Articles | Volume 17, issue 2
Biogeosciences, 17, 499–514, 2020
https://doi.org/10.5194/bg-17-499-2020
Biogeosciences, 17, 499–514, 2020
https://doi.org/10.5194/bg-17-499-2020

Research article 31 Jan 2020

Research article | 31 Jan 2020

Evidence for preferential protein depolymerization in wetland soils in response to external nitrogen availability provided by a novel FTIR routine

Hendrik Reuter et al.

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AR: Author's response | RR: Referee report | ED: Editor decision
ED: Publish subject to minor revisions (review by editor) (23 Nov 2019) by Steven Bouillon
AR by Hendrik Reuter on behalf of the Authors (04 Dec 2019)  Author's response    Manuscript
ED: Publish as is (29 Dec 2019) by Steven Bouillon
AR by Hendrik Reuter on behalf of the Authors (29 Dec 2019)  Author's response    Manuscript
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Short summary
Using infrared spectroscopy, we developed a routine to disentangle microbial nitrogen (N) and plant N in decomposed litter. In a decomposition experiment in three wetland soils, this routine revealed preferential protein depolymerization as a decomposition-site-dependent parameter, unaffected by variations in initial litter N content. In Sphagnum peat, preferential protein depolymerization led to a N depletion of still-unprocessed litter tissue, i.e., a gradual loss of litter quality.
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