Availability of dissolved free glucose to heterotrophic microorganisms

In 5 different aquatic biotopes, widely differing in salinity as well as in degree of eutrophication and pollution, the concentration of dissolved free glucose was measured employing ion exchange chromatography of sugar borate complexes. The concentrations of glucose ranged from 4.99 to 9.63 mu g C...

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Bibliographic Details
Published in:Marine biology 1981-01, Vol.62 (2-3), p.209-216
Main Authors: Gocke, K, Dawson, R, Liebezeit, G
Format: Article
Language:English
Subjects:
Marine
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Summary:In 5 different aquatic biotopes, widely differing in salinity as well as in degree of eutrophication and pollution, the concentration of dissolved free glucose was measured employing ion exchange chromatography of sugar borate complexes. The concentrations of glucose ranged from 4.99 to 9.63 mu g C l super(-1). No correlation between the amounts of glucose and the trophic character of the biotope was evident. The parameter K sub(t) + S sub(n) (sum of the transport "constant" and the natural concentration of glucose) was determined using a microbiological method. Instead of being larger, the K sub(t) + S sub(n) values were smaller than the concentrations obtained chemically. It is concluded that using the concentration of the dissolved free substance obtained by chemical analysis to calculate the flux might be misleading.
ISSN:0025-3162
1432-1793
DOI:10.1007/BF00388184