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Responses of Fecal Coliform in Streamwater to Four Grazing Strategies
Author
Tiedemann, A. R.
Higgins, D. A.
Quigle, Quigley T. M.
Sanderson, H. R.
Marx, D. B.
Publisher
Society for Range Management
Publication Year
1987-07-01
Body

Concentrations and loadings (output, number day-1 km-2) of fecal coliform (FC) indicator bacteria were measured from 1979 through 1984 in streamflow from 13 forested watersheds under the following range management strategies: (A) no grazing; (B) grazing without management for livestock distribution; (C) grazing with management to obtain livestock distribution, and (D) grazing with management to obtain livestock distribution and cultural practices to increase forage. Both FC concentrations (number/100 ml) and instantaneous loadings differed significantly among strategies, seasons, and water years. Differences among strategies for mean concentrations were A<C=B<D. For instantaneous loadings, significant differences were A<C, B or D; and C<D. FC concentrations were the same for winter and for snowmelt runoff seasons but concentrations of both were significantly lower than during the summer period. Loadings were different for each season with winter<summer<snowmelt runoff. A definite relationship was established between the presence of cattle on the pastures and FC concentrations. Elevated FC counts in strategy D watersheds and loadings in excess of 10^4 organisms day-1 km-2 in the winter season provide evidence that organisms live into and through the winter period in animal feces, sediment, and soil. Results provide evidence that livestock removal may not provide an immediate solution to elevated levels of FC in streamwater. This material was digitized as part of a cooperative project between the Society for Range Management and the University of Arizona Libraries. The Journal of Range Management archives are made available by the Society for Range Management and the University of Arizona Libraries. Contact lbry-journals@email.arizona.edu for further information. Migrated from OJS platform August 2020

Language
en
Resource Type
Text
Document Type
Journal Issue/Article
Digital Object Identifier (DOI)
10.2307/3898729
Additional Information
Tiedemann, A. R., Higgins, D. A., Quigle, Q. T., Sanderson, H. R., & Marx, D. B. (1987). Responses of fecal coliform in streamwater to four grazing strategies. Journal of Range Management, 40(4), 322-329.
ISSN
0022-409X
OAI Identifier
oai:repository.arizona.edu:10150/645225
Journal Volume
40
Journal Number
4
Journal Pages
322-329
Collection
Rangeland Ecology & Management (REM)
Journal Name
Journal of Range Management
Keywords
Escherichia coli
water pollution
coliform bacteria
grant county, oregon
streams
watersheds
feces
Oregon
grazing intensity
cattle
water quality
grazing