Articles | Volume 13, issue 4
https://doi.org/10.5194/bg-13-1129-2016
https://doi.org/10.5194/bg-13-1129-2016
Research article
 | 
24 Feb 2016
Research article |  | 24 Feb 2016

Oxygen isotope fractionation during N2O production by soil denitrification

Dominika Lewicka-Szczebak, Jens Dyckmans, Jan Kaiser, Alina Marca, Jürgen Augustin, and Reinhard Well

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AR: Author's response | RR: Referee report | ED: Editor decision
ED: Publish subject to minor revisions (Editor review) (06 Jan 2016) by Yakov Kuzyakov
AR by Dominika Lewicka-Szczebak on behalf of the Authors (19 Jan 2016)
ED: Publish as is (05 Feb 2016) by Yakov Kuzyakov
AR by Dominika Lewicka-Szczebak on behalf of the Authors (08 Feb 2016)
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Short summary
Oxygen isotopic signatures of N2O are formed in complex multistep enzymatic reactions and depend on isotopic fractionation during enzymatic reduction of nitrate to N2O and on the oxygen isotope exchange with soil water. We propose a new method for quantification of oxygen isotope exchange, with simultaneous determination of oxygen isotopic signatures, to decipher the mechanism of oxygen isotopic fractionation. We indicate the differences between fractionation mechanisms by various pathways.
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