TY  - JOUR
U1  - Zeitschriftenartikel, wissenschaftlich - begutachtet (reviewed)
A1  - Weil, Micha
A1  - Wang, Haitao
A1  - Bengtsson, Mia
A1  - Köhn, Daniel
A1  - Günther, Anke
A1  - Jurasinski, Gerald
A1  - Couwenberg, John
A1  - Negassa, Wakene
A1  - Zak, Dominik
A1  - Urich, Tim
T1  - Long-Term Rewetting of Three Formerly Drained Peatlands Drives Congruent Compositional Changes in Pro- and Eukaryotic Soil Microbiomes through Environmental Filtering
JF  - Microorganisms
N2  - Drained peatlands are significant sources of the greenhouse gas (GHG) carbon dioxide.Rewetting is a proven strategy used to protect carbon stocks;  however, it can lead to increasedemissions of the potent GHG methane. The response to rewetting of soil microbiomes as drivers ofthese processes is poorly understood, as are the biotic and abiotic factors that control communitycomposition.   We  analyzed  the  pro-  and  eukaryotic  microbiomes  of  three  contrasting  pairs  ofminerotrophic fens subject to decade-long drainage and subsequent long-term rewetting. Abiotic soilproperties including moisture, dissolved organic matter, methane fluxes, and ecosystem respirationrates were also determined.   The composition of the microbiomes was fen-type-specific, but allrewetted sites showed higher abundances of anaerobic taxa compared to drained sites.  Based onmulti-variate  statistics  and  network  analyses,  we  identified  soil  moisture  as  a  major  driver  ofcommunity composition. Furthermore, salinity drove the separation between coastal and freshwaterfen communities. Methanogens were more than 10-fold more abundant in rewetted than in drainedsites, while their abundance was lowest in the coastal fen, likely due to competition with sulfatereducers. The microbiome compositions were reflected in methane fluxes from the sites. Our resultsshed light on the factors that structure fen microbiomes via environmental filtering.
KW  - -
KW  - peatland management
KW  - soil microbiome
KW  - methanogens
KW  - sulfate reducers
KW  - methanotrophic bacteria
KW  - greenhouse gas
KW  - methane
Y1  - 2020
UN  - https://nbn-resolving.org/urn:nbn:de:gbv:9-opus-36981
SN  - 2076-2607
SS  - 2076-2607
U6  - https://doi.org/https://doi.org/10.3390/microorganisms8040550
DO  - https://doi.org/https://doi.org/10.3390/microorganisms8040550
VL  - 8
IS  - 4
SP  - 550
PB  - MDPI
CY  - Basel
ER  -