B22D:
Soil Organic Matter and the Global Carbon Cycle: Mechanisms for Accumulation and Loss in a Changing World II

Submit an Abstract to this Session



Session ID#: 31786

Session Description:
The reservoir of carbon contained in soil organic matter is exceedingly large. However the mechanisms for it’s accumulation, retention and loss are not well understood. Our ability to predict how climate change and man’s alteration of the terrestrial landscape affect soil organic matter dynamics ultimately depend on a deeper understanding of the underlying mechanisms. This session will focus on empirical and modeling studies of soils and carbon: storage potential, mechanisms of stabilization/ destabilization/ long term storage, and ecosystem vulnerability. Isotopic, geochemical, spectroscopic and other novel molecular techniques that probe deeper into the fate and function of organic matter across spatial and temporal scales are especially encouraged.
Primary Convener:  Marc G Kramer, Washington State University Vancouver, School of the Environment, Vancouver, WA, United States
Conveners:  Kate Lajtha, Oregon State University, Corvallis, OR, United States and Nancy Cavallaro, USDA Washington DC, Washington, DC, United States
Chairs:  Marc G Kramer, Washington State University Vancouver, School of the Environment, Vancouver, WA, United States and Nancy Cavallaro, USDA Washington DC, Washington, DC, United States
OSPA Liaison:  Nancy Cavallaro, USDA Washington DC, Washington, DC, United States
Index Terms:

0414 Biogeochemical cycles, processes, and modeling [BIOGEOSCIENCES]
0428 Carbon cycling [BIOGEOSCIENCES]
0454 Isotopic composition and chemistry [BIOGEOSCIENCES]
0486 Soils/pedology [BIOGEOSCIENCES]

Abstracts Submitted to this Session:

Soil Carbon in the Time of Climate Change (Invited) (258199)
Ronald Amundson, University of California Berkeley, Berkeley, CA, United States
Accelerated decay rates drive soil organic matter persistence and storage in temperate forests via greater mineral stabilization of microbial residues. (276043)
Richard P Phillips, Indiana University Bloomington, Department of Biology, Bloomington, IN, United States, Matthew Craig, Indiana University Bloomington, Department of Biology, Bloomington, United States, Benjamin L Turner, Smithsonian Tropical Res Inst, Ancon, Panama and Chao Liang, CAS Chinese Academy of Sciences, Institute of Applied Ecology, Beijng, China
Controls on carbon storage and weathering in volcanic ash soils across a climate gradient on Mauna Kea, Hawaii (277151)
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
The Influence of Land-Use Change on Soil and Dissolved Organic Matter Age, Lability, and Chemical Characteristics in Brazilian Oxisols (292885)
Jason Nathaniel James1, Robert B Harrison1, Cole D. Gross1, Pranjal Dwivedi2, Tyler Myers1 and David E Butman3, (1)University of Washington Seattle Campus, Seattle, WA, United States, (2)University of Washington Seattle Campus, School of Environmental and Forest Sciences, Seattle, WA, United States, (3)University of Washington, School of Environmental and Forest Sciences, Seattle, United States
Landform position and charring conditions control decomposition of soil organic matter and pyrogenic carbon (297202)
Rebecca Abney1, Lixia Jin2 and Asmeret Asefaw Berhe1, (1)University of California Merced, Life and Environmental Sciences, Merced, CA, United States, (2)University of California Merced, Merced, CA, United States
Quantifying the effect of plant growth on litter decomposition using a novel, triple-isotope label approach (274943)
Jessica Gilman Ernakovich1,2, Jeff Baldock2, Thomas Carter2, Rosemarie-Ann Davis2, Karsten Kalbitz3, Jonathan Sanderman4 and Mark Farrell5, (1)University of New Hampshire Main Campus, Natural Resources and the Environment, Durham, NH, United States, (2)Commonwealth Science and Industrial Research Organisation, Agriculture and Food, Glen Osmond, Australia, (3)TU Dresden, Institute of Soil Science and Site Ecology, Dresden, Germany, (4)Woods Hole Research Center, Falmouth, MA, United States, (5)CSIRO Agriculture and Food, Adelaide, SA, Australia
The role of iron-sulfides on cycling of organic carbon in the St Lawrence River system: Evidence of sulfur-promoted carbon sequestration? (300509)
Kathryn Balind1, Andrew Barber2 and Yves Gélinas1, (1)Concordia University, Montreal, QC, Canada, (2)Concordia University, Montreal, Canada

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