Articles | Volume 17, issue 2
Biogeosciences, 17, 499–514, 2020
Biogeosciences, 17, 499–514, 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.

Data sets

FTIR, CuO lignin, and bulk decomposition data of a 75-day anoxic Phragmites australis litter decomposition experiment in soil substrates from three northeast German wetlands H. Reuter, J. Gensel, M. Elvert, and D. Zak

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.
Final-revised paper