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John F. Griffith

Researcher at Southern California Coastal Water Research Project

Publications -  108
Citations -  5680

John F. Griffith is an academic researcher from Southern California Coastal Water Research Project. The author has contributed to research in topics: Fecal coliform & Indicator bacteria. The author has an hindex of 42, co-authored 108 publications receiving 4806 citations. Previous affiliations of John F. Griffith include Duke University & University of Virginia.

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Journal ArticleDOI

Water quality indicators and the risk of illness at beaches with nonpoint sources of fecal contamination.

TL;DR: Traditional fecal indicators currently used to monitor these beaches were not associated with health risks, and a need for alternative indicators of water quality where nonpoint sources are dominant fecal contributors is suggested.
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Performance of forty-one microbial source tracking methods: a twenty-seven lab evaluation study.

TL;DR: The most sensitive and specific MST methodologies, based on an analysis of presence/absence of each marker in target and non-target fecal samples, were HF183 endpoint and HF183SYBR (human), CF193 and Rum2Bac (ruminant), CowM2 and CowM3 (cow), BacCan (dog), Gull2SYBR and LeeSeaGull (gull), and Pig2B Bac (pig).
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Evaluation of microbial source tracking methods using mixed fecal sources in aqueous test samples.

TL;DR: No MST method that was tested predicted the source material in the blind samples perfectly, and library-based isolate methods correctly identified the dominant source in most samples, but also had frequent false positives in which fecal sources not in the samples were incorrectly identified as being present.