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Het OWA, het open archief van het Waterbouwkundig Laboratorium heeft tot doel alle vrij toegankelijke onderzoeksresultaten van dit instituut in digitale vorm aan te bieden. Op die manier wil het de zichtbaarheid, verspreiding en gebruik van deze onderzoeksresultaten, alsook de wetenschappelijke communicatie maximaal bevorderen.

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Shifts in the dominant populations of ammonia-oxidizing ß-subclass proteobacteria along the eutrophic Schelde estuary de Bie, M.J.M.; Speksnijder, A.G.C.L.; Kowalchuk, G.A.; Schuurman, T.; Zwart, G.; Stephen, J.R.; Diekmann, O.E.; Laanbroek, H.J. (2001). Shifts in the dominant populations of ammonia-oxidizing ß-subclass proteobacteria along the eutrophic Schelde estuary. Aquat. Microb. Ecol. 23: 225-236. http://dx.doi.org/10.3354/ame023225 In: Aquatic Microbial Ecology. Inter-Research: Oldendorf/Luhe. ISSN 0948-3055; e-ISSN 1616-1564, meer

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Beschikbaar in	Auteurs
VLIZ: Open access 114129 [ download pdf ]

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Trefwoorden

Chemical compounds > Nitrogen compounds > Ammonia Chemical reactions > Oxidation Microorganisms > Bacteria Water bodies > Coastal waters > Coastal landforms > Coastal inlets > Estuaries Nitrosomonas Winogradsky, 1892 [WoRMS] Marien/Kust; Brak water

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Auteurs		Top
de Bie, M.J.M., meer Speksnijder, A.G.C.L. Kowalchuk, G.A. Schuurman, T.	Zwart, G. Stephen, J.R. Diekmann, O.E. Laanbroek, H.J., meer

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Abstract

The community structure of ammonia-oxidizing bacteria of the β-subclass Proteobacteria was investigated with respect to environmental gradients along the Schelde, a eutrophic estuary system. A dominance of Nitrosomonas-like sequences was detected using molecular techniques targeting the 16S rRNA gene on 3 separate sampling dates, and different Nitrosomonas-like populations were most dominant at different locations along the estuary. The most frequently detected ammonia oxidizer-like sequences in the freshwater part of the estuary were associated with a sequence cluster previously designated as NitrosomonasNitrosomonas-like sequences. -like sequences represented only a small minority of those detected for all samples. The shift in dominant ammonia-oxidizer populations occurred in the estuarine region with the sharpest observed gradients in salinity, oxygen, and ammonia. These results provide evidence in support of the differential selection of physiologically distinct Nitrosomonas-like groups according to the environmental gradients encountered along the estuary

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