Complex controls on nitrous oxide flux across a large-elevation gradient in the tropical Peruvian Andes

Diem, Torsten; Morley, Nicholas J.; Ccahuana Quispe, Adan Julian; Huaraca Quispe, Lidia Priscila; Baggs, Elizabeth M.; Meir, Patrick; Richards, Mark I. A.; Smith, Pete; Teh, Yit Arn

doi:https://doi.org/10.5194/bg-14-5077-2017

Articles | Volume 14, issue 22

https://doi.org/10.5194/bg-14-5077-2017

© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/bg-14-5077-2017

© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 14, issue 22

Research article

|

15 Nov 2017

Research article |

| 15 Nov 2017

Complex controls on nitrous oxide flux across a large-elevation gradient in the tropical Peruvian Andes

Torsten Diem, Nicholas J. Morley, Adan Julian Ccahuana Quispe, Lidia Priscila Huaraca Quispe, Elizabeth M. Baggs, Patrick Meir, Mark I. A. Richards, Pete Smith, and Yit Arn Teh

Supplement

https://doi.org/10.5194/bg-14-5077-2017-supplement

Data sets

NERC Project: Are tropical uplands regional hotspots for methane and nitrous oxide?: in-situ ground based atmospheric flux measurements and model output T. Diem, S. P. Jones, E. Baggs, P. Smith, P. Meir, and Y. A. Teh http://catalogue.ceda.ac.uk/uuid/93fdb48b713b4dbc93a28d695771312d

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Short summary

Montane ecosystems in the southern Peruvian Andes were atmospheric sources of the greenhouse gas nitrous oxide, exceeding prior emissions estimates from bottom-up process models. Nitrous oxide flux originated primarily from nitrate reduction. Nitrous oxide fluxes showed an inverse trend with elevation, and only weak evidence of seasonal variability. Nitrous oxide fluxes were influenced by the availability of nitrate and soil moisture content, but were not predicted by inputs of labile carbon.