Spatial and temporal variation in denitrification and in the denitrifier community in a boreal lake

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dc.contributor.author Rissanen, Antti Juhani
dc.contributor.author Tiirola, Marja
dc.contributor.author Ojala, Anne
dc.date.accessioned 2012-11-02T10:24:46Z
dc.date.available 2012-11-02T10:24:46Z
dc.date.issued 2011
dc.identifier.citation Rissanen, A., Tiirola, M., & Ojala, A. (2011). Spatial and temporal variation in denitrification and in the denitrifier community in a boreal lake. Aquatic Microbial Ecology, 64 (1), 27-40. doi:10.3354/ame01506
dc.identifier.issn 0948-3055
dc.identifier.uri http://hdl.handle.net/123456789/40158
dc.description.abstract We investigated the spatial and temporal variation in denitrification rates (isotope-­pairing technique, IPT) and in the denitrifier community (examination of gene nirK by denaturing-gradient gel electrophoresis [DGGE] of microbial DNA) in the sediments of a boreal, clear-water, eutrophic lake using samples collected from shallow littoral, deep littoral and shallow profundal ­sediments during early summer, mid-summer, autumn and winter. The measured denitrification rates (44 to 613 µmol N m−² d−¹) are among the lowest ever reported from lacustrine sediments. Denitri­fi­cation rates varied both spatially and temporally, being highest in the profundal zone during mid-­summer and in the littoral zones during winter. Correlation analyses indicated that these variations were due to variations in the concentrations of nitrate and oxygen in the water overlying the sediment. The structure of the denitrifier community was temporally extremely stable and differed only slightly between the sites. Distance-based linear model (DISTLM) analysis indicated that the observed variation was probably due mainly to variations in the content of organic matter, and in the porosity, of the sediment. The structure of the denitrifier community and the denitrifying activities were uncoupled. fi
dc.language.iso eng
dc.publisher Inter Research
dc.relation.ispartofseries Aquatic Microbial Ecology
dc.relation.uri http://www.int-res.com/journals/ame/ame-home/
dc.rights © 2011 Inter-Research
dc.subject.other denitrifikaatio fi
dc.subject.other järvi fi
dc.subject.other sedimentti fi
dc.subject.other nirK fi
dc.subject.other bakteeridiversiteetti fi
dc.subject.other boreaalinen fi
dc.subject.other denitrification en
dc.subject.other lake en
dc.subject.other sediment en
dc.subject.other nirK en
dc.subject.other bacterial diversity en
dc.subject.other boreal en
dc.title Spatial and temporal variation in denitrification and in the denitrifier community in a boreal lake
dc.type Article en
dc.identifier.urn URN:NBN:fi:jyu-201211022844
dc.subject.kota 118
dc.contributor.laitos Department of Biological and Environmental Science en
dc.contributor.laitos Bio- ja ympäristötieteiden laitos fi
dc.type.uri http://purl.org/eprint/type/JournalArticle
dc.identifier.doi 10.3354/ame01506
eprint.status http://purl.org/eprint/type/status/PeerReviewed

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