Factors controlling the mobilization of organic matter,

their stability and impact in methanogenic inundated peat soils

In the face of global and local issues, such as eutrophication of surface waters, loss of biodiversity and expected global warming, there is an increasing attempt to conserve and restore wetlands in order to re-establish their natural functions. As a result of prior soil subsidence, shallow lakes are often formed after rewetting. These newly formed shallow lakes with a highly degraded

peat substrate are characteristically eutrophic and show high mobilization of nutrients (phosphate and ammonium) and dissolved organic carbon. Furthermore, extremely high methane emissions from rewetted fens have been observed. We assume that the significantly increased supply of oxidizing substances, the greater availability of OM as electron donors as well as the lack of inhibiting substances like polyphenols might explain those phenomena. The main objective of this project is to increase our understanding of matter turnover in those novel ecosystems. Based on our findings we might improve our predictions regrading the restoration of degraded peatlands.

Short Profile

Duration

16.04.2014
31.08.2017
Department
(Dept. 6) Chemical Analytics and Biogeochemistry
Research Domain
(CCRD 2) Aquatic Boundaries and Linkages
Team
Head of project
Phd student
Master student
Technical support
Topic
Funded by
Contact person
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