156 Symposium--S2/S9 Joint Symposium On Redoximorphic Processes Across Scales: I

Oral Session
S09 Soil Mineralogy Oxidation-reduction (redox) reactions are encountered in a variety of environments such as soils, sediments, and surface waters. Electron transfer involves the bringing together or coupling of two- half reactions and is important in controlling contaminant speciation, cycling of naturally occurring soil elements (carbon, nitrogen, iron, manganese, and sulphur), and mineral weathering. Redox reactions are catalyzed by microorganisms and can be mediated by abiotic processes. The purpose of this joint symposium is to bring together scientists in the Wetlands, Soil Chemistry, and Soil Mineralogy divisions to explore redox processes over a range of spatial scales, from the molecular level all the way to the field scale in order to identify gaps in our understanding of coupled processes and electron flow.


Soil Chemistry, Wetland Soils
Monday, October 22, 2012: 7:00 AM-9:40 AM
Duke Energy Convention Center, Room 205, Level 2

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Christopher Matocha and Aaron Thompson
Christopher Matocha and Nikolla Qafoku
8:05 AM
Methane Emission From Flooded Soils - From Microorganisms to the Atmosphere.
Ralf Conrad, MPI für terrestrische Mikrobiologie
8:30 AM
Imaging Soil Litter Decomposition: Integrating Synchrotron-Based Elemental and Molecular Imaging Techniques.
Jonathan Maynard, U.S. Environmental Protection Agency; Mark G. Johnson, U.S. Environmental Protection Agency; Peter S. Nico, Lawrence Berkeley National Lab
8:45 AM
9:00 AM
Atom Exchange Between Fe(II) and Nanocrystalline Iron Phases in Tropical Soils.
Aaron Thompson, University of Georgia; Viktor Tishchenko, Georgia Perimeter College; Christof Meile, University of Georgia; Michelle Scherer, University of Iowa; Tim Pasakamis, University of Iowa
9:15 AM
Oxygen Dynamics and Redox Sensitive Biogeochemical Cycling in Upland Ecosystems.
Whendee Silver, University of California, Berkeley; Wendy Yang, University of California, Berkeley; Steven Hall, University of California, Berkeley; Dan Liptzin, University of New Hampshire; Maya Almarez, Brown University
9:40 AM