Information - SSS11/HS44 Coupled hydrological, biological and chemical processes in the unsaturated zone (co-organized by HS) (co-listed in BG)
The fate and transport of solutes in soil strongly depends on a myriad of hydrological, biological and chemical processes. Over the past few years there have been major advances in understanding the link between biological, hydrological and chemical processes in soil, driven by the need to mitigate deleterious land management practices. Simultaneously, advanced computer models are being developed that help us to interprete the complex interactions and feed back loops between the biotic and abiotic soil compartment. New research has shown that soil hydrological and chemical processes can be affected by specific chemicals released from decaying leaves and roots, soil animal and root exudates, as well as root and microbial mucilages that change pore characteristics. Recent research also addresses influences of processes in the rhizosphere on the uptake and leaching of chemicals. In this session we aim to present fundamental research on biology-hydrology-geochemistry interactions, and new measurement and modelling techniques that are helping us unravel this complex problem. Contributions can vary from microscale processes caused by a specific organism, through plot-scale studies dealing with the impact of water repellency and preferential flow, up to the impact of large-scale shifts in soil processes caused by land management.
Preliminary List of Solicited Speakers
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