General Information
    • ISSN: 2010-0264 (Print)
    • Abbreviated Title: Int. J. Environ. Sci. Dev.
    • Frequency: Monthly
    • DOI: 10.18178/IJESD
    • Editor-in-Chief: Prof. Richard Haynes
    • Executive Editor: Ms. Nancy Y. Liu
    • Abstracting/ Indexing: Scopus (Since 2019), Chemical Abstracts Services (CAS), EBSCO, CABI, Ulrich Periodicals Directory, Electronic Journals Library, Crossref, ProQuest.
    • E-mail:
    • Twitter: @IJESD1
The University of Queensland, Australia
It is my honor to be the editor-in-chief of IJESD. The journal publishes good papers in the field of environmental science and development.
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IJESD 2013 Vol.4(1): 25-31 ISSN: 2010-0264
DOI: 10.7763/IJESD.2013.V4.297

Effects of Strain Type and Water Quality on Soil-Associated Escherichia coli

Daniel L. Gallagher, Kate Lago, Charles Hagedorn, and Andrea M. Dietrich
Abstract—Escherichia coli strains from gulls, chickens, humans, Canada geese, horses, deer, and swine exhibited nearly 25-fold differences in adhesion to kaolinite particles. Hydrophobicity and zeta potential were not correlated with adhesion. There were significant differences in adhesion patterns between avian strains and most mammalian strains, while there were no differences in adhesion patterns between domestic animal strains and wild strains, or between ruminant and non-ruminant mammals. Selected strains exhibited varying responses to changes in pH, sorbent type, ionic strength, and generational cell age. The results indicate that adhesion by different strains under varying environmental conditions is more variable than previously recognized and that sediment-adhered bacteria can represent a significant population. Such wide variation in adhesion behavior could affect the assessment of bacterial contamination in receiving waters, and has implications for field sampling techniques, laboratory culture conditions, and experimental design of water quality projects, including TMDL protocols.

Index TermsE. coli, fecal coliforms, water pollution, bacterial adhesion, microbial source tracking.

D. L. Gallagher, K. Lago and A. M. Dietrich are with the Department of Civil and Environmental Engineering, Virginia Tech, Blacksburg VA 24061-0246 (e-mail:;;
C. Hagedorn is with the Department of Crop and Soil Environmental Sciences, Virginia Tech, Blacksburg VA 24061 (email:


Cite:Daniel L. Gallagher, Kate Lago, Charles Hagedorn, and Andrea M. Dietrich, "Effects of Strain Type and Water Quality on Soil-Associated Escherichia coli," International Journal of Environmental Science and Development vol. 4, no. 1, pp. 25-31, 2013.

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