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Bacteriology of fresh water: I. Distribution of bacteria in English lakes

Published online by Cambridge University Press:  15 May 2009

C. B. Taylor
C. B. Taylor
Affiliation:
Freshwater Biological Association, Wray Castle, Ambleside, Westmorland
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1. The vertical distribution of bacteria has been determined in Windermere (north and south basins), Thirlmere, and Esthwaite Water; these lakes are oligotrophic bodies of water in the English Lake District. Studies on the horizontal distribution of bacteria have been confined to the north basin of Windermere.

2. Bacterial counts at the mouth of the main river flowing into Windermere were about 200 times as great as counts in samples of water from the lake at a distance of 200 m. offshore from the point of entry of the river. In general there was a gradual decrease in numbers of bacteria with increasing distance from this 200 m. point but such decreases were relatively insignificant.

3. During the winter period of circulation of water in the lakes numbers of bacteria were approximately the same at all depths on any one occasion. When the water in the lakes was stratified, however, the numbers of bacteria decreased with increasing depth in the epilimnion, but below the thermocline the numbers were approximately the same at all depths, except in the layer of water immediately above the mud where the bacterial population was somewhat greater.

4. Progressive depletion of dissolved oxygen with depth in the hypolimnion during the summer months did not stimulate the growth of anaerobic bacteria, nor was the degree of depletion related to numbers of bacteria.

5. Periodic fluctuations in numbers of bacteria which took place at all depths were found to be directly correlated with the amount of rain which had fallen in the drainage area during the week before the samples were taken. The correlation is most significant during the winter months, possibly on account of the high rainfall during those months. During the summer the relation was most marked in the upper layers of Windermere north basin, but in the lower layers to which rain had no access there was no correlation. In the south basin of Windermere, where the bacterial population has become more stable, numbers were not affected by the relatively small summer rainfall. There are indications that short early summer fluctuations in numbers of bacteria unrelated to rainfall may be related to maxima in algal growth.

6. Changes in the temperature and concentration of inorganic substances in the lake waters have not shown any relation to fluctuations in the bacterial population, nor has any noticeable bacteriostatic effect of sunlight been apparent.

Type
Research Article
Information
Journal of Hygiene , Volume 40 , Issue 6 , December 1940 , pp. 616 - 640
Copyright
Copyright © Cambridge University Press 1940

References

REFERENCES

Bere, R. (1933). Numbers of bacteria in inland lakes of Wisconsin as shown by the direct microscopic method. Int. Rev. Hydrobiol. 29, 248.Google Scholar
Cholodny, N. (1929). Zur Methodik der quantitativen Erforschung des bakteriellen Planktons. Zbl. Bakt. (2), 77, 179–93.Google Scholar
Düggeli, M. (1939). Ergebnisse bei der bakteriologischen Untersuchung der dem Stausee Wäggital enthobenen Wasser und Schlammproben. Z. Hydrol. 8, 207.Google Scholar
Fisher, R. A. (1936). Statistical Methods for Research Workers, 6th Ed. London: Oliver and Boyd.Google Scholar
Fred, E. B., Wilson, F. C. & Davenport, A. (1924). The distribution and significance of bacteria in Lake Mendota. Ecology, 5, 322.Google Scholar
Graham, V. E. & Young, R. T. (1934). A bacteriological study of Flathead Lake, Montana. Ecology, 15, 101.CrossRefGoogle Scholar
Henrici, A. T. (1938). Studies of freshwater bacteria. IV. Seasonal fluctuations of lake bacteria in relation to plankton production. J. Bact. 35, 129.Google Scholar
Jerusalimski, N. D. (1932). Ein Versuch die Bakterienpopulation des Moskauflusses und seiner Zurflüsse nach der direkten Methode der Bakterioskopie zu untersuchen. Microbiology, 1, 174.Google Scholar
Kleiber, A. (1894). Qualitative und quantitative bakteriologische Untersuchungen des Zürichseewassers. Inaug. Diss. Zürich (quoted by Fred, Wilson & Davenport).Google Scholar
Kusnetzow, S. I. & Karzinkin, G. S. (1931). Direct method for the quantitative study of bacteria in water and some considerations on the causes which produce a zone of oxygen-minimum in Lake Gluboje. Zbl. Bakt. (2), 83, 169.Google Scholar
Minder, L. (1920). Zur Hydrophysik des Zürich- und Walensees, nebst Beitrag zur Hydrochemie und Hydrobakteriologie des Zürichsees. Arch. Hydrobiol. Plankt. 12, 122.Google Scholar
Minder, L. (1927). Über den Bakteriengehalt des Zürichsees. Vjschr.naturf.Ges. Zürich, 72, 354.Google Scholar
Mortimer, C. H. (1938). Unpublished data.Google Scholar
Mortimer, C. H. (1939). Unpublished data.Google Scholar
Pfenniger, A. (1902). Beiträge zur Biologie des Zürichsees. Z. Gewasserk. 6, 321.Google Scholar
Rasumow, A. S. (1932). Die direkte Methode der Zählung der Bakterien im Wasser und ihre Vergleichung mit der Koch'schen Plattenkultur-Methode. Microbiology, 1, 145.Google Scholar
Ruttner, F. (1932). Anhang zu “Beiträge zur Bakteriologie der Lünzer Seen.” Int. Rev. Hydrobiol. 26, 431.Google Scholar
Stark, W. H. & McCoy, E. (1938). Distribution of bacteria in certain lakes of northern Wisconsin. Zbl. Bakt. (2), 98, 201.Google Scholar
Taylor, C. B. (1939). Bacteria of lakes and impounded waters. Brit. Waterwks Ass. Off. Circ. 21, 617.Google Scholar
Water Pollution Research Board (1939). Annual Report for the year ended 30 June 1939. London: H.M. Stationery Office.Google Scholar