Escherichia coli and Microbial Source Tracking Marker Concentrations in and Near a Constructed Wetland in Maumee Bay State Park, Oregon, Ohio, 2015–16

Scientific Investigations Report 2018-5127
Prepared in cooperation with the University of Toledo
By: , and 

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Abstract

Elevated Escherichia coli (E. coli) concentrations at the Maumee Bay State Park (MBSP) Lake Erie beach have resulted in frequent recreational water-quality advisories. After the construction of a wetland along Berger Ditch in Maumee Bay State Park, Oregon, Ohio, samples were collected and analyzed for concentrations of E. coli and microbial source tracking (MST) markers. This study was done by the U.S. Geological Survey, in cooperation with the University of Toledo, to provide data that can be used to help evaluate the effects of the wetland on water quality in MBSP. From July 2015 to February 2016, 116 samples were collected from six sites. Median GenBac (general marker) and E. coli concentrations were higher in samples from Berger Ditch sites than in samples from the wetland sites. No statistically significant difference was found between median E. coli concentrations in samples collected at Berger Ditch sites upstream and downstream from the wetland. The frequency of detection of the human-associated Bacteroides MST marker (HF183) decreased from 39 percent upstream from the wetland to 22 percent downstream from the wetland; however, the HF183 median concentrations from these two groups of samples were nearly the same (2,700 to 2,800 copies per 100 milliliters from upstream to downstream). The waterfowl-associated Helicobacter MST marker (GFD) was detected in 13 percent of samples from the Berger Ditch site upstream from the wetland, although it was not detected in samples from the Berger Ditch site downstream from the wetland. The ruminant-associated MST marker, Rum2Bac, was not detected at any site during this study.

Suggested Citation

Kephart, C.M., Brady, A.M.G., and Jackwood, R.W., 2019, Escherichia coli and microbial source tracking marker concentrations in and near a constructed wetland in Maumee Bay State Park, Oregon, Ohio, 2015–16: U.S. Geological Survey Scientific Investigations Report 2018–5127, 13 p., https://doi.org/10.3133/sir20185127.

ISSN: 2328-0328 (online)

Study Area

Table of Contents

  • Abstract
  • Introduction
  • Methods of Study
  • Quality Control Measures of Variability and Bias
  • Escherichia coli and Microbial Source Tracking Marker Concentrations at Selected Sites Entering Maumee Bay, Lake Erie
  • Summary
  • References Cited
  • Appendix 1. Concentrations of Escherichia coli and microbial source tracking markers at Berger Ditch, wetland, and Maumee Bay sites, Oregon, Ohio, 2015–16

Additional publication details

Publication type Report
Publication Subtype USGS Numbered Series
Title Escherichia coli and microbial source tracking marker concentrations in and near a constructed wetland in Maumee Bay State Park, Oregon, Ohio, 2015–16
Series title Scientific Investigations Report
Series number 2018-5127
DOI 10.3133/sir20185127
Year Published 2019
Language English
Publisher U.S. Geological Survey
Publisher location Reston, VA
Contributing office(s) Ohio-Kentucky-Indiana Water Science Center
Description v, 13 p.
Country United States
State Ohio
City Oregon
Other Geospatial Lake Erie, Maumee Bay State Park
Online Only (Y/N) Y
Additional Online Files (Y/N) N