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Research Articles
Bacterial Community Structure in Lake Sediments of Microcosms Contaminated with Nonylphenol
Miriam Jontofsohn; Gerd Pfister; Gabriele Severin; Karl-Werner Schramm; Anton Hartmann; Michael Schloter
Corresponding author:: Michael Schloter, GSF - National Research Center for Environment and Health, Institute of Soil Ecology, Ingolstädter Landstr.1, D-85764 Neuherberg, Germany; e-mail: schloter@gsf.de
DOI: http://dx.doi.org/10.1065/jss2002.07.052 --- The impact of nonylphenol, an estrogenic degradation
product of alkylphenol polyethoxylates, on the bacterial
community structure in contaminated sediments of aquatic microcosms
was investigated over a period of 20 weeks using a
16S rDNA-based molecular phylogenetic approach. All microcosms
showed a strong seasonal fluctuation of the dominant as
well as the active bacterial microflora independent of their degree
of contamination with nonylphenol. These changes were
correlated with the dynamic of the total organic carbon content
(TOC), ranging from 4–39 g/kg sediment dry weight and the
redox potential in the sediment. Even at the highest observed
nonylphenol concentration (3.4 mg/kg sediment dry weight) the
bacterial community structure was mostly unchanged. | | Keywords: 16S rRNA-fingerprint; ecotoxicology; microbial community structure; nonylphenol |
2 JSS (4) 211-215 (2002)
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