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 13 of 13 for “"Bacterial Source Tracking"”.
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Bacterial Source Tracking of E. coli in a Constructed Wetland
<p>Bacterial source tracking was used to identify sources of fecal contamination in a constructed wetland. Nucleotide sequence differences in the <em>Escherichia coli </em>malate dehydrogenase (<em>mdh</em>) gene were used to distinguish between strains isolated from pigeon and cattle feces. …
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Bacterial Source Tracking in the Sinking Creek Watershed Using Antibiotic Resistance Analysis and Ribotyping.
… not coincide with the presence of pathogens. Bacterial source tracking is a term describing methods to determine the origin of fecal pollution based on bacterial traits. The objective of this research is to evaluate the use of 2 bacterial source tracking techniques, antibiotic resistance …
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American Alligator Fecal Coliform and Pathogen Identification, Genotypic Fingerprinting, and REP-PCR Bacterial Source Tracking in South Carolina
… performed to assess numerous coastal nonpoint source pollution components from poikilothermic (i.e. cold-blooded) wildlife sources, including fecal coliform identification, genotypic fingerprinting, and bacterial source tracking. The overall goals were to identify, fingerprint, and detect …
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A Comparative Study of Three Bacterial Source Tracking Methods and the Fate of Fecal Indicator Bacteria in Marine Waters and Sediments
… (FIB) in sand and sediments. The microbial source tracking (MST) methods antibiotic resistance analysis (ARA), Bacteroides human-specific primer test, and fluorometry were compared against the FIBs to determine how reliable each method was in detecting the presence of human fecal …
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The usefulness of multiple antibiotic resistance (MAR) indexing technique in differentiating fecal coliform bacteria from different sources
Pollution of water sources with human fecal matter and associated intestinal pathogens poses a great risk to public health. Fecal contamination of water is not the only problem to communities that consume untreated water. The extent of the microbial contamination of water sources also needs to be …
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Determining Sources of Fecal Contamination in Two Rivers of Northumberland County, Virginia
… the lower Potomac River and the Chesapeake Bay. Bacterial source tracking (antibiotic resistance analysis of Eschericia coli) was used to determine the sources of fecal contamination that have caused shellfish harvest closures in these two rivers. A total of 1,248 Eschericia coli isolates were …
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Determining Sources of Fecal Pollution in Water for a Rural Virginia Community
This project involves developing and applying bacterial source tracking (BST) methodology to determine sources of fecal pollution in water for a rural community (Millwood, VA). Antibiotic resistance analysis (ARA) is the primary BST method for fecal source identification, followed by randomly …
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Identifying Sources of Fecal Pollution in the Appomattox River Watershed
Sources of E. coli were determined from impaired waterways in the Appomattox River watershed (in the lower Piedmont and South-Central Virginia) for the development of bacterial Total Maximum Daily Loads (TMDLs). The Appomattox River watershed is primarily undeveloped with 70.8% of the land …
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Identifying Sources of Fecal Pollution in Water as Function of Sampling Frequency Under Low and High Stream Flow Conditions
Sources of fecal pollution were evaluated as a function of sampling frequency with stream samples from Mill Creek, Montgomery County, VA. Samples were collected monthly for one year, plus weekly for four consecutive weeks during seasonal high flows (March), and seasonal low flows …
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Determining Sources of Fecal Pollution in the Blackwater River Watershed, Franklin County, Virginia
… resistance analysis (ARA) was used to determine sources of fecal pollution in the Blackwater River in South-central Virginia. The Department of Environmental Quality designated six segments as impaired due to high fecal coliform concentrations with non-point source (NPS) agriculture the suspected …
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Determining Sources of Fecal Pollution in Washington D.C. Waterways
… (ARA) of Enterococci was used to determine sources of fecal contamination in three District of Columbia waterways: Rock Creek, the Anacostia River, and the Potomac River. These three waterways were identified as exceeding water quality standards set for fecal coliform levels and were …
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Analysis of Water Quality Parameters in East Texas: A Temporal Study of Attoyac Bayou Watershed Between 2010 to 2024
… concentration was likely from the wildlife sources based on a previous bacterial source tracking (BST) study. The <em>E. coli</em> concentration was significantly higher in the post WPP period and in spring and winter, which can be attributed to higher stream discharges during these periods. …
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Release and Transport of Bacteria and Nutrients from Livestock Manure Applied to Pastureland
… bacteria and nutrients from point and nonpoint sources to surface water bodies is of significant concern in Virginia and the United States. In Virginia, 4,320 river miles are impaired for one or more beneficial use and 72% of the streams are impaired due to pathogen indicators (VDEQ, 2002). Land …