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BG | Articles | Volume 15, issue 12
Biogeosciences, 15, 3873–3882, 2018
https://doi.org/10.5194/bg-15-3873-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
Biogeosciences, 15, 3873–3882, 2018
https://doi.org/10.5194/bg-15-3873-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 27 Jun 2018

Research article | 27 Jun 2018

Estimation of isotope variation of N2O during denitrification by Pseudomonas aureofaciens and Pseudomonas chlororaphis: implications for N2O source apportionment

Joshua A. Haslun et al.

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Cited articles

Anderson, I. C., Poth, M., Homstead, J., and Burdige, D.: A comparison of NO and N2O production by the autotrophic nitrifier Nitrosomonas europaea and the heterotrophic nitrifier Alcaligenes faecalis, Appl. Environ. Microbiol., 59, 3525–3533, 1993. 
Barford, C. C., Montoya, J. P., and Altabet, M. A.: Steady-State Nitrogen Isotope Effects of N2 and N2O Production in Paracoccus denitrificans, Appl. Environ. Microbiol., 65, 989–994, 1999. 
Baty, F., Ritz, C., Charles, S., Brutsche, M., Flandrois, J.-P., and Delignette-Muller, M.-L.: A Toolbox for Nonlinear Regression in R?: The Package nlstools, J. Stat. Softw., 66, 1–21, https://doi.org/10.18637/jss.v066.i05, 2015. 
Coplen, T. B.: Guidelines and recommended terms for expression of stable-isotope-ratio and gas-ratio measurement results, Rapid Commun. Mass Sp., 25, 2538–2560, https://doi.org/10.1002/rcm.5129, 2011. 
Davidson, E. A. and Keller, M.: Isotopic variability of N2O emissions from tropical forest soils, Global Biogeochem. Cy., 14, 525–535, 2000. 
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N2O δ15N and δ18O values changed non-linearly during in vitro N2O production by bacterial denitrification of NO3, an argument against their use in N2O apportionment. We present a novel approach for describing non-linear isotopic behaviour, which may be applied to other multi-step reactions. We also show that the intramolecular distribution of 15N in N2O, used to apportion N2O emissions to denitrification and nitrification, is unaffected by electron donor source and electron donor concentration.
N2O δ15N and δ18O values changed non-linearly during in vitro N2O production by bacterial...
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