Soil Organic Matter Dynamics: Processes of Stabilization and Decomposition II

Tuesday, 16 December 2014: 8:00 AM-10:00 AM
Chairs:  Kate Lajtha, Oregon State University, Corvallis, OR, United States and Marc G Kramer, University of Florida, Soil and Water Science Department, Ft Walton Beach, FL, United States
Primary Conveners:  Kate Lajtha, Oregon State University, Corvallis, OR, United States
Co-conveners:  Marc G Kramer, University of Florida, Soil and Water Science Department, Ft Walton Beach, FL, United States, Jennifer Y King, University of California Santa Barbara, Santa Barbara, CA, United States and Katherine A Heckman, USDA Forest Service, Northern Institute of Applied Climate Science, Vallejo, CA, United States
OSPA Liaisons:  Nancy Cavallaro, USDA/NIFA, Washington, DC, United States

Abstracts Submitted to this Session:

8:00 AM
The Temperature Optima and Temperature Sensitivity of Soil Respiration Explained By Macromolecular Rate Theory (MMRT).
Louis A Schipper, Tanya O'Neill and Vickery L Arcus, University of Waikato, Hamilton, New Zealand
8:15 AM
Decomposition of Decadally Cycling Soil Organic Carbon is Sensitive to Warming
Weixin Cheng, University of California Santa Cruz, Santa Cruz, CA, United States and Junjie Lin, Institute of Applied Ecology, Chinese Academy of Sciences, National Key Laboratory of Forests and Soils, Shenyang, China
8:30 AM
8:45 AM
Soil Mineralogy and Substrate Quality Effects on Microbial Priming
Brianna K Finley1,2, Craig Rasmussen3, Paul Dijkstra1,2, Egbert Schwartz1,2, Rebecca L Mau2, Xiao-Jun Allen Liu1,2 and Bruce A Hungate2,4, (1)Northern Arizona University, Department of Biological Sciences, Flagstaff, AZ, United States, (2)Northern Arizona University, Center for Ecosystem Science and Society, Flagstaff, AZ, United States, (3)University of Arizona, Tucson, AZ, United States, (4)Northern Arizona University, Flagstaff, AZ, United States
9:15 AM
Why is Mineral-Associated Organic Matter Enriched in 15N? Evidence from Grazed Pasture Soil
W Troy Baisden1, Naomi S Wells2, Paul L Mudge3, Timothy J Clough4, Louis A Schipper5, Anwar Ghani6 and Bryan Stevenson3, (1)GNS Science-Institute of Geological and Nuclear Sciences Ltd, Lower Hutt, New Zealand, (2)Helmholtz Centre for Environmental Research UFZ Halle, Halle, Germany, (3)Landcare Research, Hamilton, New Zealand, (4)Lincoln University, Lincoln, New Zealand, (5)University of Waikato, Hamilton, New Zealand, (6)AgResearch, Hamilton, New Zealand
9:30 AM
Mineral Associated Organic Matter: Plant Litter Compounds or Microbial Material?
Cornelia Rumpel, CNRS - CNRS, Thiverval Grignon, France
9:45 AM
Mineralogical Controls over Carbon Storage and Residence Times in Grassland Soils
Dipankar Dwivedi1, William J Riley2, Margaret S Torn3 and Nicolas Spycher1, (1)Lawrence Berkeley National Laboratory, Berkeley, CA, United States, (2)Lawrence Berkeley Natl Lab, Berkeley, CA, United States, (3)Berkeley Lab/UC Berkeley, Berkeley, CA, United States
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