The Enterobacter are often found in the feces of man and
other warm blooded animals but have limited use as indicators
of fecal contamination of foods and water since they are also
often found as natural flora of non-fecal environments such
as water and plants. This study proposes a method...
High counts of fecal indicators, used to signal the potential presence of pathogens associated with untreated waste, result in the classification of water bodies throughout the United States as impaired. Nonpoint sources of unknown origin that contribute to fecal contamination make management of impaired waters challenging, as they are difficult...
Antimicrobial resistant Enterobacteriaceae might be introduced into dairy cows through the consumption of feeds and the microbes may eventually enter the human food supply. Thirty-two farms were selected at random from 43 commodity feeding dairy farms. Of the 32 farms selected, 12 farms agreed to participate in the study. In...
There have been several epidemiological studies linking alcohol
consumption to a decreased risk of contracting illness from foodborne
bacterial contamination. To study this phenomenon, we examined the
survival of Escherichia coli 0157:H7 and Salmonella typhimurium in grape
juice and wine and then designed a model stomach to investigate the effect...
Three studies were conducted related to the measurement and impact of
stream sediment fecal coliform (FC) bacteria on stream water quality. In part one
an enumeration technique for sediment FC was defined and statistically
characterized. This characterization necessitated the development of a sample
splitting mechanism, which was found to split...
We explain a new method of detecting non point source fecal contamination using a PCR based method called Touchdown Polymerase Chain Reaction (TD-PCR). Using genetic markers particular to general, ruminant and human Bacteroides- Prevotella genes, we identified presence in both fresh and salt water environments. Water samples from four sites...
Aquatic fecal contamination from non-point sources impairs environmental health and serves as a vehicle for transmission of waterborne disease, resulting in economic losses worldwide. Accurate methods of diagnosing fecal pollution and its source are needed to prevent human exposure, remediate pollution, and reduce economic impacts. In order to obtain this...
A documented case history of riparian grazing at Oregon State University's Soap Creek Ranch was conducted from 1999 to 2001. Impacts of four different riparian grazing treatments were evaluated. Emphasis was placed on investigating the relationship between riparian cattle use and water quality. Through a series of carefully designed and...