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 875 for “"wetlands"”.
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Forage Potential of Seasonal Wetlands
… and IVDDM analyses. Season-long comparisons of wetlands and uplands show that, on an area basis, seasonal-wetland-dominated basins produce higher standing crops of forage than uplands in a native mixed-grass prairie situation. The large late-season standing crop estimates (679 to 1146 g·m‾²) in …
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Interpretive Potential of South Dakota Wetlands
… to devise a method for selecting prairie wetlands on which nature interpretation areas could be established. An evaluation form was designed to systematically identify areas of good potential and 64 prairie wetlands were evaluated. Twenty-two percent of the evaluated marshes were found to …
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Floating treatment wetlands for synthetic greywaterremediation
… introduce, what isknown as, floating treatment wetlands (FTWs) for improving the removal efficiency of soluble contaminations from synthetic greywater (SGW) in such systems. As a corroboration to the phytoremediation, pelletised ochre (acid mine wastewater sludge)was added into those FTWs for …
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Ecological-Hydrological Feedback in Forested Wetlands
In forested wetlands, the biotic and abiotic consequences of water level variability is not well understood. The effects of flooding on carbon and water exchanges are important knowledge gaps where progress could benefit management of natural resources and predicting of changes in surface …
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Pollutant swapping in constructed agricultural wetlands
… practices such as constructed agricultural wetlands. These wetlands, promoted in agri-environment schemes, may effectively intercept rainfall-mobilised phosphorus (P), nitrogen (N) and carbon (C). However, wetlands may potentially facilitate ‘pollutant swapping’: the transfer of one form or …
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Amphibian urbanism in Dhaka’s contested wetlands
Wetlands provide several ecosystem services and are globally critical infrastructure in the era of manufactured climate change. With rare exceptions, planners and policymakers have neglected urban wetlands. In this research, I delve into the complex relationship between urbanization and wetlands …
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Strategies for systemic urban constructed wetlands
… effective. In the last 20 years, constructed wetlands have arisen as a promising multi-purpose solution to stormwater problems. Constructed wetlands are artificial systems designed to mimic natural wetlands by using the same physical, biological, and chemical processes to treat water. They are …
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Littoral wetlands and lake inflow dynamics
Wetlands are increasingly recognized as important water treatment systems, which efficiently remove nutrients, suspended sediments, metals and anthropogenic chemicals through sediment settling and various chemical and biological processes. This thesis tackles three interconnected aspects of wetland …
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Resistance to Flow Through Riprian Wetlands
Increasing interest in the role of wetlands in pollutant removal, flood plain management, and sedimentation in recent years has prompted research into hydraulic processes inherent to these systems. The research described in this thesis focuses on flow processes within ecosystems known as riparian …
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Floating wetlands for urban stormwater treatment
A floating treatment wetland (FTW) is an ecological approach which seeks to reduce point and nonpoint source pollution by installing substrate rooted plants grown on floating mats in open waters. While relatively novel, FTW use is increasing. A review of literature identified several research gaps, …
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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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Urban wastewater treatment with mature constructed wetlands
… for the application of vertical-flow constructed wetlands (VF CWs) as sustainable and cost-efficient technology in treating various types of wastewater, including urban wastewater, continuous loading of wetlands over time can lead to performance inefficiency and generate operational problems …
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Bird Use of Cumberland Island's Freshwater Wetlands
… island off the coast of Georgia. Its freshwater wetlands are an important, rare habitat to have on a barrier island surrounded by saltmarsh and ocean. Many species of birds require freshwater wetlands as feeding, roosting and nesting grounds. However, the freshwater wetlands on Cumberland Island …
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Tradeoffs among ecosystem services in restored wetlands
… services while enhancing the value of others. Wetlands provide many ecosystem services, such as water quality maintenance, carbon storage, flood water abatement, and biodiversity support. Current compensatory wetland mitigation policy relies on the assumption that wetlands can be restored to …
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Assessing the impact of the wetlands program : the effect of wetlands regulations on development - the developer's perspective in Massachusetts
Thesis (M.C.P.)--Massachusetts Institute of Technology, Dept. of Urban Studies and Planning, 1980.
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Interactions between hydrology and biogeochemistry within riparian wetlands
… of humanly mediated climate change. Riparian wetlands, as a transition zone between terrestrial and aquatic ecosystems, occupy large fractions of terrestrial ecosystems and provide important ecohydrological services. Due to their anoxic environments, riparian wetlands are able to store …
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Demographics of Western South Dakota Wetlands and Basins
<p>Wetlands, whether natural or man-made in origin, are an important feature of the semiarid landscape of western South Dakota. These wetlands have numerous social and economic values and functions for both landowners and non-owners, as well as for fish and wildlife species. For this reason, …
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Birds on Modified Wetlands in Eastern South Dakota
… species (other than Anatidae) in the prairie wetlands ecosystem. Seven wetlands on Waterfowl Production Areas in eastern South Dakota were utilized to measure differences between bird communities in plots with dug brood complexes and non-modified plots. Thirty-eight species of wetland birds …
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