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Microbial biomass and community composition in boreal lake sediments
Department of Ecology and Genetics/Limnology, Evolutionary Biology Centre, Uppsala University, Uppsala, Sweden. (Climate Impacts Research Centre (CIRC))ORCID iD: 0000-0002-4949-9792
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2011 (English)In: Limnology and Oceanography, ISSN 0024-3590, E-ISSN 1939-5590, Vol. 56, no 2, p. 725-733Article in journal (Refereed) Published
Abstract [en]

We used phospholipid fatty acids (PLFA) to determine microbial biomass and community structure in the sediments of eight boreal lakes with different loadings of allochthonous organic carbon and total phosphorus (TP) in the water during the course of a year. The total concentration of PLFA, an estimate of the microbial biomass, depended more on TP, a proxy for pelagic primary production, but not on dissolved organic carbon, a proxy for terrestrial organic carbon input. The composition of PLFAs varied considerably over time, demonstrating seasonal dynamics in microbial community composition. When PLFA profiles in all lakes and seasons are compared, community composition is more similar within season than within lakes.

Place, publisher, year, edition, pages
Waco: American Society of Limnology and Oceanography, 2011. Vol. 56, no 2, p. 725-733
Keywords [en]
methane oxidizing bacteria, phospholipid fatty acids, organic matter, temperate lakes, seasonal variation, growth efficiency, isotope analysis, carbon, metabolism, ecology
National Category
Oceanography, Hydrology and Water Resources
Identifiers
URN: urn:nbn:se:umu:diva-130890DOI: 10.4319/lo.2011.56.2.0725ISI: 000290677800027OAI: oai:DiVA.org:umu-130890DiVA, id: diva2:1070193
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765BGTimes Cited:0Cited References Count:46

Available from: 2017-01-31 Created: 2017-01-31 Last updated: 2018-12-19Bibliographically approved

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Gudasz, Cristian

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