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Fiedler, S.* ; Höll, S.* ; Freibauer, A.* ; Stahr, K.* ; Drösler, M.* ; Schloter, M. ; Jungkunst, H.F.*

Particulate organic carbon (POC) in relation to other pore water carbon fractions in drained and rewetted fens in Southern Germany.

Biogeosciences 5, 1615-1623 (2008)
Verlagsversion Volltext DOI
Open Access Gold
Creative Commons Lizenzvertrag
Numerous studies have dealt with carbon (C) contents in Histosols, but there are no studies quantifying the relative importance of the individual C components in pore waters. For this study, measurements were taken of all the carbon components (particulate organic carbon, POC; dissolved organic carbon, DOC; dissolved inorganic carbon, DIC; dissolved methane, CH4) in the soil pore water of calcareous fens under three different water management regimes (re-wetted, deeply and moderately drained). Pore water was collected weekly or biweekly (April 2004 to April 2006) at depths between 10 and 150 cm. The main results obtained were: (1) DIC (94–280 mg C l-1) was the main C-component. (2) POC and DOC concentrations in the pore water (14–125 mg C l-1 vs. 41–95 mg C l-1) were pari passu. (3) Dissolved CH4 was the smallest C component (0.005–0.9 mg C l-1). Interestingly, about 30% of the POM particles were colonized by microbes indicating that they are active in the internal C turnover. Certainly, both POC and DOC fractions are essential components of the C budget of peatlands. Furthermore, dissolved CO2 in all forms of DIC appears to be an important part of peatland C-balance.
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Publikationstyp Artikel: Journalartikel
Dokumenttyp Wissenschaftlicher Artikel
Korrespondenzautor
Schlagwörter Particulate organic carbon (POC); pore water carbon fractions; fens; Southern Germany; UPLAND PEAT CATCHMENT; MATTER; FOREST; EXPORT; SOIL; MICROSCOPY; PEATLANDS; DIOXIDE; STREAMS; FLUXES
ISSN (print) / ISBN 1726-4170
e-ISSN 1726-4189
Zeitschrift Biogeosciences
Quellenangaben Band: 5, Heft: SI, Seiten: 1615-1623 Artikelnummer: , Supplement: ,
Verlag Copernicus
Verlagsort Göttingen
Nichtpatentliteratur Publikationen
Begutachtungsstatus Peer reviewed
Institut(e) Institute of Soil Ecology (IBOE)