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Showing 1 to 20 of 22 for “"fecal pollution"”.
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Determining Sources of Fecal Pollution in Washington D.C. Waterways
… 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 designated by the …
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Identifying Sources of Fecal Pollution in the Appomattox River Watershed
… the Appomattox watershed and analyzed for fecal coliforms, E. coli, and resistance to 7 antibiotics of varying concentrations. A total of 486 water samples (9,907 isolates) were analyzed during the study. The objectives of this study were verify that each sampling site exceeded state …
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Determining Sources of Fecal Pollution in Water for a Rural Virginia Community
… (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 amplified polymorphic DNA (RAPD) analysis for confirmation. Millwood …
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Determining Sources of Fecal Pollution in the Blackwater River Watershed, Franklin County, Virginia
… 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 source of …
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Evaluation of survival and recovery characteristics of bifidobacteria as indicators of fecal pollution of water
… water quality. An ideal indicator of fecal pollution should be present in sufficient density to allow detection, present simultaneous with pathogen(s), incapable of aftergrowth in external aquatic environments, easy to enumerate, and exclusively of fecal origin. Unfortunately, none of …
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Application of Multivariate Statistical Methodology to Model Factors Influencing Fate and Transport of Fecal Pollution in Surface Waters
… factors influencing the fate and transport of fecal pollution is necessary to identify sources and effectively design and implement Best Management Practices (BMPs) to protect and restore surface water quality. Sinking Creek is listed on the State of Tennessee’s 303D list as impaired due to …
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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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Identification of fecal pollution sources of karst waters by a combination of Bacteroidales genetic marker, bacterial indicators, and environmental variables
Fecal contamination in Midwestern karst regions was evaluated by a combination of Bacteroidales-based microbial source tracking (MST), traditional bacterial indicators, and environmental variables. Water samples from springs and wells were collected from Illinois, Wisconsin, Kentucky and Missouri …
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Evaluation, Development and Improvement of Genotypic, Phenotypic and Chemical Microbial Source Tracking Methods and Application to Fecal Pollution at Virginia's Public Beaches
… of 2004 and 2005 to determine the origins of fecal pollution at beaches with a past history of, or the potential for, high enterococci counts and posted advisories. At Hilton and Anderson beaches, ARA and fluorometry in the summer of 2004 detected substantial human-origin pollution in …
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Bacterial Source Tracking in the Sinking Creek Watershed Using Antibiotic Resistance Analysis and Ribotyping.
<p>Fecal pollution of surface water is a significant environmental health issue. Indicator organisms are used to monitor microbial water quality, but often their presence does not coincide with the presence of pathogens. Bacterial source tracking is a term describing methods to determine the origin …
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Development of hydrograph-based approach to modeling fate and transport of sediment-borne bacteria in lowland rivers
Fecal pollution is one of the major factors responsible for water quality impairments of rivers and streams, particularly organic-rich fine-grained lowland streams. While predicting fecal pollution is generally required in the development of water quality restoration plans like Total Maximum Daily …
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Development and evaluation of a colorimetric coliphage assay detection system
… than the APHA method under conditions of high fecal pollution, but both methods performed equally well in coliphage detection under conditions of low fecal contamination, and 5) the LCPA and CAB methods were equally as sensitive in coliphage detection as the APHA method. Finally, the coliphage …
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American Alligator Fecal Coliform and Pathogen Identification, Genotypic Fingerprinting, and REP-PCR Bacterial Source Tracking in South Carolina
… 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 American …
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Isolation, Enumeration and Identification of Enterococci
… Escherichia coli, serves as an indicator of fecal contamination. In recent years there has been a steady increase of interest in the enterococci, members of the genus Streptococci, as indicators. |It is still debatable whether the coliforms or the enterococci are better indicators of …
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Enhanced recovery of injured and noninjured cells of Bifidobacterium species from water and dairy products
… They are potential indicators of human fecal pollution in shellfish harvesting waters. In addition, <u>Bifidobacterium</u> spp. are used as supplements in dairy products. These bacteria are easily injured and it is important to have methods that will recover all cells (injured and …
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Microbial Source Tracking in a Mixed Use Watershed in Northern Virginia
… remain under a certain standard for levels of fecal indicator bacteria (FIB). The sources of fecal pollution in neighboring watersheds within the county were determined over the 12 months previous to this project by performing Antibiotic Resistance Analysis (ARA, a microbial source tracking …
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Microbial Source Tracking of Bacteroides to Identify Human and Bovine Fecal Loading in McDaniel Lake
Fecal waste enters waterways from run-off during rain events, and is especially high in agricultural areas due to manure application and livestock. Increased fecal waste may also be due to direct human influence. This fecal loading may lead to eutrophication and poses health hazards to humans. By …
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Sands and environmental conditions impact the abundance and persistence of the fecal indicator bacteria Enterococcus at recreational beaches
The marine fecal indicator Enterococcus is measured at beaches to detect fecal contamination events, and beaches are closed to bathers when Enterococcus is found to exceed the federally mandated limit. This dissertation presents evidence that beach sands are an environmental reservoir of …
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Sands and environmental conditions impact the abundance and persistence of the fecal indicator bacteria Enterococcus at recreational beaches
The marine fecal indicator Enterococcus is measured at beaches to detect fecal contamination events, and beaches are closed to bathers when Enterococcus is found to exceed the federally mandated limit. This dissertation presents evidence that beach sands are an environmental reservoir of …
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Densities of indicator bacteria in urban and rural runoff
… baseline densities for total coliform, fecal coliform, and fecal streptococcus. Results indicated that mean values for total coliforms and fecal coliforms during dry flow were within Virginia State standards for urban runoff, but exceeded those two standards 100 percent and 91.9 percent …
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