B41A:
Drivers of Vegetation Change and Impacts on Biogeochemical and Biogeophysical Processes in Arctic Tundra Ecosystems I Posters

Submit an Abstract to this Session



Session ID#: 31580

Session Description:
Arctic ecosystems are undergoing rapid change. Strong positive feedbacks to warming are possible in these ecosystems as carbon stored in permafrost soils is mobilized and evades to the atmosphere.  However, vegetation is also changing and could alter biogeochemical cycling and biophysical processes in a way that offsets permafrost carbon release. Understanding how vegetation will alter biogeochemical cycling and biophysical processes as climate warms will allow better prediction of the future states of these ecosystems.  Presentations are invited which use long term baseline studies, remote sensing, and process-level experiments to illustrate trends in vegetation and/or biogeochemical and biophysical feedbacks across different spatial and temporal scales, in order to enable prediction of future functional states of arctic ecosystems.  This session will provide a forum for researchers to link tundra vegetation science via remote sensing, phenology, population- and ecosystem- ecology to address ecological dynamics in high-latitude ecosystems, and to promote collaboration.
Primary Convener:  Marion Syndonia Bret-Harte, University of Alaska Fairbanks, Institute of Arctic Biology, Fairbanks, AK, United States
Conveners:  April M Melvin, National Academy of Sciences, Polar Research Board & Board on Atmospheric Sciences and Climate, Washington, DC, United States, Michelle C Mack, Northern Arizona University, Center for Ecosystem Science and Society, Flagstaff, AZ, United States and Howard E Epstein, University of Virginia, Environmental Sciences, Charlottesville, VA, United States
Chairs:  April M Melvin, National Academy of Sciences, Polar Research Board & Board on Atmospheric Sciences and Climate, Washington, DC, United States, Marion Syndonia Bret-Harte, University of Alaska Fairbanks, Institute of Arctic Biology, Fairbanks, AK, United States, Michelle C Mack, Northern Arizona University, Center for Ecosystem Science and Society, Flagstaff, AZ, United States and Howard E Epstein, University of Virginia, Environmental Sciences, Charlottesville, VA, United States
OSPA Liaison:  April M Melvin, National Academy of Sciences, Polar Research Board & Board on Atmospheric Sciences and Climate, Washington, DC, United States

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

0475 Permafrost, cryosphere, and high-latitude processes [BIOGEOSCIENCES]
0718 Tundra [CRYOSPHERE]
1632 Land cover change [GLOBAL CHANGE]
1640 Remote sensing [GLOBAL CHANGE]

Abstracts Submitted to this Session:

Effect of crustose lichen on soil CO2 efflux in sphagnum moss regime of tundra, west Alaska (206964)
Yongwon Kim, University of Alaska Fairbanks, Fairbanks, AK, United States, Sang-Jong Park, KOPRI Korea Polar Research Institute, Incheon, South Korea, Rikie Suzuki, Japan Agency for Marine-Earth Science and Technology, Department of Environmental Geochemical Cycle Research, Yokohama, Japan and Bang-Yong Lee, Korea Polar Research Institute, Division of Polar Climate Sciences, Incheon, South Korea
Influences of Moisture Regimes and Functional Plant Types on Nutrient Cycling in Permafrost Regions (207924)
Rachael E McCaully, North Carolina State University Raleigh, Raleigh, NC, United States, Carli A Arendt, Green River College, Geology, Auburn, United States, Brent D Newman, Los Alamos National Laboratory, Earth and Environmental Sciences Division, Los Alamos, United States, Jeffrey M Heikoop, LANL, Los Alamos, NM, United States, Cathy Jean Wilson, Los Alamos National Laboratory, Earth and Environmental Science Division, Los Alamos, NM, United States, Sanna Sevanto, Los Alamos National Laboratory, Los Alamos, United States, Nathan A Wales, Los Alamos National Laboratory, Los Alamos, NM, United States and Stan Wullschleger, Oak Ridge National Laboratory, Environmental Sciences Division and Climate Change Science Institute, Oak Ridge, United States
The Role of Biological Soil Crusts in Nitrogen Cycling and Soil Deflation in West Greenland (229282)
Ruth Chaves Heindel, Dartmouth College, Department of Earth Sciences, Hanover, United States; University of Colorado Boulder, Institute of Arctic and Alpine Research, Boulder, CO, United States, Francesca C Governali, Dartmouth College, Department of Earth Sciences, Hanover, NH, United States, Angela M Spickard, Dartmouth College, Environmental Studies Program, Hanover, NH, United States and Ross A Virginia, Dartmouth College, Department of Environmental Studies, Hanover, United States
Plant traits and trait-based vegetation modeling in the Arctic (233014)
Sanna Sevanto, Los Alamos National Laboratory, Los Alamos, United States, Chonggang Xu, Los Alamos National Laboratory, Earth and Environmental Sciences Division, Los Alamos, NM, United States, Colleen M. Iversen, Oak Ridge National Laboratory, Climate Change Science Institute and Environmental Sciences Division, Oak Ridge, United States, Dr. Colleen M. Iversen, PhD, Oak Ridge National Laboratory, Oak Ridge, United States, Alistair Rogers, Brookhaven National Laboratory, Environmental and Climate Sciences Department, Upton, United States, Stan Wullschleger, Oak Ridge National Laboratory, Environmental Sciences Division and Climate Change Science Institute, Oak Ridge, United States and Cathy Jean Wilson, Los Alamos National Laboratory, Los Alamos, NM, United States
Examining the role of shrub expansion and fire in Arctic plant silica cycling (236763)
Joanna Carey, Babson College, Math, Analytics, Science and Technology Division, Wellesley, United States, Ned Fetcher, Wilkes University, Institute for Environmental Science and Sustainability, Wilkes Barre, PA, United States, Thomas Parker, University of Stirling, Stirling, FK9, United Kingdom, Adrian V Rocha, University of Notre Dame, Department of Biological Sciences, Notre Dame, United States and Jianwu Tang, Marine Biological Laboratory, Woods Hole, MA, United States
Organic N cycling in Arctic ecosystems: Quantifying root uptake kinetics and temporal variability of soil amino acids. (244155)
Peter M Homyak1, Sadie L Iverson2, Eric Slessarev3, Ken Marchus4 and Joshua Schimel4, (1)University of California Riverside, Environmental Sciences, Riverside, CA, United States, (2)UC Santa Barbara, Santa Barbara, CA, United States, (3)Lawrence Livermore National Laboratory, Physical and Life Sciences Directorate, Livermore, United States, (4)University of California Santa Barbara, Santa Barbara, CA, United States
ARCTIC TUNDRA GREENING AND BROWNING AT CIRCUMPOLAR AND REGIONAL SCALES (253216)
Howard E Epstein, University of Virginia, Environmental Sciences, Charlottesville, VA, United States, Uma Suren Bhatt, University of Alaska Fairbanks, Fairbanks, AK, United States, Donald A Walker, University of Alaska Fairbanks, Alaska Geobotany Center, Fairbanks, AK, United States, Martha K Raynolds, University of Alaska Fairbanks, Institute of Arctic Biology, Fairbanks, AK, United States and Xi Yang, University of Virginia, Department of Environmental Sciences, Charlottesville, VA, United States
Constraints on High Northern Photosynthesis Increase Using Earth System Models and a Set of Independent Observations (253568)
Alexander J Winkler, Max Planck Institute for Biogeochemistry, Department of Biogeochemical Integration, Jena, Germany, Victor Brovkin, Max Planck Institute for Meteorology, Hamburg, Germany, Ranga Myneni, Boston University, Earth and Environment, Boston, MA, United States and Georgii Alexandrov, A.M.Obukhov Institute of Atmospheric Physics RAS, Moscow, Russia
Greening of Northern Hemisphere Cold Regions in Response to Permafrost Changes (254666)
Oliver W Frauenfeld, Texas A&M University, College Station, TX, United States, Xiaoqing Peng, LZU Lanzhou University, Key Laboratory of Western China's Environmental Systems（Ministry of Education), College of Earth and Environment Sciences, Lanzhou, China and Tingjun Zhang, LZU Lanzhou University, College of Earth and Environment Sciences, Lanzhou, China
Impacts of vegetation cover on soil respiration in a North Eastern Siberian tundra landscape (271877)
Salvatore Rex Curasi, University of Notre Dame, Department of Biological Sciences, Notre Dame, IN, United States, Adrian V Rocha, University of Notre Dame, Department of Biological Sciences, Notre Dame, United States and Susan Natali, Woods Hole Research Center, Falmouth, MA, United States
Research for annual travel-route changes of reindeer living around the Arctic Circle using satellite remote sensing (274917)
Genta Suzuki1, Takeru Sakka1, Tatsuya Tashiro1, Hiroshi Kawamata2, Shirow Tatsuzawa3, Nobuyasu Naruse2,4 and Yukihiro Takahashi5,6, (1)Hokkaido University, Global Science Campus, Sapporo, Japan, (2)Hokkaido University, Global Science Campus and Institute for the Advancement of Higher Education, Sapporo, Japan, (3)Hokkaido University, Graduate School of Letters, Sapporo, Japan, (4)Shiga University of Medical Science, Otsu, Japan, (5)Hokkaido University, Sapporo, Japan, (6)Hokkaido University, Graduate School of Science, Sapporo, Japan
Long-term fertilization, but not warming, shifts rates of ectomycorrhizal nutrient cycling in Arctic tussock tundra. (278687)
Haley Dunleavy, Northern Arizona University, Flagstaff, United States and Michelle C Mack, Northern Arizona University, Center for Ecosystem Science and Society, Flagstaff, AZ, United States
Belowground Plant Dynamics Across an Arctic Landscape (284914)
Verity G Salmon, Oak Ridge National Laboratory, Climate Change Science Institute and Environmental Sciences Division, Oak Ridge, TN, United States, Colleen M. Iversen, Oak Ridge National Laboratory, Climate Change Science Institute and Environmental Sciences Division, Oak Ridge, United States, Amy Lynn Breen, University of Alaska Fairbanks, International Arctic Research Center, Fairbanks, United States, Peter E Thornton, Oak Ridge National Laboratory, Environmental Sciences Division, Oak Ridge, United States and Stan Wullschleger, Oak Ridge National Laboratory, Environmental Sciences Division and Climate Change Science Institute, Oak Ridge, United States
Changes in arctic and boreal ecosystem productivity in response to changes in growing season length (291165)
Gabriel Hmimina, University of Nebraska Lincoln, School of Nature Resources, Lincoln, NE, United States, Rong Yu, University of Nebraska - Lincoln, School of Natural Resources, Lincoln, NE, United States, David P Billesbach, University of Nebraska - Lincoln, Biological Systems Engineering, Lincoln, NE, United States, Karl F Huemmrich, NASA Goddard Space Flight Cen., Greenbelt, United States and John Arthur Gamon, University of Nebraska-Lincoln, Lincoln, United States

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