardii) Populations In The Carolinas, Robert Tompkins
All Dissertations
ABSTRACT
AN ECOLOGICAL, GENETIC, AND REPRODUCTIVE STUDY OF BIG BLUESTEM (ANDROPOGON GERARDII) POPULATIONS IN THE CAROLINAS
Andropogon gerardii (Big Bluestem) is a dominant grass of the North American tallgrass prairie and is also found in remnant populations in the eastern U.S., including North and South Carolina. This research included a systematic study of the ecology, genetics, and reproductive potential within and among A. gerardii populations in the Carolinas. Floristic composition and edaphic (soil) features were characterized for eight A. gerardii populations across various physiographic regions of North and South Carolina. A total of 362 quadrats (1 m x 1 m) …