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dc.contributor.authorKarhunen, Jatta
dc.contributor.authorArvola, Lauri
dc.contributor.authorPeura, Sari
dc.contributor.authorTiirola, Marja
dc.identifier.citationKarhunen, J., Arvola, L., Peura, S., & Tiirola, M. (2013). Green sulphur bacteria as a component of the photosynthetic plankton community in small dimictic humic lakes with an anoxic hypolimnion. Aquatic Microbial Ecology, 68 (3), 267-272. doi:10.3354/ame01620
dc.description.abstractHigh bacteriochlorophyll (BChl) concentrations in the anoxic water layers of some humic lakes have indicated that green sulphur bacteria (GSB) may be ecologically significant. The abundance and spatial distribution of GSB were therefore addressed in 13 small humic lakes using fragment analysis and sequencing of PCR-amplified 16S rRNA genes. GSB were detected from lakes where the photosynthetically active radiation was at least 1.1 µE m-2 s-1 at the oxic-anoxic boundary layer. In these lakes, 13 to 42% of the 16S rRNA gene sequences of the anoxic water column were assigned to GSB. The spatial distribution of GSB was tightly correlated with the spectrophotometrically measured BChl concentration during the summer season. Maximum BChl concentrations were observed in the uppermost part of the anoxic water layer, covering most of the chlorophyll pigment in these lakes. The GSB of the humic lakes typically belonged to a phylogenetically homogenous group closely related to Chlorobium
dc.relation.ispartofseriesAquatic Microbial Ecology
dc.subject.otherChlorobium sp
dc.subject.othergreen sulphur bacteria
dc.subject.otherHumic lake
dc.subject.otherBoreal lake
dc.titleGreen sulphur bacteria as a component of the photosynthetic plankton community in small dimictic humic lakes with an anoxic hypolimnionfi
dc.typeVertaisarvioitu alkuperäisartikkeli tieteellisessä aikakauslehdessäfi
dc.typeJournal article; Peer-reviewed
dc.contributor.laitosBio- ja ympäristötieteiden laitosfi
dc.contributor.laitosDepartment of Biological and Enviromental Scienceen
dc.type.coarjournal article
dc.rights.copyright© 2013 Inter-Research

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