Biogeosciences
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Articles | Volume 14, issue 5
Articles | Volume 14, issue 5
https://doi.org/10.5194/bg-14-1111-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/bg-14-1111-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
Articles | Volume 14, issue 5
Research article
 | 
09 Mar 2017
Research article |  | 09 Mar 2017

Symbiosis revisited: phosphorus and acid buffering stimulate N2 fixation but not Sphagnum growth

Eva van den Elzen, Martine A. R. Kox, Sarah F. Harpenslager, Geert Hensgens, Christian Fritz, Mike S. M. Jetten, Katharina F. Ettwig, and Leon P. M. Lamers

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Short summary
Peatlands are important because they sequester large amounts of carbon, for which nitrogen is needed. In peatlands dominated by peat mosses, atmospheric nitrogen is fixed by associated microorganisms. We here show for the first time experimentally that phosphorus availability and acid buffering, both showing large variations among peatlands, can explain the strong differences reported for nitrogen fixation. This improves our understanding of peatland functioning in relation to global change.
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