B41J:
Vulnerability of Permafrost Carbon to Climate Change II


Session ID#: 8594

Session Description:
Permafrost zone soils contain between 1330-1580 Pg of carbon. Permafrost degradation can change ecosystem carbon storage by enhancing microbial activity and ecosystem respiration, but can also stimulate plant growth and increase carbon stored in vegetation and surface soil. While increased permafrost carbon emissions in a warming climate are more likely to be gradual and sustained we need a better understanding of the magnitude and timing of greenhouse gas emissions from these remote regions to fully estimate the potential feedback from permafrost carbon to climate change.

This session invites papers that examine factors causing losses and gains in ecosystem carbon storage relating to the magnitude, timing and form of carbon release from permafrost. Papers may address any aspect of this topic from microbial communities to the global scale, using a range of measurements or modeling to detect and forecast permafrost thaw and the influence on the carbon cycle and future climate.

Primary Convener:  Christina Schaedel, Northern Arizona University, Flagstaff, AZ, United States
Conveners:  Edward Schuur, Northern Arizona University, Flagstaff, AZ, United States and Cristian Estop-Aragones, University of Alberta, Edmonton, AB, Canada
Chairs:  Christina Schaedel, Northern Arizona University, Flagstaff, AZ, United States and Edward Schuur, Northern Arizona University, Flagstaff, AZ, United States
OSPA Liaison:  Christina Schaedel, Northern Arizona University, Flagstaff, AZ, United States

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

0428 Carbon cycling [BIOGEOSCIENCES]
0486 Soils/pedology [BIOGEOSCIENCES]
0702 Permafrost [CRYOSPHERE]
1615 Biogeochemical cycles, processes, and modeling [GLOBAL CHANGE]

Abstracts Submitted to this Session:

Mobilization of stable organic carbon in thawing permafrost by fresh organic matter from recent vegetation (Invited) (62142)
Christian Knoblauch, University of Hamburg, Institute of Soil Science, Hamburg, Germany, Christian Beer, Department of Environmental Science and Analytical Chemistry, Stockholm University, Bolin Centre for Climate Research, Stockholm, Sweden and Eva-Maria Pfeiffer, Universität Hamburg, Center for Earth System Research and Sustainability, Institute of Soil Science, Hamburg, Germany
Long Term Thawing Experiments on Intact Cores of Arctic Mineral Cryosol: Implications for Greenhouse Gas Feedbacks from Global Warming (64708)
Tullis C Onstott1, Brandon T Stackhouse2, Chui Yim Maggie Lau Vetter1, Lyle G. Whyte3, Susan M Pfiffner4 and Tatiana A Vishnivetskaya5, (1)Princeton University, Department of Geosciences, Princeton, NJ, United States, (2)Princeton Univ, Princeton, NJ, United States, (3)McGill University, Natural Resource Sciences, Sainte-Anne-de-Bellevue, QC, Canada, (4)University of Tennessee, Knoxville, TN, United States, (5)University of Tennessee, Knoxville, United States
Susceptibility of Permafrost Soil Organic Carbon under Warming Climate (73091)
Ziming Yang1, Stan D Wullschleger1, Liyuan Liang1, David E Graham2 and Baohua Gu1, (1)Oak Ridge National Laboratory, Environmental Sciences Division, Oak Ridge, TN, United States, (2)Oak Ridge National Laboratory, Biosciences Division, Oak Ridge, TN, United States
Legacy Effects of Warming on Permafrost Carbon Release (78314)
Daan Blok1, Samuel Faucherre2, Imre Banyasz2, Anders Michelsen2 and Bo Elberling3, (1)University of Copenhagen, København K, Denmark, (2)Center For Permafrost (CENPERM), Department of Geosciences and Nature Management, University of Copenhagen, Copenhagen, Denmark, (3)Center For Permafrost (CENPERM), Department of Geosciences and Natural Resource Management, University of Copenhagen, Copenhagen, Denmark
Aerobic Conditions are Required for Rapid Carbon Losses following Permafrost Thaw (72916)
Mark David Arthur Cooper, University of Exeter, Exeter, EX4, United Kingdom and Cristian Estop-Aragones, University of Exeter, College of Life and Environmental Sciences, Exeter, EX4, United Kingdom
Carbon and Nitrogen cycling in a permafrost soil profile (78774)
Verity G Salmon1, Christina Schaedel2, Michelle C Mack3 and Edward Schuur2, (1)Oak Ridge National Laboratory, Environmental Sciences Division, Oak Ridge, United States, (2)Northern Arizona University, Flagstaff, AZ, United States, (3)Northern Arizona University, Center for Ecosystem Science and Society, Flagstaff, AZ, United States
Microbial communities and greenhouse gas production from a thermokarst bog chronosequence: Mechanisms of rapid carbon loss (84396)
Mark P Waldrop1, Miriam Jones2, Kristen Manies3, Jack W Mcfarland4, Steve Blazewicz3, Jason Keller5, Monica Haw6, Jennifer W W Harden7, Cassandra Medvedeff8 and Merritt R Turetsky9, (1)USGS California Water Science Center Menlo Park, Menlo Park, CA, United States, (2)U.S. Geological Survey, Reston, United States, (3)US Geological Survey, Menlo Park, CA, United States, (4)US Department of Interior, Geological Survey, Menlo Park, United States, (5)Chapman University, Schmid College of Science and Technology, Orange, United States, (6)U.S. Geological Survey, Geology, Minerals, Energy, and Geophysics Science Center, Menlo Park, United States, (7)Stanford University, Earth System Science, Stanford, United States, (8)University of Florida, Gainesville, FL, United States, (9)Renewable and Sustainable Energy Institute, Department of Ecology and Evolutionary Biology, Boulder, United States
Here Today, Gone Tomorrow? Using Contrasting Peatland Histories To Determine Fate Of Permafrost Carbon With Future Climate Change And Permafrost Thaw (60621)
Claire C Treat, University of Alaska Fairbanks, Fairbanks, AK, United States, Miriam Jones, U.S. Geological Survey, Reston, United States, Steve E Frolking, University of New Hampshire, Durham, NH, United States and Jay R Alder, USGS, Baltimore, MD, United States

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