B086
Microbial and Biogeochemical Dynamics in the Cryosphere I

Monday, 14 December 2020: 11:30-12:30
Virtual
Primary Convener:  Loeka Jongejans, Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Potsdam, Potsdam, Germany
Conveners:  Lisa Bröder1, Jon Hawkings2,3 and Matthias Winkel3, (1)Vrije Universiteit Amsterdam, Amsterdam, Netherlands(2)Florida State University, Earth, Ocean and Atmospheric Science, Tallahassee, FL, United States(3)Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences, Potsdam, Germany
Primary Liaison:  Matthias Winkel, Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences, Potsdam, Germany
Chairs:  Loeka Jongejans, Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Potsdam, Potsdam, Germany and Matthias Winkel, Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences, Potsdam, Germany
OSPA Liaison:  Lisa Bröder, Vrije Universiteit Amsterdam, Amsterdam, Netherlands
11:30
The biogeochemistry of subglacial systems (Invited) (737474)
Ashley Dubnick, University of Alberta, Earth and Atmospheric Sciences, Edmonton, AB, Canada, Martin J Sharp, Univ Alberta, Edmonton, AB, Canada, Brad Danielson, University of Alberta, Edmonton, AB, Canada, Alireza Saidi-Mehrabad, University of Alberta, Department of Biological Sciences, Edmonton, AB, Canada and Joel D Barker, University of Minnesota, Minneapolis, MN, United States
11:34
Revealing unknown carbon turnover processes in the subglacial ecosystem using high frequency gas measurements and stable isotopes (680642)
Jesper Riis Christiansen, University of Copenhagen, Department of Geosciences and Natural Resource Management, København K, Denmark, Thomas Röckmann, Utrecht University, Utrecht, Netherlands, Elena Popa, Utrecht University, Utrecht, 3584, Netherlands, Célia Julia Sapart, Université Libre de Bruxelles, Brussel, Belgium and Christian Juncher Jørgensen, Aarhus University, Department of Bioscience, Arctic Environment, Aarhus C, Denmark
11:38
Glacial outburst floods sustain microbial ecosystem in Lake Untersee, Antarctica (662877)
Benoit Faucher1, Nicole B. Marsh2, Denis Lacelle1, Liam Jaspere2, Ian Douglas Clark3 and Dale T Andersen4, (1)University of Ottawa, Department of Geography, Environment and Geomatics, Ottawa, ON, Canada, (2)University of Ottawa, Department of Earth and Environmental Sciences, Ottawa, Canada, (3)University of Ottawa, Department of Earth and Environmental Sciences, Ottawa, ON, Canada, (4)SETI Institute Mountain View, Mountain View, CA, United States
11:42
Influence of past climate change on subglacial microbial communities and biogeochemical processes beneath Siple Coast ice streams, West Antarctica (749093)
Christina Davis1, Amanda Achberger2, Joel D Barker3, Timothy Campbell4, John E Dore5, David M Harwood6, Jon Hawkings7, Ok-Sun Kim8, Amy Leventer9, Alexander B Michaud10,11, Molly O'Rourke Patterson12, John C Priscu13, Brad E Rosenheim14, Mark L Skidmore4, August Steigmeyer10, Ryan Venturelli15, Brent Christner1 and SALSA Science Team, (1)University of Florida, Microbiology and Cell Science, Ft Walton Beach, FL, United States, (2)Texas A&M University, Oceanography, College Station, TX, United States, (3)University of Minnesota, Minneapolis, MN, United States, (4)Montana State University, Earth Sciences, Bozeman, MT, United States, (5)Montana State University, Department of Land Resources and Environmental Sciences, Bozeman, MT, United States, (6)University of Nebraska Lincoln, Lincoln, NE, United States, (7)Florida State University, Earth, Ocean and Atmospheric Science, Tallahassee, FL, United States, (8)Korea Polar Research Insitute, Incheon, South Korea, (9)Colgate University, Geology, Hamilton, NY, United States, (10)Montana State University, Bozeman, MT, United States, (11)Bigelow Lab for Ocean Sciences, East Boothbay, ME, United States, (12)Binghamton University, Binghamton, NY, United States, (13)Montana State University, Land Resources and Environmental Science, Bozeman, MT, United States, (14)University of South Florida St. Petersburg, College of Marine Science, St Petersburg, FL, United States, (15)University of South Florida, St Petersburg, United States
11:46
Microbial biogeochemistry and nutrient limitations in cryoconite hole sediments across the Taylor Dry Valley, Antarctica (762141)
Steven K Schmidt, Univ Colorado, Ecology and Evolutionary Biology, Boulder, CO, United States, Pacifica Sommers, University of Colorado, Boulder, Ecology and Evolutionary Biology, Boulder, CO, United States, Benjamin W Johnson, Iowa State University, Atmospheric and Geological Sciences, Ames, IA, United States, Andrew G Fountain, Portland State University, Geology, Portland, OR, United States, Dorota Porazinska, University of Florida, Department of Entomology and Nematology, Gainesville, United States, Adam Solon, University of Colorado, Boulder, United States, Felix Jacob Zamora, Portland State University, Geology, Portland, ND, United States and John L Darcy, University of Colorado, Denver, United States
11:50
The role of changing temperature in microbial metabolic processes during permafrost thaw (744324)
Robyn Barbato1, Komi S Messan2, Robert M Jones1, Stacey Jarvis Doherty1 and Thomas Douglas3, (1)U.S. Army Cold Regions Research and Engineering Laboratory, Hanover, NH, United States, (2)NIH, Bethesda, MD, United States, (3)Cold Regions Research and Engineering Laboratory Alaska, Fort Wainwright, AK, United States
11:54
GDGTs in Canadian Arctic lakes: insight into the methane cycle and climatic changes (721729)
Julie Lattaud1, Cindy De Jonge2, Felix J Elling3, Ann Pearson3 and Timothy I Eglinton4, (1)ETH Swiss Federal Institute of Technology Zurich, Zurich, Switzerland, (2)University of Antwerp, Biology, Wilrijk, Belgium, (3)Harvard University, Earth and Planetary Sciences, Cambridge, MA, United States, (4)ETH Zurich, Geological Institute, Zurich, Switzerland
11:58
Linking glacial melt to downstream ecosystem function and health in the Canadian High Arctic (Invited) (685925)
Kyra St. Pierre1,2, Vincent L St.Louis3, Igor Lehnherr3, Jessica A. Serbu3, Maria Cavaco3, Derek Muir4 and Sherry L Schiff5, (1)University of Alberta, Department of Biological Sciences, Edmonton, AB, Canada, (2)University of British Columbia, Hakai Coastal Initiative, Institute for the Oceans and Fisheries, Vancouver, BC, Canada, (3)University of Alberta, Edmonton, AB, Canada, (4)Environment and Climate Change Canada, Burlington, ON, Canada, (5)Univ of Waterloo, Waterloo, ON, Canada
12:02
Discussion
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