B102
Soil Carbon Change and Persistence in the Anthropocene

Session ID#: 71580

Session Description:
Soils are essential components of the Critical Zone, and are both responders and drivers of the most critical environmental changes facing the earth during the Anthropocene. Soil organic matter dynamics play a major role in determining nutrient supply and C storage in ecosystems and in 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. 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 (including new methods for measuring and monitoring change), and ecosystem vulnerability. We welcome studies using a range of methods at different scales, from radiocarbon measurements to global modeling.
Index Terms:

0414 Biogeochemical cycles, processes, and modeling [BIOGEOSCIENCES]
0428 Carbon cycling [BIOGEOSCIENCES]
0486 Soils/pedology [BIOGEOSCIENCES]
1622 Earth system modeling [GLOBAL CHANGE]

Primary Convener:  Kate Lajtha, Oregon State University, Corvallis, OR, United States
Conveners:  Marc G Kramer, Washington State University Vancouver, School of the Environment, Vancouver, WA, United States and Nancy Cavallaro, USDA/NIFA, Washington, DC, United States
Primary Liaison:  Kate Lajtha, Oregon State University, Corvallis, OR, United States
 
Rooting Depths Change on a Global Scale in the Anthropocene (490121)
Emma Hauser, University of Kansas, Ecology and Evolutionary Biology, Lawrence, KS, United States, Pamela L Sullivan, Oregon State University, College of Earth, Ocean, and Atmospheric Science, Corvallis, OR, United States and Sharon A Billings, Univ Kansas, Lawrence, KS, United States
 
Multi-year incubation experiments boost confidence in model projections of long-term soil carbon dynamics (491038)
Jianwei Li1, Siyang Jian1, Gangsheng Wang2, Laurel Anne Kluber3, Christopher W Schadt3 and Melanie A Mayes4, (1)Tennessee State University, Nashville, TN, United States, (2)University of Oklahoma, Institute for Environmental Genomics and Department of Microbiology & Plant Biology, Norman, OK, United States, (3)Oak Ridge National Laboratory, Oak Ridge, TN, United States, (4)ORNL, Oak Ridge, TN, United States
 
A substantial role of soil erosion in the land carbon sink and its future changes (491726)
Zeli Tan1, Leung Ruby1, Hong-Yi Li2, Teklu K Tesfa3, Qing Zhu4 and Maoyi Huang5, (1)Pacific Northwest National Laboratory, Richland, WA, United States, (2)University of Houston, Houston, TX, United States, (3)PNNL, Richland, WA, United States, (4)Lawrence Berkeley National Laboratory, Berkeley, CA, United States, (5)Pacific NW Nat'l Lab-Atmos Sci, Richland, WA, United States
 
Animal, vegetable, mineral: Identifying the indirect effects of large vertebrate herbivores and land use on carbon cycling in a Kenyan savanna ecosystem (493178)
Elizabeth Sullivan Forbes1, Kelly K Caylor2, Truman Young3, Mark Hirsch1, Hillary S Young1 and Field and lab research team: Naisikie Mantas, George Koech, Godfrey Amooni, Alfred Ekaaz, Dana Moore, Grace Lewin, Spencer Frey, Vincent Benenati, (1)University of California Santa Barbara, Santa Barbara, CA, United States, (2)University of California Santa Barbara, Department of Geography, Santa Barbara, CA, United States, (3)University of California Davis, Davis, CA, United States
 
Long-term Nitrogen Addition Decreases Organic Matter Decomposition and Increases Forest Soil Carbon (501772)
Richard Bowden1, Kate Lajtha2, Sarah Wurzbacher3, Susan Washko3, Lauren Wind4, Alexandrea Mae Rice5, Adrienne Coble6, Nicholas Baldauf7, Brittany Johnson6, Jun-Jian Wang8 and Myrna J Simpson9, (1)Allegheny College, Department of Environmental Science, Meadville, PA, United States, (2)Oregon State University, Corvallis, OR, United States, (3)Allegheny College, Meadville, United States, (4)Virginia Polytechnic Institute and State University, Biological Systems Engineering, Blacksburg, VA, United States, (5)State University of New York, College of Environmental Science and Forestry, Syracuse, NY, United States, (6)Allegheny College, Environmental Science and Sustainability, Meadville, PA, United States, (7)Allegheny County Health Department, Pittsburgh, PA, United States, (8)Southern University of Science and Technology, School of Environmental Science and Engineering, Shenzuan, China, (9)University of Toronto, Toronto, ON, Canada
 
Organic carbon storage in anthracite-containing riparian soil (512449)
Alain F Plante1, Elizabeth K. Williams1, Sunghwan Kim2 and Matthew Ricker3, (1)University of Pennsylvania, Earth & Environmental Science, Philadelphia, PA, United States, (2)Kyungpook National University, Chemistry, Daegu, South Korea, (3)North Carolina State University Raleigh, Crop and Soil Sciences, Raleigh, NC, United States
 
A Perspective Change: Soil C Destabilization, not Stabilization, Drives C Cycle Feedbacks to the Earth System (520886)
Vanessa L Bailey, Pacific Northwest National Laboratory, Richland, WA, United States, Caitlin Hicks Pries, Dartmouth College Life Sciences Center, room 349 78, Hanover, NH, United States and Kate Lajtha, Oregon State University, Corvallis, OR, United States
 
Increased Accommodation Space and OC Stabilization Enhance the Efficiency of the Mangrove Blue Carbon Sink (521315)
Carey Schafer, University of South Florida Tampa, College of Marine Science, Tampa, FL, United States, Brad E Rosenheim, University of South Florida St. Petersburg, College of Marine Science, St Petersburg, FL, United States, Joseph M Smoak, Univ of South Florida, St Petersburg, FL, United States, Joshua Breithaupt, University of Central Florida, Biology, Orlando, FL, United States and Ryan P Moyer, Florida FWC, St Petersburg, FL, United States
 
Belowground production and contribution of recent plant detritus to soil organic matter pools in montane meadows of the Sierra Nevada (525094)
Stephen C Hart, University of California Merced, Merced, CA, United States
 
Rates and Mechanisms of CO2 Consumption in Mojave Desert Soils (529781)
Jennifer Mills1, Gregory E Maurer2, Ronald Amundson3 and Laura Nielsen Lammers3,4, (1)University of California Berkeley, Department of Environmental Science, Policy, and Management, Berkeley, CA, United States, (2)New Mexico State University, Jornada Basin LTER Program, Las Cruces, NM, United States, (3)University of California Berkeley, Department of Environmental Science, Policy and Management, Berkeley, CA, United States, (4)Lawrence Berkeley National Laboratory, Berkeley, CA, United States
 
Pocket gophers slow soil carbon accumulation in abandoned agricultural lands (540415)
Yi Yang, University of Nebraska Lincoln, Lincoln, NE, United States, Johannes M.H. Knops, Xi'an Jiaotong Liverpool University, Health and Environmental Sciences, Suzhou, China and Chad Brassil, University of Nebraska-Lincoln, School of Biological Sciences, Lincoln, NE, United States
 
Do payments for ecosystem services promote soil carbon sequestration in the tropics? (543750)
Andreas Khechfe, Humboldt State University, Arcata, CA, United States, A. Peyton Smith, Texas A&M University College Station, College Station, TX, United States, Katherine Quiñonez-González, Texas A&M University College Station, College Station, United States, James K Brumbelow, Texas A&M University College Station, Civil Engineering, College Station, TX, United States and Georgianne W Moore, Texas A&M University, Ecosystem Science and Management, College Station, TX, United States
 
Long-Term Grazing and Woody Plant Encroachment Alter C, N, and P Stores and the Structure and Function of Soil Microbial Communities in Juniper-Oak Savanna (550706)
Thomas W Boutton1, Ryan M Mushinski2, Yong Zhou3, Ayumi Hyodo1 and Claudio Casola1, (1)Texas A&M University, College Station, TX, United States, (2)Indiana University, Bloomington, IN, United States, (3)Yale University, New Haven, CT, United States
 
The effect of saltwater intrusion on the spatial inaccessibility of carbon in coastal agricultural fields (552089)
Elizabeth de la Reguera, University of Maryland College Park, College Park, MD, United States, Keryn Gedan, George Washington University, Washington DC, United States, Margaret Palmer, National Socio-Environmental Synthesis Center (SESYNC), Univ of MD, Annapolis, MD, United States and Katherine Lynn Tully, Earth Institute, Columbia University, New York, NY, United States
 
Regional mapping of biologically significant carbon fractions aided by mid infrared spectroscopy (553838)
Jonathan Sanderman1, Jeff Baldock2, Shree R.S. Dangal1 and Kathleen E Savage1, (1)Woods Hole Research Center, Falmouth, MA, United States, (2)CSIRO Land and Water, Glen Osmond, Australia
 
Response of soil carbon to historical land use changes in the US Great Plains: effects of matching soil carbon fractions with ecosystem model of active, slow and passive pools (555190)
Shree R.S. Dangal, Christopher R Schwalm and Jonathan Sanderman, Woods Hole Research Center, Falmouth, MA, United States
 
Ecosystem feedbacks to climate warming: temporal dynamics of soil respiration and decomposition of soil organic carbon over a long-term field warming and its further impacts on ecosystem carbon residence time (555238)
Chang Gyo Jung1,2, Zhenggang Du3, Lifen Jiang2,4 and Yiqi Luo2,4, (1)Northern Arizona University, Flagstaff, AZ, United States, (2)Center for Ecosystem Science and Society, Northern Arizona University, Flagstaff, AZ, United States, (3)East China Normal University, Shanghai, China, (4)Department of Biological Sciences, Northern Arizona University, Flagstaff, AZ, United States
 
Partitioning Ecosystem Respiration Using δ13C and Δ14C to Determine Sources of Permafrost C Loss After 10 Years of Experimental Warming (564890)
Elaine Pegoraro1, Marguerite Mauritz2, Kiona Ogle3, Christopher Ebert2 and Edward Schuur4, (1)Northern Arizona University, Flagstaff, AZ, United States, (2)Northern Arizona University, Center for Ecosystem Science and Society (ECOSS), Flagstaff, AZ, United States, (3)Northern Arizona University, School of Informatics, Computing, and Cyber Systems, Flagstaff, AZ, United States, (4)Univ Florida, Gainesville, FL, United States
 
Soil carbon response to climate variability (or lack thereof) in Eastern Australia over the past 100 years (570687)
Abraham Gibson1, Greg R Hancock1, Vanessa Elizabeth Haverd2, Veikko Kunkel1, Cristina Martinez3, Tristan Cox1 and Danielle Verdon-Kidd4, (1)The University of Newcastle, School of Environmental and Life Sciences, Faculty of Science, Callaghan, NSW, Australia, (2)CSIRO Canberra, Oceans and Atmosphere, Canberra, ACT, Australia, (3)University of Queensland, School of Agriculture and Food Sciences, Brisbane, QLD, Australia, (4)The University of Newcastle, School of Environmental and Life Sciences, Faculty of Science, Callaghan, Australia
 
Influence of Reduced Precipitation on the Allocation and Persistence of Root Carbon in a California Annual Grassland (571534)
Christina Fossum1, Ilexis X Jacoby2, Rachel Neurath3, Mengting Yuan4, Dinesh Adhikari5, Rachel C Porras6, Amrita Bhattacharyya6, Donald Herman1, Jennifer Pett-Ridge3, Mary Firestone7 and Katerina Estera-Molina8, (1)University of California Berkeley, Berkeley, CA, United States, (2)Toulouse, France, (3)Lawrence Livermore National Laboratory, Livermore, CA, United States, (4)University of Oklahoma Norman Campus, Norman, United States, (5)University of Nevada Reno, Civil and Environmental Engineering, Reno, NV, United States, (6)Lawrence Berkeley National Laboratory, Berkeley, CA, United States, (7)Univ California Berkeley, Berkeley, CA, United States, (8)University of California Berkeley, Berkeley, United States
 
Enzymes, iron or manganese? Drivers of organic matter decomposition in forest soils (582780)
Marco Keiluweit1, Nathan A Chin2, Samantha Ying3, Peter S Nico4 and Morris E Jones1, (1)University of Massachusetts Amherst, Amherst, MA, United States, (2)University of Massachusetts Amherst, Amherst, United States, (3)University of California Riverside, Riverside, CA, United States, (4)Lawrence Berkeley National Lab, Berkeley, CA, United States
 
The feedback between soil bacteria type and soil mineralogy and its possible influence on soil carbon residence time (588377)
Karin A Block1, Stephanie A Pena2, Finola Fung-Khee1, Al Katz3, Jeffrey A Bird4 and Paul Gottlieb5, (1)CUNY City College of New York, Earth and Atmospheric Sciences, New York, NY, United States, (2)CUNY City College of New York, New York, NY, United States, (3)CUNY City College of New York, Physics, New York, NY, United States, (4)Queens College, CUNY, Queens, NY, United States, (5)CUNY Medical School, Microbiology and Immunology, New York, NY, United States
 
Controls on soil respiration rates at sites throughout North America (599979)
Edward Ayres, NEON - Battelle, Terrestrial Instrument System, Boulder, CO, United States
 
Mineralogical Associations with Soil Carbon in Managed Peatland Soils (602521)
Tyler L Anthony and Whendee L Silver, University of California Berkeley, Department of Environmental Science, Policy, and Management, Berkeley, CA, United States
 
Persistence of Soil Organic Matter Mirrored in Dissolved Molecules (608366)
Gerd Gleixner, Max Planck Institute for Biogeochemistry, Jena, Germany
 
Effect of precipitation on soil carbon storage and turnover in a tropical forest in Panama (609737)
Kari M Finstad1, Daniela F Cusack2, Lee Dietterich2, Benjamin L Turner3 and Karis J McFarlane1, (1)Lawrence Livermore National Laboratory, Livermore, CA, United States, (2)Colorado State University, Department of Ecosystem Science and Sustainability, Fort Collins, CO, United States, (3)Smithsonian Tropical Res Inst, Ancon, Panama
 
Temporal and spatial variability of soil CO2 and its isotopic signature (δ13C) in a pine forest stand (611194)
Hubert Jochheim and Stephan Wirth, Leibniz Centre for Agricultural Landscape Research, Müncheberg, Germany
 
Soil Organic Carbon Turnover Over Time Across a Tropical Forest Edaphic Gradient (611691)
Allegra Mayer, University of California Berkeley, Berkeley, CA, United States, Karis J McFarlane, Lawrence Livermore National Laboratory, Livermore, CA, United States and Whendee L Silver, University of California Berkeley, Department of Environmental Science, Policy, and Management, Berkeley, CA, United States
 
Microbes help and hinder the stabilization of soil C (622661)
Derek Pierson1, Kamron Kayhani2, Lucas Evans2, Malak M Tfaily3, Myrna J Simpson4 and Kate Lajtha5, (1)Oregon State University, Corvalis, OR, United States, (2)Oregon State University, Corvallis, United States, (3)University of Arizona, Tucson, AZ, United States, (4)University of Toronto, Toronto, ON, Canada, (5)Oregon State University, Corvallis, OR, United States
 
How Much Carbon is Stored in Ancient Amazonian Anthrosols? (623376)
Morgan J. Schmidt1, J Taylor Perron2, Michael Heckenberger3, Wetherbee Bryan Dorshow4, Bruno Moraes5, Jennifer Watling6, Eduardo Neves6, Dorothy Hosler7, Samuel Lukens Goldberg1, Luiz Fernando Leal8, Kumessi Waura9, Hulke Kuikuro9, Wate Kuikuro9 and Afukaka Kuikuro9, (1)Massachusetts Institute of Technology, Earth, Atmospheric and Planetary Sciences, Cambridge, MA, United States, (2)MIT---EAPS, Cambridge, MA, United States, (3)University of Florida, Anthropology, Gainesville, FL, United States, (4)Puente Institute, Santa Fe, NM, United States, (5)Museu Paraense Emilio Goeldi, Belem, Brazil, (6)University of Sao Paulo, Sao Paulo, Brazil, (7)Massachusetts Institute of Technology, Materials Science and Engineering, Cambridge, MA, United States, (8)Florida Institute of Technology, Aerospace, Physics and Space Sciences, Melbourne, FL, United States, (9)Kuikuro Indigenous Association of the Upper Xingu (AIKAX), Ipatse, Brazil
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