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Applied and Environmental Microbiology, July 2000, p. 3078-3082, Vol. 66, No. 7
0099-2240/00/$04.00+0
Copyright © 2000, American Society for Microbiology. All rights reserved.

Biofilm Community Structure in Polluted Rivers: Abundance of Dominant Phylogenetic Groups over a Complete Annual Cycle

I. H. M. Brümmer, W. Fehr, and I. Wagner-Döbler*

Division of Microbiology, National Research Centre for Biotechnology (GBF), D-38124 Braunschweig, Germany

Received 22 December 1999/Accepted 5 April 2000

The seasonal dynamics of river biofilm communities in two German rivers, the Elbe and one of its tributaries, the Spittelwasser, were investigated for the first time by using fluorescence in situ hybridization and a standardized biofilm sampling procedure. We show the importance of members of the beta  subclass of the class Proteobacteria, which formed the largest single group in the massively polluted Spittelwasser at all times. Clear seasonal peaks of abundance were observed for the planctomycetes and the Cytophaga-Flavobacterium cluster.


* Corresponding author. Mailing address: GBF, Mascheroder Weg 1, D-38124 Braunschweig, Germany. Phone: 49-531-6181 408. Fax: 49-531-6181 411. E-mail: iwd{at}gbf.de.


Applied and Environmental Microbiology, July 2000, p. 3078-3082, Vol. 66, No. 7
0099-2240/00/$04.00+0
Copyright © 2000, American Society for Microbiology. All rights reserved.



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