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dénombrements bactériens

Annales de Limnologie - International Journal of Limnology (1)

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Hyporheic biofilm development on artificial substrata, as a tool for assessing trophic status of aquatic systems : first results
C. Claret
Journal:

Annales de Limnologie - International Journal of Limnology / Volume 34 / Issue 2 / June 1998

Published online by Cambridge University Press:

01 February 2009, pp. 119-128

Print publication:

June 1998
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To determine the relationship between biofilm characteristics and organic nutrient content, we investigated the development of hyporheic biofilms on artificial substrata (glass slides) in the early phase of bacterial colonization (one week) in contrasting river habitats with significantly different concentrations of dissolved organic carbon (DOC) and biodegradable and refractory DOC (BDOC and RDOC). Results suggest that the quality of DOC (i.e. BDOC versus RDOC content) controlled electron -transport system (ETS)-active bacterial abundances early in colonization, while DOC concentrations limit biofilm development onlyin the latter phase of colonization.