Bacterial community structure in lake sediments of microcosms contaminated with nonylphenol |
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| Authors: | Miriam Jontofsohn Gerd Pfister Gabriele Severin Karl-Werner Schramm Anton Hartmann Michael Schloter |
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| Institution: | 1. GSF — National Research Center for Environment and Health, Institute of Soil Ecology, Ingolst?dter Landstr.l, D-85764, Neuherberg, Germany
2. GSF — National Research Center for Environment and Health, Institute of Ecological Chemistry, Ingolst?dter Landstr.l, D-85764, Neuherberg, Germany
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| Abstract: | 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 showeda 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. |
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| Keywords: | 16S rRNA-fingerprint ecotoxicology microbial community structure nonylphenol |
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