The dynamics of faecal indicator organisms in a temperate river during storm conditions

Nnane, D.E., Ebdon, J.E. and Taylor, H.D. (2012) The dynamics of faecal indicator organisms in a temperate river during storm conditions Journal of Water and Climate Change, 3 (2). pp. 139-150. ISSN 2040-2244

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Abstract

Greater incidence of storm events, which can lead to greater contamination of surface waters by human and animal faeces, are a predicted feature of climate change in parts of Europe and elsewhere. The aim of theis study was to combine the use of a novel quantitative microbial source tracking (QMST) method with established water quality monitoring procedures during an intense summer storm event in a rural UK catchment, to establish dominant sources of faecal pollution. One-litre grab samples of river water were collected every 12 h for a period of seven days from three sampling sites on the Bevern Stream (a tributary of the Sussex Ouse). All samples were tested for a range of chemophysical and bacteriological parameters, and also for phage-lysis of a human specific strain of Bacteroides spp. GB-124. Presumptive levels of Escherichia coil and intestinal enterococci were statistically significant (p-value <0.05) higher during the storm event, compared with dry weather conditions. Low recorded levels of phages of Bacteroides GB-124 during the storm event, compared with dry weather conditions, support the hypothesis that the predominant sources of faecal material in the river during the storm event were non-human. Using traditional faecal indicator bacteria and a QMST marker during storm events may improve human health protection protocols

Item Type:Journal article
Subjects:C000 Biological and Biomedical Sciences > C500 Microbiology
F000 Physical Sciences > F800 Physical Geography and Environmental Sciences > F850 Environmental Sciences
DOI (a stable link to the resource):10.2166/wcc.2012.145
Faculties:Faculty of Science and Engineering > School of Environment and Technology > Ecology, Landscape and Pollution Management
Faculty of Science and Engineering > School of Environment and Technology
ID Code:9270
Deposited By:editor environment
Deposited On:27 Apr 2012 10:47
Last Modified:03 May 2012 08:23

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