| Volumes and Issues Contents of Issue 3 Special Issue |
| Biogeosciences Discuss., 5, 2049-2073, 2008 www.biogeosciences-discuss.net/5/2049/2008/ © Author(s) 2008. This work is distributed under the Creative Commons Attribution 3.0 License. The relevance of particulate organic carbon (POC) for carbon composition in the pore water of drained and rewetted fens of the "Donauried" (South-Germany) 1Institute of Soil Science and Land Evaluation, Univ. of Hohenheim, Emil-Wolff-Strasse 27, 70599 Stuttgart, Germany 2Ludwig-Maximilians Univ., Dept. of Geography, Luisenstr. 37, 80333 Munich, Germany 3Max-Planck-Institute for Biogeochemistry, Postfach 100164, 07701 Jena, Germany 4Vegetation Ecology, Techn. Univ. of Munich, Am Hochanger 6, 85350 Freising, Germany 5Helmholtz Center Munich, German Research Center for Environmental Health (GmbH), Institute for Soil Ecology, Department for Terrestrial Ecotoxicology, Ingolstädter Landstr. 1, 85758 Oberschleissheim, Germany 6Landscape Ecology, Institute of Geography, University of G¨ ottingen, Goldschmidtstr. 5, 37077 Göttingen, Germany |  |
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 transfer in the soil profile ("C-Shuttles"). Consequently, it was concluded that POC is at least as important as DOC for internal soil C turnover. There is no reason to assume significant biochemical differences between POC and DOC as they only differ in size. Therefore, both POC and DOC fractions are essential components of C budgets of peatlands. Furthermore dissolved CO2 in all forms of DIC apparently is an important part of peatland C-balances.
Discussion Paper (PDF, 857 KB) Interactive Discussion (Final Response, 2 Comments)
Citation: Fiedler, S., Höll, B. S., Freibauer, A., Stahr, K., Drösler, M., Schloter, M., and Jungkunst, H. F.: The relevance of particulate organic carbon (POC) for carbon composition in the pore water of drained and rewetted fens of the "Donauried" (South-Germany), Biogeosciences Discuss., 5, 2049-2073, 2008. Bibtex EndNote Reference Manager
