Fractionation of stable carbon isotopes during acetate consumption by methanogenic and sulfidogenic microbial communities in rice paddy soils and lake sediments
Abstract CH 4 CO 2 CO 2 ε CH 4 CO 2 CH 3 F), an inhibitor of aceticlastic methanogenesis. Under methanogenic conditions, values of ε ac - 21 ‰ to - 17 ‰ but higher in the lake sediment from the southwestern basin (- 11 ‰). Under sulfidogenic conditions ε ac - 26 ‰ to - 19 ‰), especially when aceticlastic methanogenesis was inhibited. Again, ε ac - 18 ‰ to - 14 ‰). Determination of ε CH 4 13 C in CH 4 - 37 ‰ to - 27 ‰) than from the depletion of 13 C in acetate (- 21 ‰ to - 17 ‰), especially when acetate degradation was measured in buffer suspensions. The microbial communities were characterized by sequencing the bacterial 16S rRNA (ribosomal ribonucleic acid) genes as well as the methanogenic mcrA and sulfidogenic dsrB genes. The microbial communities were quite different between lake sediments and paddy soils but were similar in the sediments of the two lake basins and in the soils from Vercelli and the IRRI, and they were similar after preincubation without and with addition of sulfate (gypsum). The different microbial compositions could hardly serve for the prediction of the magnitude of enrichment factors.
- Standort
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Deutsche Nationalbibliothek Frankfurt am Main
- Umfang
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Online-Ressource
- Sprache
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Englisch
- Erschienen in
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Fractionation of stable carbon isotopes during acetate consumption by methanogenic and sulfidogenic microbial communities in rice paddy soils and lake sediments ; volume:18 ; number:24 ; year:2021 ; pages:6533-6546 ; extent:14
Biogeosciences ; 18, Heft 24 (2021), 6533-6546 (gesamt 14)
- Urheber
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Conrad, Ralf
Liu, Pengfei
Claus, Peter
- DOI
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10.5194/bg-18-6533-2021
- URN
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urn:nbn:de:101:1-2021122304183304728890
- Rechteinformation
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Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Letzte Aktualisierung
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15.08.2025, 07:23 MESZ
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Beteiligte
- Conrad, Ralf
- Liu, Pengfei
- Claus, Peter
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