Download or read book Source Tracking of Escherichia Coli in a Freshwater Lake in Northwestern Ontario Boulevard Lake Thunder Bay written by Jeremy Yang and published by . This book was released on 2012 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Escherichia coli is regularly used as a fecal indicator bacteria (FIB) in recreational waters but its persistence in the environment brings its use into doubt. A secondary FIB known as Bacteroides has been under a lot of research lately. Because Bacteroides can be measured with quantitative PCR (qPCR) techniques easily, this makes it an effective FIB to detect fecal contamination. Boulevard Lake in Thunder Bay, Ontario experiences instances of elevated levels of E. coli throughout the summer seasons. For the 2011 season the Bacteroides 16S rDNA markers were monitored and compared with the E. coli population. As both of these FIB are found in feces, influxes of fecal contamination would see increases in both populations. The planktonic E. coli population densities exceeded the Canadian Recreational Water Quality Guidelines of 2.30 log CFU 100ml-1 two times throughout the summer season. These were measured at 2.86 and 2.38 log CFU 100 ml-1 on July 21, 2011 and September 2, 2011, respectively. The Bacteroides biomarkers did have any significant increases during these peak periods of E. coli with p> 0.05. This would suggest that the increased levels of E. coli may not have been due to fecal contaminants. Further investigations with a microbial source tracking approach will provide insights to the potential source(s) of E. coli in Boulevard Lake. For both 2010 and 2011, the planktonic E. coli population at Boulevard Lake was monitored."--Abstract.
Download or read book Distribution and Occurrence of Escherichia Coli in Water and Sediments at Grand Glaize Beach in Lake of the Ozarks State Park written by Jordan Lee Wilson and published by . This book was released on 2013 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Public swimming beaches at the Lake of the Ozarks State Park (LOSP) are popular vacationing spots for many Missourians; however, on several occasions Escherichia coli (E. coli) concentrations have exceeded standards set by the Missouri Department of Natural Resources (MDNR). Exceedances lead to beach closures which not only represent a potential public health threat but are also detrimental to the local economy and the public's perception of the lake's general water quality. In a collaborative effort between Missouri S&T, the United States Geological Survey (USGS) and the MDNR, an in-depth, two-summer study was conducted which included collection of over 1,300 water and sediment samples at 36 locations, sediment resuspension, runoff analysis and microbial source tracking (MST) studies. Coupling spatial, temporal and microbial source tracking studies, predominant sources of E. coli contamination at Lake of the Ozarks State Park identified during this study were the fecal contamination from waterfowl harbored in beach sediments and from tributary inflow. Once concentrated in sediments, E. coli are likely suspended into the water column by bathers and slowly decay and potentially advect out of Grand Glaize Beach Cove. Modifications to beach and waterfowl management along with routine lake-wide sampling will likely alleviate E. coli contamination at Grand Glaize Beach and improve public perception of general lake quality"--Abstract, page iv.
Download or read book Factors Affecting Escherichia Coli Concentrations at Lake Erie Public Bathing Beaches written by Donna S. Francy and published by . This book was released on 1998 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Escherichia Coli at Ohio Bathing Beaches written by Bernard T. Nolan and published by . This book was released on 2003 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bacterial Source Tracking of E Coli in a Constructed Wetland written by Rose M. Martin and published by . This book was released on 2012 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Microbial Source Tracking of E Coli in Storm Water Using the AFLP PCR Method written by Salam Daoud Assi and published by . This book was released on 2005 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Escherichia Coli in Water and Sand at Beaches in Lake Huron Lake Ontario and Hamilton Harbour written by J. E. Milne and published by . This book was released on 2004 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development and Validation of Novel Methods for Microbial Source Tracking Based on Escherichia Coli as an Indicator of Water Quality written by Maxim Sheludchenko and published by . This book was released on 2011 with total page 167 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Source Determination and Predictive Model Development for Escherichia Coli Concentrations at F W Kent Park Lake Oxford Iowa written by Reid A. Simmer and published by . This book was released on 2016 with total page 71 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fecal contamination of Iowa recreational water bodies poses a threat to water quality as well as human health. Concern regarding the health effects of waterborne pathogens resulted in 149 beach advisories across 39 state-owned beaches during the 2015 beach season alone. While the presence of pollution is often clear, its cause and source may be difficult to identify. Furthermore, the current practice in Iowa of sampling once per week leads to high uncertainty and inadequately protects swimmers from exposure. The objective of this study was to determine the influential environmental factors and sources causing spikes in fecal contamination at F.W. Kent Park Lake in Oxford, IA, and to develop a predictive model of beach E. coli concentrations. Water samples were collected at the swimming beach as well as throughout the watershed from May to October, 2015. All samples were analyzed for Escherichia Coli using the IDEXX Colilert enumeration method. Together with weekly data from 2012 through 2014, two predictive models of E. coli based upon influential environmental and water quality variables were developed using EPA Virtual Beach software. These models proved to be more accurate than the current method used to assess risks to swimmers that assumes bacterial concentrations remain constant between samples. In addition, through statistical analysis and modeling, this study found evidence that the main source of fecal contamination were wild geese that frequent the beach.
Download or read book Microbial Source Tracking written by Caitlen C. Denny and published by . This book was released on 2012 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Escherichia Coli and Microbial Source Tracking Marker Concentrations in and Near a Constructed Wetland in Maumee Bay State Park Oregon Ohio 2015 16 written by Christopher M. Kephart and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Using Nutrient Utilization Patterns to Determine the Source of Escherichia Coli Found in Surface Water written by Jacinta Chinwe Uzoigwe and published by . This book was released on 2004 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Comprehensive Approach in Identifying Sources of Contamination Understanding Water Quality Perception and Translating Information Through Community Outreach in the Upper Gila Watershed in Clifton Arizona written by Berenise Rivera and published by . This book was released on 2014 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt: As of 2010, there are approximately twenty one surface water locations classified as impaired for Escherichia coli (E. coli) contamination in the State of Arizona. Of note is the San Francisco River (SFR) which is currently listed on the US EPA 303d list of impaired waters due to E. coli bacteria present at higher concentrations than the US EPA standards for partial- and full-body contact. In 2010-2011 surface water samples were collected at sites within the impaired region to monitor E. coli and areas known for heavy recreational uses. Of 70 samples collected over 1 year, 81% were positive for universal Bacteroides marker (Allbac). Of the 57 Allbac-positive samples, 68% show contributions of the human-specific marker and 60% were positive for bovine-specific marker. While 28% of the total samples assayed showed elevated levels of E. coli (>235 MPN/100mL), there were minimal significant correlations between Bacteroides and generic E. coli across all samples. While this information is significant, past research has suggested that successfully distinguishing the sources of fecal contamination will not alone reduce or eliminate disease associated with contaminated water unless these investigations are coupled with public outreach and education. With this in mind a survey was developed to gather information about water quality perceptions, water use, peoples' attitudes, knowledge, and behaviors related to the water resources in Clifton, AZ. Survey questions consisted of multiple choice and Likert scales questions and were provided in both English and Spanish and were conducted during the summer of 2012 and winter of 2013. A total of 150 surveys were deployed with 38 surveys completed for a response rate of 25%. Our study findings indicate mixed attitudes on water quality with 80% reporting the SFR has poor water quality for drinking and 39% agree the SFR has poor water quality for swimming. Yet, 84% consider the river safe enough for picnics and activities near the water. Also, it was interesting to note participants' opinions regarding consequences of poor water quality with 66% of respondents indicating that they are concerned with poor water quality and their health. Clifton is a very tight knit community so it was not unexpected that the majority of the respondents (61%) get water quality information by having conversations with other people and 68% from newspapers, factsheets and brochures. Based on the survey responses, our team worked to develop two peer reviewed Extension publications entitled; Microbial Source Tracking: Watershed Characterization and Source Identification (Arizona Cooperative Extension, #AZ1547) and Water Quality, E. coli, and Your Health (#AZ1624). Publications have been developed in both English and Spanish and will be part of future outreach to this and other Arizona communities. It is our goal that these survey findings can be used to better tailor outputs appropriate for the targeted audience, namely the local Hispanic population. These results are important because they add to understanding perceptions of water quality and health risks in this rural community; and can lend towards enhanced outreach practices in other similar communities.
Download or read book Make it Safe written by Amanda M. Klasing and published by . This book was released on 2016 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The report, 'Make It Safe: Canada's Obligation to End the First Nations Water Crisis,' documents the impacts of serious and prolonged drinking water and sanitation problems for thousands of indigenous people--known as "First Nations"--living on reserves. It assesses why there are problems with safe water and sanitation on reserves, including a lack of binding water quality regulations, erratic and insufficient funding, faulty or sub-standard infrastructure, and degraded source waters. The federal government's own audits over two decades show a pattern of overpromising and underperforming on water and sanitation for reserves"--Publisher's description.
Download or read book Coal Tar Creosote written by C. Melber and published by WHO. This book was released on 2004 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt: On cover: IPCS International Programme on Chemical Safety. Published under the joint sponsorship of the United Nations Environment Programme, the International Labour Organization and the World Health Organization, and produced within the framework of the Inter-organization Programme for the Sound Management of Chemicals (IOMC)
Download or read book Pollution of Lakes and Rivers written by John P. Smol and published by John Wiley & Sons. This book was released on 2009-03-12 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt: Now in its second edition, Pollution of Lakes and Rivers provides essential insights into present-day water quality problems from an international perspective. Explains simply and effectively how lake sediments can be used to reconstruct pollution history Includes over 200 additional references and a new chapter on recent climatic change and its effects on water quality and quantity Tackles present-day water quality problems from an international perspective Previously published by Hodder Arnold PowerPoint slides of the artwork from the book are available from: http://post.queensu.ca/~pearl/textbook.htm Reviews: "This is a very well-written and wide-ranging volume that is both instructive and topical. It is likely to prove useful as an introduction to the general area, a reference source and for teaching purposes." (The Holocene, November 2008) "If you thought that paleolimnology was just mud, pollen, and diatoms then you will likely be both struck by the complexity of this field of research and grateful that John Smol, FRSC, has described it so clearly and broadly. Simply put, the second edition is an excellent book." ( Journal of Phycology, 2008) “This is a useful text. It provides a good level of detail so that the beginner in this area can appreciate what palaeolimnology can (and cannot) achieve. It goes beyond the simple introduction to provide a detailed understanding of how techniques can be applied ... This is a different take on the usual pollution text and would be of great use to those wishing to understand more from sedimentary records.” Taken from the British Ecological Society’s Teaching Ecology website "John Smol has extensive experience in this field of paleoenvironmental research which he combines well with his excellent written communication skills to produce a text that is easy to read but also thought provoking." (Quaternary Science Reviews, 2009) “The breadth of coverage in this text is impressive.” (Lake and Reservoir Management, 2009) “If I could speak with fluidity and clarity in my lectures as consistently as John Smol writes my students would be very grateful.” (Journal of Paleolimnology, 2009)
Download or read book Towns Ecology and the Land written by Richard T. T. Forman and published by Cambridge University Press. This book was released on 2019-02-07 with total page 637 pages. Available in PDF, EPUB and Kindle. Book excerpt: A pioneering book highlighting the dynamic environmental dimensions of towns and villages and spatial connections with surrounding land.
