Articles | Volume 18, issue 13
Biogeosciences, 18, 4021–4037, 2021
https://doi.org/10.5194/bg-18-4021-2021
Biogeosciences, 18, 4021–4037, 2021
https://doi.org/10.5194/bg-18-4021-2021

Research article 06 Jul 2021

Research article | 06 Jul 2021

Organic phosphorus cycling may control grassland responses to nitrogen deposition: a long-term field manipulation and modelling study

Christopher R. Taylor et al.

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Short summary
We used experimental data to model two phosphorus-limited grasslands and investigated their response to nitrogen (N) deposition. Greater uptake of organic P facilitated a positive response to N deposition, stimulating growth and soil carbon storage. Where organic P access was less, N deposition exacerbated P demand and reduced plant C input to the soil. This caused more C to be released into the atmosphere than is taken in, reducing the climate-mitigation capacity of the modelled grassland.
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