B34B:
Terrestrial and Aquatic Responses to Changing Climate and Disturbance Regimes in Arctic and Sub-Arctic Regions III


Session ID#: 8597

Session Description:
High latitude ecosystems are undergoing rapid change as climate warms and alters disturbance regimes, particularly wildfire, permafrost thaw and insect outbreaks. Our understanding of ecosystem responses to these changes is complicated by strong feedbacks between biota and biogeochemical cycling. Remote sensing, change detection, and chronosequence studies are used to study ecosystem function under current and historical disturbance regimes. These approaches often vary between upland, wetland, and lake systems.  Across all systems, patterns of interannual and seasonal variation are key knowledge gaps.  This is particularly challenging for identifying trajectories of change across the landscape. Presentations are invited using remote sensing, long-term studies, or process-level experiments to improve our understanding of changes in ecosystem structure and function, for example variations in carbon and nutrient cycling, in the north.  This session will enable synergies and future collaborations of researchers working across terrestrial and aquatic arctic systems at multiple spatial and temporal scales.
Primary Conveners:  Marion Syndonia Bret-Harte, University of Alaska Fairbanks, Fairbanks, AK, United States
Conveners:  Jeffrey R White, Indiana Univ-Environ Sciences, Bloomington, IN, United States, Merritt R Turetsky, University of Guelph, Guelph, ON, Canada and Thomas A Douglas, Cold Regions Research and Engineering Laboratory Alaska, Fort Wainwright, AK, United States
Chairs:  Merritt R Turetsky, University of Guelph, Guelph, ON, Canada and Thomas A Douglas, Cold Regions Research and Engineering Laboratory Alaska, Fort Wainwright, AK, United States
OSPA Liaisons:  Merritt R Turetsky, University of Guelph, Guelph, ON, Canada

Cross-Listed:
  • C - Cryosphere
  • GC - Global Environmental Change
Co-Sponsor(s):
  • IGBP: International Geosphere-Biosphere Programme -

Abstracts Submitted to this Session:

Cecilie Skov Nielsen1, Bo Elberling1,2, Anders Michelsen1,3, Bjarne W Strobel4, Katrine Wulff1 and Imre Banyasz1, (1)Center For Permafrost (CENPERM), Department of Geosciences and Nature Management, University of Copenhagen, Copenhagen, Denmark, (2)University of Copenhagen, Copenhagen, Denmark, (3)Copenhagen University, Department of Biology, Copenhagen, Denmark, (4)Department of Plant and Environmental Sciences, University of Copenhagen, Copenhagen, Denmark
Kathy Kelsey1, A. Joshua Leffler2, Karen H. Beard3, Ryan T. Choi3, Jeffrey M Welker1 and YK Delta Phenology and Grazing Experiment, (1)University of Alaska Anchorage, Anchorage, AK, United States, (2)South Dakota State University, Brookings, SD, United States, (3)Utah State University, Wildland Resources, Logan, UT, United States
A. Joshua Leffler1, Karen H. Beard2, Kathy Kelsey1, Ryan T. Choi2, Jeffrey M Welker1 and YK Delta Phenology and Grazing Experiment, (1)University of Alaska Anchorage, Anchorage, AK, United States, (2)Utah State University, Wildland Resources, Logan, UT, United States
Tyler J Hoecker1,2, Philip E Higuera2, Fengsheng Hu3 and Ryan Kelly4, (1)University of Idaho, Moscow, ID, United States, (2)University of Montana, Ecosystem and Conservation Sciences, Missoula, MT, United States, (3)University of Illinois, Department of Plant Biology, Urbana, IL, United States, (4)university of illinois, Urbana, IL, United States
Melissa L Chipman1, Courtney Reents1, Jonathan A Greenberg2 and Fengsheng Hu3, (1)University of Illinois at Urbana Champaign, Urbana, IL, United States, (2)University of Illinois at Urbana Champaign, Department of Geography and Geographic Information Science, Urbana, IL, United States, (3)University of Illinois, Department of Plant Biology, Urbana, IL, United States
Miriam Jones, U.S. Geological Survey., Reston, VA, United States, Jennifer W Harden, USGS Geological Survey, Menlo Park, CA, United States, Jonathan A O'Donnell, National Park Service Anchorage, Anchorage, AK, United States and Kristen Manies, USGS Western Regional Offices Menlo Park, Menlo Park, CA, United States
David Olefeldt, University of Alberta, Edmonton, AB, Canada, Nicolas Pelletier, University of Montreal, Montreal, QC, Canada, Julie Talbot, University of Montreal, Département de géographie & Geotop, Montreal, QC, Canada, Christian Blodau, University of Münster, Münster, Germany and Merritt R Turetsky, University of Guelph, Guelph, ON, Canada
Robert G Striegl1, Michelle A Walvoord2, Burke J Minsley3, Travis Drake1, George Aiken4 and Kimberly Wickland5, (1)USGS, National Research Program, Boulder, CO, United States, (2)USGS Central Region Office, Lakewood, CO, United States, (3)USGS, Denver, CO, United States, (4)USGS, Boulder, CO, United States, (5)US Geological Survey, Boulder, CO, United States

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