Skip to main content
Article
Spatial and Temporal Patterns of Campylobacter Contamination Underlying Public Health Risk in the Taieri River, New Zealand
Journal of Environmental Quality
  • Rebekah Eyles
  • Dev Niyogi, Missouri University of Science and Technology
  • George Benwell
  • Philip Weinstein
  • Colin R. Townsend
Abstract

New Zealand's freshwater ecosystems are subject to microbial contamination from a predominantly agricultural landscape. This study examines the spatial and temporal distribution of the human pathogen Campylobacter in the lower Taieri River, South Island (New Zealand). Enumeration of thermophilic Campylobacter from river samples was performed using a most probable number (MPN) method. Seasonal variation in Campylobacter levels was evident, with higher median levels detected in summer, when human exposure through recreational water use is maximal. Campylobacter levels varied significantly among the 10 sampling sites, increasing below a major tributary entering the river and then showing a downstream decrease. These changes probably resulted from inputs from adjacent farms and instream Campylobacter losses (settling, death). Two main peaks in the flux of Campylobacter were observed, one in winter and one in summer. A decrease in notified cases of campylobacteriosis in the human population was observed when levels of Campylobacter at the main recreational bathing site on the river were low. Continuing land use change and intensification in New Zealand may lead to further increases in microbial contamination of freshwaters, and an associated increase in waterborne enteric diseases such as campylobacteriosis.

Department(s)
Biological Sciences
Geographic Coverage
Taieri River, New Zealand
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2003 American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America, All rights reserved.
Publication Date
9-1-2003
Publication Date
01 Sep 2003
PubMed ID
14535325
Disciplines
Geolocate this work
(-40.900557, 174.885971)
Citation Information
Rebekah Eyles, Dev Niyogi, George Benwell, Philip Weinstein, et al.. "Spatial and Temporal Patterns of Campylobacter Contamination Underlying Public Health Risk in the Taieri River, New Zealand" Journal of Environmental Quality Vol. 32 Iss. 5 (2003) p. 1820 - 1828 ISSN: 0047-2425
Available at: http://works.bepress.com/dev-niyogi/19/