are described below.
Contact: Anthony Aufdenkampe
Q1.1. What determines OC complexation potential?
Q1.2. What is the role of microorganisms in the formation, aging, and maintenance of Fe oxide-OC complexes?
Contact: Kyungsoo Yoo, Paul Imhoff
Q2.1: How do physical and hydro-chemical weathering produce mineral SA and pore structure within the critical zone and how are these processes altered by biological C cycling and landscape redistribution of water and solutes?
Q2.2: How do increases in mineral SA and pore space from mineral weathering alter water retention, water and gas transport, and carbon-mineral interactions? Do these changes provide a positive feedback that increases rates of mineral weathering?
Q2.3: How do agricultural practices that physically disturb colluvial soil alter the C-cycle, moisture retention, and mineral weathering?
Contact: Jim Pizzuto, Rolf Aalto
Q3.1: What are the dominant water and DOC source areas, flowpaths, and residence times (transit times) across CZO watersheds and stream networks?
Q3.2. How does surface/subsurface water exchange influence the movement of DOC at different scales and in different environments?
Q3.3. What are the transport pathways and residence times of mineral-carbon complexes as they move through the Piedmont uplands, the tidally influenced Coastal Plain, and the estuary?
Contact: Anthony Aufdenkampe, J. Denis Newbold
Q4.1 How are erosion-deposition processes linked to alteration of net CO2 fluxes between land and atmosphere?