Effect of sediment particle size and temperature on fecal bacteria mortality rates and the fecal coliform/fecal streptococci ratio

J. M. Howell, M. S. Coyne, P. L. Cornelius

Research output: Contribution to journalArticlepeer-review

161 Scopus citations

Abstract

Fecal coliform (FC) and fecal streptococci (FS) mortality rates were measured at three different temperatures an in three feces-amended sediments with different particle size in a laboratory study. In controlled conditions, using physiological saline to reduce cell death by osmotic shock, FC mortality rates exceeded FS mortality rates. These rates declined as sediment particle-size shrank and as temperature decreased. There was no interaction between these two factors in determining fecal bacteria persistence. The apparent half-lives of FC exceeded those of FS, even though mortality rates were higher. The FC/FS ratio was found to be influenced by temperature, the presence of sediment, and sediment particle size.

Original languageEnglish
Pages (from-to)1216-1220
Number of pages5
JournalJournal of Environmental Quality
Volume25
Issue number6
DOIs
StatePublished - 1996

ASJC Scopus subject areas

  • Environmental Engineering
  • Water Science and Technology
  • Waste Management and Disposal
  • Pollution
  • Management, Monitoring, Policy and Law

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