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 0 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 13 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Microbial Source Tracking written by Jorge W. Santo Domingo and published by Emerging Issues in Food Safety. This book was released on 2007 with total page 285 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents a state-of-the-art review of the current technology and applications being utilized to identify sources of fecal contamination in waterways. - Serves as a useful reference for researchers in the food industry, especially scientists investigating etiological agents responsible for food contamination. - Provides background information on MST methods and the assumptions and limitations associated with their use. - Covers a broad range of topics related to MST, including environmental monitoring, public health and national security, population biology, and microbial ecology. - Offers valuable insights into future research directions and technology developments.
Download or read book Use of Spatial Sampling and Microbial Source tracking Tools for Understanding Fecal Contamination at Two Lake Erie Beaches written by and published by . This book was released on 2006 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Microbial Source Tracking Methods Applications and Case Studies written by Charles Hagedorn and published by Springer Science & Business Media. This book was released on 2011-06-08 with total page 645 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understanding the origin of fecal pollution is essential in assessing potential health risks as well as for determining the actions necessary to remediate the quality of waters contaminated by fecal matter. As a result, microbial source tracking (MST) has emerged as a field that has evolved and diversified rapidly since the first approaches were described only a decade ago. In response to the emergence of MST, there have been three large multi-laboratory method comparison studies (two in the US and one in Europe), plus numerous workshops, book chapters, and review articles dedicated to synthesizing information on the topic. Furthermore, a federal (USEPA) guide document describing the uses and limitations of MST methods was published in 2005, and a book dedicated to MST as an emerging issue in food safety was published in 2007. These documents provide a collective body of literature on MST that is both conflicting and complementary, often repetitious, and difficult to condense and interpret. In addition, it does not reflect the current diversity of MST approaches with different organisms, newer methodologies such as quantitative PCR, and anthropogenic chemicals, nor does it embrace the scope of MST research being conducted around the world. The three editors of the book, all with extensive MST expertise, have developed chapters and invited authors who reflect the rich diversity and truly international scope of MST. The unifying theme throughout the book is the design of more standardized approaches to MST that include performance criteria (regardless of method or organism), plus recommendations for field study design and MST implementation. The editors intend that this book will serve as a valuable reference for all those who are involved with
Download or read book Bacterial Source Tracking in Impaired Watersheds written by Emily Catherine Martin and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Bacterial contamination due to excessive levels of bacteria is a confounding problem and remediation of impaired watersheds relies on the detection of fecal indicator bacteria and then assessing the source of said bacteria. Bacterial source tracking (BST) is an approach for assessing potential sources of this contamination. The purpose of this study was to utilize both cultivation-independent and -dependent methods to improve the ability to track sources of fecal contamination. First, E. coli community composition was assessed across three standard water quality assessments including USEPA Methods 1603 and 1604, and Colilert®, to determine their impact on BST library-based performance. Results indicate that the three assessed methods of enumeration and isolation may select for different populations of E. coli and standardized methods may be warranted if library-dependent BST is part of a research plan. Next, BST techniques were used to enumerate and characterize E. coli communities across various dairy manure management techniques used in the Leon River watershed in central Texas to determine effectiveness of BST efforts in tracking contamination from dairy manure. Results of this study indicated that manure and effluent management strategies which employed means to remove solids from the manure tended to decrease the levels of E. coli in the effluent. Some E. coli genotypes were found across the managerial treatments even though there were no clear seasonal trends or site groupings among the dataset. The vast majority of the isolates classified using the Texas E. coli BST library were correctly classified back to their major source class, thus increasing confidence in the methods currently being utilized to track dairy fecal contributions in this Central Texas watershed. Finally, deer bacterial fecal communities from south and central Texas were analyzed using 454-pyrosequencing to assess the potential for the development of a deer-specific BST marker. Microbial communities did not cluster by site or year suggesting that deer fecal communities in these Texas regions are stable over time and could be amenable to marker development. The electronic version of this dissertation is accessible from http://hdl.handle.net/1969.1/149494
Download or read book Natural and Constructed Wetlands written by Jan Vymazal and published by Springer. This book was released on 2016-08-26 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book extends the knowledge on wetland ecosystem services based on the new research. The information combines the achievements gained in carbon sequestration, nutrient accumulation, macrophyte decomposition, wastewater treatment, global warming mitigation in constructed as well as natural wetlands across the globe. The book presents up-to-date results of ongoing research and the content of the book could be used by wetland scientists, researchers, engineers, designers, regulators, decision-makers, universities teachers, landscape engineers and landscape planners as well as by water authorities, water regulatory offices or wastewater treatment research institutions.
Download or read book Bacterial Source Tracking and Survival of Escherichia Coli written by Cynthia L. Meays and published by . This book was released on 2005 with total page 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 Bacterial Source Tracking and Survival of Escherichia Coli written by and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Surface water is used for drinking by many people around the world. E. coli is the most frequently used bacterial indicator used for assessing water quality. The survival, sources, and concentrations of E. coli were examined through a series of experiments that investigated the survival of beef cattle E. coli on land and in water, and used bacterial source tracking (BST) to determine the sources of fecal contamination diurnally and annually in multiple watersheds in British Columbia. A fecal pat experiment was conducted to examine the survival of E. coli under 4 levels of solar exposure. E. coli survived longer with increasing shade. Age of fecal pats, as well as exposure to solar radiation negatively influenced the survival of E. coli. The survival of E. coli in stream water was examined in filtered and unfiltered stream water at 3 different temperatures (6, 20 and 26 oC). There was no significant difference in the survival of E. coli in filtered versus non-filtered stream water. Lower water temperatures (6 oC) increased the survival of E. coli. The addition of manure to the water substantially increased the nutrient concentrations and organics. BST is a rapidly growing area of research and technology development and many methods are being developed and tested. The choice of method used for BST depends on: question(s) to be answered, scale of identification needed, available expertise, cost of analysis, turnaround time, and access to facilities. The spatial, diurnal, and annual sources and concentrations of E. coli were investigated in several watersheds in British Columbia. Fecal coliforms and E. coli concentrations varied throughout the day, as well as by site, month and year. Ribotyping identified many different sources of E. coli within the watersheds. The majority of E. coli isolates classified were from wildlife sources in each watershed even though they had different land-use.
Download or read book Phytoremediation written by Abid A. Ansari and published by Springer. This book was released on 2016-10-04 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text details the plant-assisted remediation method, “phytoremediation," which involves the interaction of plant roots and associated rhizospheric microorganisms for the remediation of soil contaminated with high levels of metals, pesticides, solvents, radionuclides, explosives, crude oil, organic compounds and various other contaminants. Each chapter highlights and compares the beneficial and economical alternatives of phytoremediation to currently practiced soil removal and burial practices.
Download or read book Microbial Source Tracking of Escherichia Coli in Lake Erie written by Richard J. Boheen and published by . This book was released on 2009 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: A microbial source tracking study was initiated to determine the sources of Escherichia coli in Lake Erie in western New York State. E. coli isolates were obtained from human and animal sources (deer, dog, cat, cow, goose, and gull) to create a library of known genetic fingerprints. E. coli were isolated from the sand and water at two recreational beaches on Lake Erie: Point Gratiot Park Beach, and Wright Park Beach. E. coli were also isolated from the local tributaries: Canadaway Creek, Crooked Brook, and Hyde Creek. Amplified-Fragment Length Polymorphisms (AFLP) were used to generate unique genetic fingerprints from all E. coli isolates. DNA fingerprints from known sources were compiled into libraries using Gel Compar II software. Jackknife analysis of the DNA fingerprinting library using maximum similarities yielded percentages of 92%, 91.2%, 75%, 93.9%, 91.9%, 100%,100%, and 94.9% for goose, dog, deer, human, cat, cow, gull, and sand respectively. Sand isolates were added to the DNA fingerprinting library based on high fidelity of the group. Genetic comparison of DNA fingerprinting from unknown isolates against the DNA fingerprint library was based on densiometric curve comparisons based on the Pearson correlation coefficient, and dendograms were constructed with the unweighted pair group method using arithmetic averages (UPGMA). Comparison of 294 DNA fingerprints from environmental E. coli isolates against the DNA fingerprint library based on maximum similarities indicated that most isolates (73.5%) were not genetically similar to host sources in the library (based on a match of 85% or greater). Interestingly, 26% of the E. coli isolates obtained from Wright Park Beach were genetically similar to isolates from shoreline sand. The results of this study suggest that most of the E. coli present in the beach waters, sand and tributaries are naturalized strains and are not the result of fecal pollution. -- Author abstract.
Download or read book Ecotechnologies for the Treatment of Variable Stormwater and Wastewater Flows written by Katharina Tondera and published by Springer. This book was released on 2017-11-15 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides an essential overview of ecotechnologies (also known as green infrastructure or nature-based solutions) which are considered to be relatively resilient to variations in stormwater and wastewater inflow. In particular, it focuses on various types of constructed wetlands, biofilters and ponds. Stormwater flows are inherently variable, due to rainfall events and fluctuations in loading. This variability has significant effects on the performance of treatment systems, but has rarely been specifically addressed in design manuals, performance assessments or modelling. The book’s respective chapters cover the main contaminant categories of interest (nutrients, faecal microbes, metals and emerging contaminants) and their removal processes using ecotechnologies, addressing urban, industrial and agricultural applications. In addition, they review modelling tools with the potential to improve our understanding of flow variability and the ability to simulate and predict responses to it.
Download or read book Manual of Environmental Microbiology written by Cindy H. Nakatsu and published by John Wiley & Sons. This book was released on 2020-08-11 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The single most comprehensive resource for environmental microbiology Environmental microbiology, the study of the roles that microbes play in all planetary environments, is one of the most important areas of scientific research. The Manual of Environmental Microbiology, Fourth Edition, provides comprehensive coverage of this critical and growing field. Thoroughly updated and revised, the Manual is the definitive reference for information on microbes in air, water, and soil and their impact on human health and welfare. Written in accessible, clear prose, the manual covers four broad areas: general methodologies, environmental public health microbiology, microbial ecology, and biodegradation and biotransformation. This wealth of information is divided into 18 sections each containing chapters written by acknowledged topical experts from the international community. Specifically, this new edition of the Manual Contains completely new sections covering microbial risk assessment, quality control, and microbial source tracking Incorporates a summary of the latest methodologies used to study microorganisms in various environments Synthesizes the latest information on the assessment of microbial presence and microbial activity in natural and artificial environments The Manual of Environmental Microbiology is an essential reference for environmental microbiologists, microbial ecologists, and environmental engineers, as well as those interested in human diseases, water and wastewater treatment, and biotechnology.
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 Artificial or Constructed Wetlands written by María del Carmen Durán-Domínguez-de-Bazúa and published by CRC Press. This book was released on 2018-06-15 with total page 439 pages. Available in PDF, EPUB and Kindle. Book excerpt: Artificial or constructed wetlands are an emerging technology particularly for tropical areas with water scarcity. For big cities, the sustainable management of water resources taking into account proper use is always challenging. The book presents case studies illustrating the above. As plants and microorganisms are a fundamental part of the correct functioning of these systems, their contribution to the degradation of the organic matter and to the removal and transformation of the pollutant compounds present in the wastewaters is also a highlight of this book.
Download or read book Microbial Forensics written by Bruce Budowle and published by Academic Press. This book was released on 2019-11-30 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt: Microbial Forensics, Third Edition, serves as a complete reference on the discipline, describing the advances, challenges and opportunities that are integral in applying science to help solve future biocrimes. New chapters include: Microbial Source Tracking, Clinical Recognition, Bioinformatics, and Quality Assurance. This book is intended for a wide audience, but will be indispensable to forensic scientists and researchers interested in contributing to the growing field of microbial forensics. Biologists and microbiologists, the legal and judicial system, and the international community involved with Biological Weapons Treaties will also find this volume invaluable. - Presents new and expanded content that includes a statistical analysis of forensic data, legal admissibility and standards of evidence - Discusses actual cases of forensic bioterrorism - Includes contributions from editors and authors who are leading experts in the field, with primary experience in the application of this fast-growing discipline
