B32C:
Soil Carbon Change and Persistence in the Anthropocene II


Submit an Abstract to this Session


Session ID#: 59904

Session Description:
Soils are essential components of the Critical Zone, that respond to and drive critical environmental changes facing the earth during the Anthropocene. Soil organic matter dynamics play a major role in determining ecosystem C storage and regulating atmospheric CO2 concentrations. How will climate change and man’s alteration of the terrestrial landscape affect soil organic matter dynamics? A better understanding of the processes which drive C cycling in soils, and the timescales at which they operate, is critical to understanding soil C feedbacks to climate change. For example, the frequency and magnitude of precipitation is a critical control of carbon cycling in dryland soils. This session will focus on empirical and modeling studies of soils and carbon: storage potential, ages and transit times of C in soils, mechanisms of stabilization/ destabilization, and ecosystem vulnerability. We welcome studies using a range of methods at different scales, from radiocarbon measurements to global modeling.
Primary Convener:  Kate Lajtha, Oregon State University, Corvallis, OR, United States
Conveners:  Jennifer W W Harden, US Geological Survey - Retired, Menlo Park, United States, J. Robert Logan V, Michigan State University, Kellogg Biological Station, East Lansing, MI, United States and Avni Malhotra, Pacific Northwest National Laboratory, Richland, United States
Primary Liaison:  J. Robert Logan V, Michigan State University, Kellogg Biological Station, East Lansing, MI, United States
Chairs:  Kate Lajtha, Oregon State University, Corvallis, OR, United States and Nancy Cavallaro, USDA Washington DC, Washington, DC, United States
OSPA Liaison:  Nancy Cavallaro, USDA/NIFA, Washington, DC, United States

Cross-Listed:
  • GC - Global Environmental Change
Index Terms:

0414 Biogeochemical cycles, processes, and modeling [BIOGEOSCIENCES]
0428 Carbon cycling [BIOGEOSCIENCES]
0486 Soils/pedology [BIOGEOSCIENCES]
1630 Impacts of global change [GLOBAL CHANGE]

Abstracts Submitted to this Session:

Warming and nitrogen addition alters soil organic matter composition in a temperate forest soil (397655)
Lori vandenEnden1, Serita D Frey2 and Myrna J Simpson1, (1)University of Toronto, Toronto, ON, Canada, (2)University of New Hampshire, Natural Resources and the Environment, Durham, United States
Climate driven thresholds in reactive mineral retention of soil carbon at the global scale (420422)
Marc G Kramer, Washington State University Vancouver, School of the Environment, Vancouver, WA, United States and Oliver Chadwick, University of California, Santa Barbara, CA, United States
Leveraging network science to evaluate mechanisms and models of soil organic matter stabilization and change (Invited) (374167)
William R Wieder, National Center for Atmospheric Research, CGD, Boulder, CO, United States, Kate Lajtha, Oregon State University, Corvallis, OR, United States, Stevan Earl, Arizona State University, Phoenix, United States; Arizona State University, Tempe, United States, Derek Pierson, Oregon State University, Forest, Corvallis, OR, United States, Laurel Brigham, University of California San Diego, La Jolla, CA, United States; University of Colorado, INSTAAR, Boulder, CO, United States and LTER Soil Synthesis Working Group
Temporal molecular fractionation of organic matter during iron oxyhydroxide adsorption (369663)
Elizabeth K Coward, University of Delaware, Delaware Environmental Institute, Newark, DE, United States, Tsutomu Ohno, University of Maine, Orono, ME, United States and Donald L Sparks, University of Delaware, Delaware Environmental Institute, Department of Plant and Soil Sciences, Newark, DE, United States
Quantifying potential priming mechanisms providing plants and microbes access to mineral-associated organic carbon and nitrogen (Invited) (422060)
Stuart Grandy, University of New Hampshire, Department of Natural Resources and the Environment, Durham, United States and Andrea Jilling, University of New Hampshire, Durham, NH, United States
The efficiency of the root pathway for microbial formation of mineral-stabilized soil carbon (440933)
Noah Sokol, Yale University, New Haven, United States and Mark Bradford, Yale University, The Forest School, New Haven, CT, United States
Rapid incorporation of recently assimilated carbon into mineral protected organic matter of an eroded soil evidenced by field scale soil manipulation, 14C labeling, and sequential fractionation (345290)
Michael Kaiser1, Rainer Remus2, Markus Kleber3, Jürgen Augustin4 and Michael Sommer4, (1)University of Nebraska Lincoln, Lincoln, NE, United States, (2)Leibniz Centre for Agricultural Landscape Research (ZALF) e.V., Muencheberg, Germany, (3)Oregon State University, Corvallis, OR, United States, (4)Leibniz Centre for Agricultural Landscape Research (ZALF) e.V., Müncheberg, Germany
The role of mineral content and composition on the capacity of soils to store carbon (453753)
Katerina Georgiou, Stanford University, Stanford, CA, United States; Lawrence Berkeley National Laboratory, Berkeley, CA, United States, Wenting Feng, Chinese Academy of Agricultural Sciences, Institute of Agricultural Resources and Regional Planning, Beijing, China, Rose Z Abramoff, LSCE Laboratoire des Sciences du Climat et de l'Environnement, Gif-Sur-Yvette Cedex, France, William J Riley, Lawrence Berkeley National Laboratory, Climate and Ecosystem Sciences Division, Berkeley, CA, United States, Robert B Jackson, Stanford University, Earth System Science, Stanford, CA, United States and Margaret S Torn, Berkeley Lab/UC Berkeley, Berkeley, United States

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