The session intends to bring together scientists from different disciplines, e. g. mineralogy, biogeochemistry, microbiology, and ecology, to evaluate our current knowledge of element and matter cycling as controlled by hydrologically and microbially mediated redox conditions in soils and sediments.

The aim of session is to highlight the significance of alternating redox conditions, a typical feature of paddy soils, for biogeochemical cycling. Beside the frequently discussed issues of trace gas emissions from paddy soils, the session focuses on multifunctional consequences of redox conditions in paddy soil ranging from (1) production and stabilisation of organic matter, (2) transformation of primary and secondary minerals, (3) interactions between minerals and dissolved organic matter, (4) mobilisation/immobilisation of redox sensitive and associated elements.

Particularly presentation of studies from experimental studies that introduce new approaches or techniques for characterization of (1) soil organic matter and microbial consortium and (2) interaction between mineral surface and dissolved organic matter are encouraged to submit contributions to this session.