C21C:
Interdisciplinary Approaches to Conceptualizing Nonlinear Changes in Permafrost Landscapes I Posters

Submit an Abstract to this Session



Session ID#: 24613

Session Description:
Climate change is altering disturbance regimes in permafrost landscapes. Dramatic shifts have been observed or projected in timing and severity of wildfire disturbance, hydrogeology, and permafrost degradation including rapid active-layer deepening and thermokarst development. Because ecosystem responses to these changes depend on feedbacks among physical processes, ecological dynamics, and biogeochemical processes, multiple approaches and disciplines are needed to make meaningful predictions about what permafrost landscapes will look like in 50 or 500 years. Progress is being made toward understanding ecosystem function under historical and current disturbance regimes using remote sensing, pattern and change detection, and chronosequence approaches. These approaches often vary between upland, wetland, and lake systems, limiting our ability to project future states at regional scales. We encourage presentations investigating how ecosystem structure and function respond to changing disturbance regimes in permafrost landscapes and are particularly interested in presentations addressing abrupt or nonlinear landscape change in space and time.
Primary Convener:  Thomas A Douglas, Cold Regions Research and Engineering Laboratory Alaska, Fort Wainwright, AK, United States
Conveners:  Merritt R Turetsky, University of Guelph, Department of Integrative Biology, Guelph, ON, Canada and Benjamin W Abbott, Brigham Young University, Department of Plant and Wildlife Sciences, Provo, United States
Chairs:  Merritt R Turetsky, University of Guelph, Department of Integrative Biology, Guelph, ON, Canada, Thomas A Douglas, Cold Regions Research and Engineering Laboratory Alaska, Fort Wainwright, AK, United States and Benjamin W Abbott, Brigham Young University, Department of Plant and Wildlife Sciences, Provo, United States
OSPA Liaison:  Merritt R Turetsky, University of Guelph, Department of Integrative Biology, Guelph, ON, Canada

Cross-Listed:
  • B - Biogeosciences
  • EP - Earth and Planetary Surface Processes
  • GC - Global Environmental Change
  • H - Hydrology
Index Terms:

0475 Permafrost, cryosphere, and high-latitude processes [BIOGEOSCIENCES]
0702 Permafrost [CRYOSPHERE]
0708 Thermokarst [CRYOSPHERE]
0793 Biogeochemistry [CRYOSPHERE]

Abstracts Submitted to this Session:

Landscape Change and Microbial Response in the McMurdo Dry Valleys, Antarctica: Preliminary Results (219500)
Andrew G Fountain, Portland State University, Geology, Portland, United States, Joseph Levy, Colgate University, Geology, Hamilton, NY, United States, Michael N Gooseff, Institute of Arctic and Alpine Research, Boulder, CO, United States, David J Van Horn, University of New Mexico, Biology, Albuquerque, United States, Maciej Obryk, USGS Geological Survey, Cascade Volcano Observatory, Vancouver, WA, United States, Rickard Pettersson, Uppsala University, Uppsala, Sweden, Jennifer W Telling, University of Houston, Houston, TX, United States and Craig Len Glennie, National Center for Airborne Laser Mapping, Houston, TX, United States
Seasonal Ice Wedge Dynamics in Fosheim Peninsula, Ellesmere Island, Nunavut (233917)
Melissa Karine Ward Jones, Woods Hole Research Center, Falmouth, MA, United States and Wayne H Pollard, McGill University, Montreal, QC, Canada
Thermokarst in pingos and adjacent collapse scar bogs in interior Alaska (269073)
Thomas A Douglas, Cold Regions Research and Engineering Laboratory Alaska, Fort Wainwright, AK, United States and Merritt R Turetsky, Renewable and Sustainable Energy Institute, Department of Ecology and Evolutionary Biology, Boulder, United States
Microtopographic Evidence of Hillslope Susceptibility to Active Layer Detachments and Rapid Soil Erosion in Permafrost-dominated Watersheds (255705)
Joel C Rowland1, Eitan Shelef2, Nicholas A Sutfin1, Anastasia Piliouras1, Christian G Andresen3 and Cathy Jean Wilson1, (1)Los Alamos National Laboratory, Earth and Environmental Sciences, Los Alamos, NM, United States, (2)University of Pittsburgh, Pittsburgh, United States, (3)Los Alamos National Lab, Los Alamos, NM, United States
Long-term comparison of Kuparuk Watershed active layer maps, northern Alaska, USA (215082)
Kelsey E Nyland1, Clayton Queen2, Frederick E Nelson3, Nikolay I Shiklomanov4, Dmitry A Streletskiy4 and Anna E Klene5, (1)Michigan State University, Department of Geography, Environment, and Spatial Sciences, East Lansing, MI, United States, (2)Michigan State University, Department of Geography, Environment, and Spatial Sciences, East Lansing, United States, (3)Northern Michigan University, Department of Earth, Environmental, and Geographical Sciences, Marquette, United States, (4)George Washington University, Washington, DC, United States, (5)University of Montana, Geography, Missoula, MT, United States
Subsidence from an artificial permafrost warming experiment. (286569)
Arthur Gelvin1, Anna M Wagner2, Shan Dou3, Eileen Rose Martin4, Ian Ekblaw3, Craig Ulrich5, Stephanie R. James6, Barry M Freifeld3, Thomas M Daley7, Stephanie Saari1 and Jonathan B Ajo-Franklin8, (1)Cold Regions Research and Engineering Laboratory Alaska, Fort Wainwright, AK, United States, (2)Cold Regions Research and Engineering Laboratory (CRREL), Fort Wainwright, AK, United States, (3)Lawrence Berkeley National Laboratory, Berkeley, CA, United States, (4)Stanford University, Stanford, CA, United States, (5)Lawrence Berkeley National Laboratory, Berkeley, United States, (6)Sandia National Laboratories, Geophysics & Atmospheric Sciences, Albuquerque, NM, United States, (7)Lawrence Berkeley Lab, Berkeley, CA, United States, (8)Rice University, Department of Earth, Environmental, and Planetary Sciences, Houston, TX, United States
3D Volume and Morphology of Perennial Cave Ice and Related Geomorphological Models at Scărișoara Ice Cave, Romania, from Structure from Motion, Ground Penetrating Radar and Total Station Surveys (295759)
Jackson Hubbard1, Bogdan P. Onac2, Sarah Kruse3 and Ferenc L Forray2, (1)University of South Florida Tampa, Tampa, FL, United States, (2)Babeș-Bolyai University, Geology, Cluj-Napoca, Romania, (3)University of South Florida, Tampa, United States
Landsat time series analysis documents beaver migration into permafrost landscapes of arctic Alaska (260534)
Benjamin M Jones, USGS Alaska Science Center, Anchorage, AK, United States, Ken D Tape, University of Alaska Fairbanks, Fairbanks, AK, United States, Ingmar Nitze, Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Potsdam, Potsdam, Germany, Christopher D Arp, University of Alaska Fairbanks, Water and Environmental Research Center, Fairbanks, United States, Guido Grosse, Alfred Wegener Institute Helmholtz Center for Polar and Marine Research, Permafrost Research Section, Potsdam, Germany and Christian E. Zimmerman, Alaska Science Center, U.S. Geological Survey, Anchorage, AK, United States

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