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 11 of 11 for “"Sediment pollution"”.
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Investigating the Use of Fallout Radionuclides Beryllium-7 and Excess Lead-210 as Short-Term Stream Sediment Chronometers in the Agricultural Upper Midwest, USA
Sediment pollution from agricultural fields is a concern for surface water quality in the Upper Midwest even with best management practices in place to prevent field erosion. Legacy stores of previously eroded field sediment may build up in streams over time and lead to persistent water quality …
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Geospatial Modeling of Forest Road Networks and Their Effect on Stream Macroinvertebrate Communities
… to be one of the largest contributors of sediment pollution to aquatic systems. Though impacts of road networks on aquatic systems can be potentially severe, little work has been performed to evaluate the effect that road spatial location within a watershed has on water quality. To address …
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Construction Site Sedimentary Pollution in a Watershed
<p>In the study of sediment pollution on and near a construction site, it is necessary to remember that sediment movement and deposition are part of the natural environment before the intervention of construction. As with many hydrologic problems, most sedimentation problems have visual impacts for …
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Assessment of heavy metal contamination in flooding area case study at Sungai Pahang and Sungai Kelantan
… caused the rivers to faced serious water and sediment pollution problems. Floods speed up the metal mobilization in rivers. The first objective of this study is to determine heavy metal contamination in environmental samples obtained from flood prone areas in Pahang River and Kelantan River. …
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Microplastic ingestion by two estuarine-associated mullet species, Chelon richardsonii and Chelon dumerili in the Breede Estuary, South Africa
… key evidence of the magnitude and nature of MP pollution. Research particularly in the southern hemisphere is poorly documented for MP ingestion. This study shows MP ingestion by two mullet species (Chelon richardsonii & Chelon dumerili) in the Breede Estuary, South Africa. It was found that …
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Evaluation of a Permittivity Sensor for Continuous Monitoring of Suspended Sediment Concentration
… the US Environmental Protection Agency (USEPA) sediment is a leading cause of water quality impairment (US EPA, 2002). The annual costs of sediment pollution in North America alone are estimated to range between $20 and $50 billion (Pimentel et al., 1995; Osterkamp et al, 1998, 2004). Due to the …
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Water Urbanism: Fish Market Design Proposal
… this bay faces many issues such as nutrient and sediment pollution, Storm water runoff, lowering of shellfish species etc. One of the major causes of the polluted bay is storm water runoff. Storm water washes pollution off the roads and other surfaces and takes them to the water. Stormwater is …
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Quantifying Near-Bank Turbulence Through a Storm Event
Sediment is a leading cause of water quality impairment for streams and rivers. Streambank erosion is a dominant source contributing to sediment pollution and there is a growing need for adopting management practices to reduce it. Bank retreat occurs from a combination of fluvial erosion, subaerial …
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Impact of black swan grazing and anthropogenic contaminants on New Zealand seagrass meadows
… contaminants (specifically nutrient enrichment, sedimentation and herbicide residues) on seagrass meadows in New Zealand. The impact of current levels of these anthropogenic contaminants on seagrass resilience to swan grazing was also assessed in situ. To quantify black swan grazing pressure on …
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Sediment-effects on seagrass Zostera muelleri in New Zealand
… of the services that seagrasses provide are: sediment and coastal stability; maintenance of water quality; primary productivity for coastal ecosystems; fisheries nursery habitat; food for large herbivores; food-webs for complex marine communities; fisheries habitats; and carbon sink. They help …