Articles | Volume 7, issue 1
https://doi.org/10.5194/soil-7-83-2021
https://doi.org/10.5194/soil-7-83-2021
Original research article
 | 
30 Mar 2021
Original research article |  | 30 Mar 2021

Stable isotope signatures of soil nitrogen on an environmental–geomorphic gradient within the Congo Basin

Simon Baumgartner, Marijn Bauters, Matti Barthel, Travis W. Drake, Landry C. Ntaboba, Basile M. Bazirake, Johan Six, Pascal Boeckx, and Kristof Van Oost

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AR: Author's response | RR: Referee report | ED: Editor decision
ED: Revision (22 Jan 2021) by Peter Finke
AR by Simon Baumgartner on behalf of the Authors (22 Feb 2021)  Author's response   Author's tracked changes   Manuscript 
ED: Publish subject to technical corrections (24 Feb 2021) by Peter Finke
ED: Publish subject to technical corrections (26 Feb 2021) by Jorge Mataix-Solera (Executive editor)
AR by Simon Baumgartner on behalf of the Authors (01 Mar 2021)  Manuscript 
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Short summary
We compared stable isotope signatures of soil profiles in different forest ecosystems within the Congo Basin to assess ecosystem-level differences in N cycling, and we examined the local effect of topography on the isotopic signature of soil N. Soil δ15N profiles indicated that the N cycling in in the montane forest is more closed, whereas the lowland forest and Miombo woodland experienced a more open N cycle. Topography only alters soil δ15N values in forests with high erosional forces.