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 19 of 19 for “"wetland ecosystem"”.
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Spatial population dynamics of western painted turtles in a wetland ecosystem in northwestern Montana
… picta bellii) across space and time in a wetland ecosystem in northwestern Montana. All wetlands within five complexes were sampled during three primary sessions a year from fall 2002 to spring 2005. I captured 1,072 individual adults 5,050 times and 442 individual juveniles 3,078 times. …
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Spatial population dynamics of western painted turtles in a wetland ecosystem in northwestern Montana
… picta bellii) across space and time in a wetland ecosystem in northwestern Montana. All wetlands within five complexes were sampled during three primary sessions a year from fall 2002 to spring 2005. I captured 1,072 individual adults 5,050 times and 442 individual juveniles 3,078 times. …
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Population genetics of wood frogs (Lithobates sylvaticus) in a forested ridge-top wetland ecosystem
… land-use changes impact biodiversity. Ridge-top wetlands are unique habitat for pond-breeding amphibians and the Daniel Boone National Forest (DBNF) contains natural forested ridge-top wetlands in close proximity to constructed wetlands intermixed across the same landscape. Genetic data can be …
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Dynamics of cicrobial communities associated with <i>Typha angustifolia</i> (cattail) litter in a wetland ecosystem: Effects of litter manipulations on microbial decay processes
… energy flow and nutrient recycling in wetlands. Prior studies examining emergent plant decomposition have often used litter that had been prematurely harvested (senescent) and/or manipulated (oven-dried). I examined the effects of litter manipulations on microbial decay dynamics …
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Providing Connections: A Wetland Boardwalk
… plans to add a boardwalk route through the wetland site adjacent to their building to provide an outdoor learning area for wetland education. This report is the culmination of my on-site inventory, research, process and design proposal for this boardwalk route that combine to fulfill my …
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An assessment of the impacts of land use changes on the Duthuni wetland stream using remote sensing, GIS and social surveying: a case study in Limpopo Province, South Africa
… the impacts of land use changes on the Duthuni wetland ecosystem in Limpopo Province using geospatial techniques and Social Survey. SPOT 4 satellite images which covered the time frame between 1999, 2005 to 2012, were used. The unit of analysis included different institutions such as the local …
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Accounting for Wetlands in Biocapacity: Data Integration, Sensitivity Analysis, and Implications
Wetlands play a critical role in climate regulation and ecosystem services provision. However, their transitional nature and variable hydrology complicate precise definition and consistent assessment across the globe, leading to data gaps and limited representation in environmental accounting …
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Playground for the Imagination
… interdependence humans have with the wetland ecosystem. As I examine the shapes of trees and their roots through rubbings, paintings, and sculpture, I sought to express this interaction between humans and nature. My artwork metamorphosed from the traditionally separated forms of …
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Harvesting effects on the hydrology of wet pine flats
… of the most productive and intensively-managed wetland forests in the eastern United States. Wet-weather logging of these sites causes extensive rutting and churning of the soil surface and may alter the subsurface flow of soil water. An operational-scale experiment was established in …
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The distribution and diversity of an entire assemblage of Plecoptera (stoneflies) inhabiting Indiana, USA
… soil hydrologic group C/D, and percent historic wetland ecosystem. Hierarchical Partitioning indicated topographic wetness index, HUC8 area, and percent cherty red clay surface geology as significantly important to predicting species richness.
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Drivers and Impacts of Smoldering Peat Fires in the Great Dismal Swamp
Peatlands are a diverse type of wetland ecosystem, characterized by high levels of soil organic matter, that provide a wide array of ecosystem services including water storage and filtration, carbon sequestration, and unique habitats. Draining peatlands degrades their resilience to future …
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The effects of warming on carbon and microbial community wetland dynamics at Turnbull National Wildlife Refuge, Washington
<p>Wetlands are biodiverse ecosystems that play a key role in the biogeochemical cycling of carbon. In the face of global warming, wetland hydroperiods could shift causing changes in their functionality. My field experiment surveyed 3 plots within 12 wetlands of each hydroperiod class (i.e. 12 …
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The Influence of Hydrogeomorphology, Soil Redox Conditions, and Salinity on the Spatial Zoning of Saltgrass, Salt Rush, and Cattails in Scotts Creek Marsh, Swanton Pacific Ranch, CA
<p>Scotts Creek Marsh (SCM) is a small coastal wetland ecosystem in Davenport, CA. The vegetation of SCM is dominated by three halophytic zones comprised of saltgrass, salt rush, cattails. The objectives of the study were (i) to investigate the variables that influence the zoning of the three …
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Periphyton-nutrient dynamics in a gradient-dominated freshwater marsh ecosystem.
… of a nutrient availability gradient in a wetland ecosystem and the subsequent controls to, and feedbacks from, the structure and function of the periphyton community were investigated. Field surveys, field experiments, and a laboratory experiments were conducted over a three year period in …
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Validation Of Kentucky Wetlands Rapid Assessment Method (ky-Wram) Metrics Using Macroinvertebrate Communities Of Forested Depressional Wetlands
<p>The Kentucky Wetlands Rapid Assessment Method (KY-WRAM) is currently being developed by the collaborative efforts of the Kentucky Division of Water and Eastern Kentucky University as a tool to measure the function and condition of wetlands. To ensure the rapid assessment method properly …
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A nested environmental approach to typhoid epidemiology in Central Division, Fiji
… review examining health consequences of wetland ecosystem service interruption associated with common natural disasters; (2) use quantitative geospatial analysis to evaluate relationships between sub-catchment environmental characteristics and typhoid incidence and recurrence; (3) use a …
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Earth Observatory-based Assessment of Spatial and Temporal trends in Inundation Extent in the Barotse Wetland,Western Zambia
… activities in the upper catchment of the Barotse Wetland could alter the inundation extent dynamics and impact the flood dependent ecosystem. There is very little information available in public domain on inundation extent dynamics of the wetland. This study investigated trends in inundation …
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Earth Observatory-based Assessment of Spatial and Temporal trends in Inundation Extent in the Barotse Wetland,Western Zambia
… activities in the upper catchment of the Barotse Wetland could alter the inundation extent dynamics and impact the flood dependent ecosystem. There is very little information available in public domain on inundation extent dynamics of the wetland. This study investigated trends in inundation …
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Influence of fire and habitat on the removal of invasive plant seeds by granivores in longleaf pine savannas
Invasions of fire-dependent ecosystems by exotic woody plant species can disrupt fire cycles and alter successional trajectories. Prescribed fire is an important tool for managing such ecosystems, yet the role of top-down processes in mediating fire effects on invasion remain poorly understood. …