Abstract
Total coliform concentrations obtained from cruises of Lake Erie, conducted from the Canada Centre for Inland Waters between 1966 and 1970, have been analysed to determine the spatial and temporal distribution of total coliforms in the lake. Although year to year comparisons were made on a qualitative level due to the limitations in the data, some consistent seasonal features of the spatial distribution are evident. The location of zones of higher concentration have been attributed to proximity to large urban areas and lake currents. The contribution of fecal coliforms to the total coliform concentration has been examined with the conclusion that, at the low total coliform concentrations (⩽ 30 per 100 ml) observed in much of the lake, there is no relationship between the two concentrations but, over a broader range, fecal coliforms increase with total coliform concentrations and, at very high total coliform concentrations (⩾1000 per 100 ml), fecal coliforms are always present. The analysis demonstrates 1) the value of examining observed and fitted distributions to compare subsets of a large collection of data and 2) a clustering procedure which is generally applicable to data consisting of counts.
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References
Canada Centre for Inland Waters, 1966 to 1974. Lake Erie. Limnological Data Reports. Can. Cent. inld. Wat., Burlington, Ont.
Dutka, B. J., 1973. Coliforms are an inadequate index of water quality. J. envir. Health, 36: 39–46.
El-Shaarawi, A. H., S. R. Esterby & B. J. Dutka, 1981. Bacterial density in water determined by Poisson or negative binomial distributions. Appl. envir. Microbiol. 41: 107–116.
El-Shaarawi, A. H., 1982. Sampling strategy for estimating bacterial density in large lakes. Colloque, Strategies de prelevement d'echantillons representatifs en microbiologie (eaux, sédiments, surfaces). Metz, France, 13 Mai
Esterby, S. R. & A. H. El-Shaarawi, 1981. Characterization of spatial and temporal variability of water quality parameters. Summ. Conf. Presentations, Alexandria, Virginia. Environmetric 81: 156–157.
Fisher, R. A., H. G. Thornton & W. A. MacKenzie, 1922. The accuracy of the plating method of estimating the density of bacterial populations. Ann. appl. Biol. 9: 325–359.
Fisher, R. A., 1941. The negative binomial distribution. Ann. Eugen. 11: 182–187.
Hamblin, P. F., 1971. Circulation and water movement in Lake Erie. Dep. Energy, Mines Resour. Ottawa, Can. Sci. Ser. 7, 50 pp.
Health & Welfare Canada, 1979. Guidelines for Canadian Drinking Water Quality. Can. Gov. Publishing Cent., Supply & Services Can., Hull, Quebec.
Olivieri, V. P., 1982. Bacterial indicators of pollution. In W. O. Pipes (ed.), Bacterial Indicators of Pollution. CRC Press, Boca Raton, Fla, 147 pp.
Pipes, W. O., P. Ward & S. H. Ahn, 1977. Frequency distributions for coliform bacteria in water. J. am. Wat. Wks. Ass. 69:664–668.
Rao, S. S. & B. K. Burnison, 1976. Bacterial distributions in Lake Erie (1967, 1970). J. Fish. Res. Bd Can. 33: 574–580.
Reitz, R. D., 1973. Distribution of Phytoplankton and Coliform Bacteria in Lake Erie. Ohio envir. Prot. Agency, Div Surveillance
Simons, T. J., 1976. Continuous dynamical computations of water transports in Lake Erie for 1970. J. Fish. Res. Bd Can. 33:371–384.
Snedecor, G. W. & W. G. Cochran, 1967. Statistical Methods. The Iowa State University Press, Ames, Iowa, 593 pp.
Van Otterloo, H., P. Collins & B. J. Dutka, 1968. A bacteriological study of Lake Ontario, Lake Erie, Lake Huron and Lake Superior. Manuscript Rep. KR-68–3, Hlth. & Welf. Can.
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Esterby, S.R., El-Shaarawi, A.H. Coliform concentrations in Lake Erie — 1966 to 1970. Hydrobiologia 111, 133–146 (1984). https://doi.org/10.1007/BF00008626
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DOI: https://doi.org/10.1007/BF00008626