52 Chemical Processes Responsible for Carbon Fluxes: I

Oral Session
SSSA Division: Soil Chemistry
Intimate association of organic matter with mineral phases has been acknowledged as a fundamental mechanism for stabilizing organic compounds against biological degradation, controlling the long-term sequestration of organic matter in terrestrial ecosystems. Understanding the dynamics of organic matter within the mineral matrix at the organo-mineral interface at the micro- and nano-scales is essential for understanding the processes controlling the quantity, quality and turnover of organic carbon attached to mineral particles. This session will focus on investigations elucidating chemical processes responsible for soil carbon fluxes.
Monday, November 16, 2015: 8:30 AM-11:20 AM
Minneapolis Convention Center, M100 B

Daniel G. Strawn , Hero T. Gollany and Ganga M. Hettiarachchi
Hero T. Gollany and Ganga M. Hettiarachchi
8:30 AM
Introductory Remarks
8:35 AM
Impact of Temperature and Adsorptive Fractionation on Transport of DOC in Iron-Rich Porous Media.
Thomas Borch, Colorado State University; Ellen Daugherty, Colorado State University
8:50 AM
Decomposition and Sequestration of Organic Matter in Fine-Sized Fractions Modified By Clay Mineral Composition.
Ingrid Koegel-Knabner, Technical University of Munich; Geertje Johanna Pronk, University of Waterloo; Cordula Vogel, Dresden University of Technology; Katja Heister, Technische Universität München
9:05 AM
Organic Matter Stabilization: Mechanistic Insights at the Molecular and Nanometer Length Scales.
Christina J. Newcomb, Pacific Northwest National Laboratory; Nikolla P. Qafoku, Pacific Northwest National Laboratory; Jay W. Grate, Pacific Northwest National Laboratory; Ryan Hufschmid, University of Washington; Nigel D. Browning, Pacific Northwest National Laboratory; James J. De Yoreo, Pacific Northwest National Laboratory
9:20 AM
Description and Quantification of the Associations Between Soil Organic Matter and Clay-Sized Minerals in a Mollisol Using Stxm High Resolution Chemical Mapping.
Sofia Oufqir, University Mohamed V-Agdal‎; James Dynes, ‎Canadian Light Source Inc., University of Saskatchewan; Brandy Marie Toner, University of Minnesota, Twin Cities; Paul R. Bloom, University of Minnesota
9:35 AM
The Effects of Temperature, Moisture, and Management on Soil Microbial Properties in Two Different Soils.
Dorothy Menefee, Texas A&M University; Pavithra Sajeewani Pitumpe Arachchige, Kansas State University; Ganga M. Hettiarachchi, Kansas State University; Charles W. Rice, Kansas State University
9:50 AM
Characteristics of Free and Mineral Associated Organic Matter in Soils with Contrasting Mineralogy.
Balwant Singh, University of Sydney; Cliff Johnston, Purdue University; Donald L Sparks, University of Delaware; Sabina Yeasmin, University of Sydney
10:05 AM
10:20 AM
Understanding of Coupled Physicochemical Mechanisms Controlling Soil Carbon Storage and Stabilization.
Ganga M. Hettiarachchi, Kansas State University; Pavithra Sajeewani Pitumpe Arachchige, Kansas State University; Leila Maurmann, Instrumentation Facility Manager; Dorothy Menefee, Texas A&M University; Charles W. Rice, Kansas State University; Chithra Karunakaran, Canadian Light Source; Jay Dynes, Canadian Light Source; Tom Regier, Canadian Light Source
10:35 AM
pH-Induced Mobilization of Carbon in Soil Treated with Waste Streams.
Nanthi S. Bolan, University of South Australia
10:50 AM
Chemical Force Spectroscopy Evidence Supporting the Layer-By-Layer Model of Organic Matter Binding to Iron (oxy)Hydroxide Mineral Surfaces.
Tsutomu Ohno, University of Maine; Alexanderw W. Chassé, University of Maine; Steven Higgins, Wright State University; Aria Amirbahman, University of Maine; Thomas Parr, University of Delaware; Nadir Yildirim, University of Maine
11:05 AM
Impacts of Erosion Rates on Organic Carbon Inventories and Carbon-Mineral Interactions in Steep Mountains.
Xiang Wang, University of Minnesota; Kyungsoo Yoo, University of Minnesota; Simon Marius Mudd, School of GeoSciences, University of Edinburgh; Beth Weinman, California State University, Fresno; Jessica Gutknecht, University of Minnesota
11:20 AM