Water and Chemical Fluxes from the Pore to Landscape Scale
Determination of water and chemical fluxes in the vadose zone remains a formidable challenge. Different techniques are used at different spatial and temporal scales to quantify these fluxes. However, there is often lack of agreement between measurements obtained at different scales. Moreover, the devices and sampling methodologies used to quantify water and chemical fluxes often interfere with the entity being measured. Porous suctions cups, for example, may sample water preferentially from macropores and may filter colloidal particles, thereby providing unrepresentative samples of vadose zone pore water. Soil disturbance due to the installation of sampling and measurement devices may also result in biased flux estimates. The use of undisturbed soil monoliths is a promising approach for measuring fluxes in the vadose zone, but this approach has limitations as well. This symposium, co-sponsored by Division S-11, was organized by Markus Flury (flury@mail.wsu.edu) and Thomas Puetz (t.puetz@fz-juelich.de).

Soil Bio Physics: A Challenging Interface
Soil microorganisms and plant root exist and function in an environment subject to physical constraints and regulated by physical processes. Although significant progress has been made in our ability to characterize the soil physical environment and quantify physical processes, their remains a critical need to improve our understanding of interactions between the soil physical and biological realms. The basic premise of this symposium is to challenge the soil physics community to work towards a better understanding of interactions between the soil physical environment and soil microorganisms and plant roots. This includes the fate and transport of microorganisms (microbes and viruses), control and optimization of bioremediation and phytoremediation, physical controls on microbial ecology, improved descriptions of water and nutrient uptake by roots, and rhizosphere processes. This symposium, co-sponsored by Division S-3, was organized by Jan Hopmans (jwhopmans@ucdavis.edu) and Kate Scow (kmscow@ucdavis.edu) in the Department of Land, Air and Water Resources at the University of California, Davis.

Tuesday, November 8
ORAL: Symposium - Soil Biophysics: A Challenging Interface (7:55am-11:30am)
Soil Science Society of America Luncheon (11:45am-1:15pm)
ORAL: Runoff/Erosion (1:25pm-2:45pm)
S-1 Business Meeting (3:00pm-4:00pm)
POSTER: Soil Hydraulic Properties: I (4:00pm-6:00pm)
POSTER: Soil Permittivity/Dielectric Properties (4:00pm-6:00pm)
POSTER: Soil Structure/Strength (4:00pm-6:00pm)

Wednesday, November 9
ORAL: Soil Water at the Field Scale (7:55am-11:00am)
ORAL: Infiltration/Water Flow (9:40am-11:45am)
ORAL: Soil Hydraulic Properties: II (1:10pm-3:45pm)
POSTER: Field Processes/Management Effects (4:00pm-6:00pm)
POSTER: Flow and Transport Processes (4:00pm-6:00pm)

Thursday, November 10
ORAL: Water Quality/Transport Modeling (7:55am-11:15am)..