B44B:
Biogeochemical Cycling in the Cryosphere III

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Session ID#: 15385

Session Description:
The cryosphere is home to Earth’s frozen systems including glaciers, ice sheets, seasonal snow cover, permafrost, and sea ice. It is an integral part of the global climate system and is wasting at a rapid rate due to warming. The cryosphere has been identified as an important component of biogeochemical cycles at local to global scales, and understanding how cryospheric changes are impacting biogeochemical cycles is critical for anticipating future trajectories. Here we focus on micro- to macro- scale cryosphere-biogeochemical linkages in the past, present and future. We particularly encourage contributions focusing on carbon and nutrient cycling responses and feedbacks.  This highly multidisciplinary session brings together a diverse range of scientists with interests spanning microbiology, biogeochemistry, glaciology, hydrology and oceanography of the coldest places on Earth to debate our current understanding and recent advances.
Primary Convener:  Jon Hawkings, University of Bristol, School of Geographical Sciences, Bristol, BS8, United Kingdom
Conveners:  Marek Stibal, Charles University, Department of Ecology, Prague, Czech Republic, Robert G Spencer, Florida State University, Department of Earth, Ocean and Atmospheric Sciences, Tallahassee, FL, United States and James W McClelland, University of Texas at Austin, Marine Science Institute, Austin, TX, United States
Chairs:  Jon Hawkings, University of Bristol, School of Geographical Sciences, Bristol, BS8, United Kingdom and Marek Stibal, Charles University, Department of Ecology, Prague, Czech Republic
OSPA Liaison:  Marek Stibal, Charles University, Department of Ecology, Prague, Czech Republic

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

0414 Biogeochemical cycles, processes, and modeling [BIOGEOSCIENCES]
0428 Carbon cycling [BIOGEOSCIENCES]
0470 Nutrients and nutrient cycling [BIOGEOSCIENCES]
0475 Permafrost, cryosphere, and high-latitude processes [BIOGEOSCIENCES]

Abstracts Submitted to this Session:

Export of Organic Matter and Microbes from the Greenland Ice Sheet: Sources, Composition, and Downstream Implications (133946)
Tyler J Kohler1, Jakub Dan Zarsky1, Karen Cameron2,3, Guillaume Lamarche-Gagnon4, Jon Hawkings5, Jon Telling6, Andrew Tedstone5,7, Jemma Wadham8, Carsten Suhr Jacobsen3,9, Jacob C Yde10 and Marek Stibal1, (1)Charles University, Department of Ecology, Prague, Czech Republic, (2)Geological Survey of Denmark and Greenland, Department of Geochemistry, København K, Denmark, (3)University of Copenhagen, Center for Permafrost (CENPERM), København K, Denmark, (4)University of Bristol, School of Geographical Sciences, Bristol, United Kingdom, (5)University of Bristol, School of Geographical Sciences, Bristol, BS8, United Kingdom, (6)Newcastle University, Department of Civil Engineering and Geosciences, Tyne and Wear, United Kingdom, (7)University of Edinburgh, School of Geosciences, Edinburgh, United Kingdom, (8)University of Bristol, Bristol Glaciology Centre, Bristol, United Kingdom, (9)Aarhus University, Department of Environmental Science, Aarhus C, Denmark, (10)Sogn og Fjordane University College, Faculty of Engineering and Science, Sogndal, Norway
Continuous, Pulsed Export of Methane-Supersaturated Meltwaters from the Bed of the Greenland Ice Sheet (173370)
Guillaume Lamarche-Gagnon1, Jemma Wadham1, Alexander Beaton2, Peer Fietzek3, Kieran M Stanley4, Andrew Tedstone5, Barbara Sherwood Lollar6, Georges Lacrampe Couloume6, Jon Telling7, Elizabeth Bagshaw8, Jon Hawkings5, Tyler J Kohler9, Jakub Dan Zarsky9, Marek Stibal9 and Matthew C Mowlem2, (1)University of Bristol, School of Geographical Sciences, Bristol, United Kingdom, (2)National Oceanography Centre, Ocean Technology and Engineering Group, Southampton, United Kingdom, (3)Kongsberg Maritime Contros GmbH, Kiel, Germany, (4)University of Bristol, School of Chemistry, Bristol, United Kingdom, (5)University of Bristol, School of Geographical Sciences, Bristol, BS8, United Kingdom, (6)University of Toronto, Earth Sciences, Toronto, ON, Canada, (7)School of Geographical Sciences, University of Bristol, Bristol, United Kingdom, (8)School of Earth and Ocean Sciences, Cardiff University, Cardiff, United Kingdom, (9)Charles University, Department of Ecology, Prague, Czech Republic
Quantifying ocean and ice sheet contributions to nutrient fluxes in Sermilik Fjord, Southeast Greenland (191486)
Mattias Rolf Cape1, Fiammetta Straneo1, Nicholas Beaird1, Randie M Bundy2 and Matthew A Charette1, (1)Woods Hole Oceanographic Institution, Woods Hole, MA, United States, (2)Woods Hole Oceanographic Institution, Marine Chemistry and Geochemistry, Woods Hole, MA, United States
Extreme surface melting of the Greenland Ice Sheet increases growth potential for light-limited phytoplankton in the Labrador Sea (135977)
Hilde Oliver1, Hao Luo2, Renato M Castelao3, Gert van Dijken4, Kyle Stephen Mattingly5, Joshua J Rosen6, Thomas L Mote6, Kevin R Arrigo4, Asa K Rennermalm7, Marco Tedesco8 and Yager L Patricia9, (1)University of Georgia, Department of Marine Sciences, Athens, United States, (2)University of Georgia Athens, Athens, GA, United States, (3)University of Georgia, Marine Sciences, Athens, United States, (4)Stanford University, Earth System Science, Stanford, United States, (5)University of Wisconsin Madison, Space Science & Engineering Center, Madison, WI, United States, (6)University of Georgia, Athens, GA, United States, (7)Rutgers University, Geography, New Brunswick, United States, (8)Lamont-Doherty Earth Observatory, Palisades, NY, United States, (9)University of Georgia, Department of Marine Sciences, Athens, GA, United States
Diversity and commonalities in Antarctic subglacial microbial communities (Invited) (185599)
Jill Mikucki, University of Tennessee, Department of Microbiology, Knoxville, United States, Richard Campen, University of Tennessee, Microbiology, Knoxville, TN, United States, Slawek M Tulaczyk, University of California Santa Cruz, Earth and Planetary Sciences, Santa Cruz, CA, United States, William B Lyons, Ohio State University Main Campus, School of Earth Sciences, Columbus, United States, Kathleen Ann Welch, Ohio State Univ, Columbus, OH, United States, Peter A Lee, College of Charleston, Charleston, SC, United States, Alicia Purcell, University of Tennessee, Knoxville, TN, United States, Breanna Roets, Middlebury College, Middlebury, VT, United States and MIDGE and WISSARD Science Teams
Primary productivity of supraglacial snow algae communities on stratovolcanoes of the Pacific Northwest (119919)
Trinity L Hamilton, University of Minnesota Twin Cities, Plant and Microbial Biology, Minneapolis, United States and Jeff R Havig, University of Minnesota, Earth Sciences, Minneapolis, United States

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