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Use of Spatial Sampling and Microbial Source-Tracking Tools for Understanding Fecal Contamination at Two Lake Erie Beaches

Source-tracking tools were used to identify potential sources of   fecal contamination at two Lake Erie bathing beaches: an urban beach   (Edgewater in Cleveland, Ohio) and a beach in a small city   (Lakeshore in Ashtabula, Ohio). These tools included identifying   spatial patterns of Escherichia coli (E. coli) concentrations in   each area, determining weather patterns that caused elevated E.   coli, and applying microbial source tracking (MST) techniques to   specific sites. Three MST methods were used during this study:   multiple antibiotic resistance (MAR) indexing of E. coli isolates   and the presence of human-specific genetic markers within two types   of bacteria, the genus Bacteroides and the species Enterococcus   faecium.     Multiple tools are needed to help identify sources of fecal   contamination at coastal beaches. Spatial sampling identified   patterns in E. coli concentrations and yielded information on the   physical pathways of contamination. MST methods provided  information on whether the source was likely of human or nonhuman   origin only; however, MST did not provide information on the   pathways of contamination.    (microbial source tracking); (MST); (bacterial source tracking);   (BST)

Status
In progress
Type
Project
Start Date
End Date
Researchers
Donna FrancyPrincipal Investigator
Associated with 11 projects
Erin E. BertkeResearcher
Associated with 1 projects
Agencies
USGS (United States Geological Survey $ 100,000.00USDEstimates

Funding 15 projects for a total of $273,800.00

Funding 1 projects for a total of $100,000.00
Ohio Water Development Authority $ 100,000.00USDEstimates

Funding 2 projects for a total of $100,000.00
Scope of Study
Field Investigation
Laboratory Investigation
Scale of Phenomena
Cellular
Lake Basin Connecting Channels
Lake Erie
State Province
Ohio
Region Being Monitored
Near and OpenShore Waters
Nearshore Terrestrial
Resource Being Monitored
Human Health
Beneficial Use Impairment Assessments
Beach Closings
Annex Numbers
Pollution from Contaminated Groundwater
Pollution from Non-Point Sources
Remedial Action Plans and Lakewide Management Plans
Research & Development
Annex 17
Physical and transformational processes affecting delivery of pollutants
General
Monitoring
Annex
  • Annex Numbers
    Annex Numbers
    Pollution from Contaminated Groundwater
    Pollution from Non-Point Sources
    Remedial Action Plans and Lakewide Management Plans
    Research & Development
  • Annex 17
    Annex 17
    Physical and transformational processes affecting delivery of pollutants

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