2017 ESA Annual Meeting (August 6 -- 11)

OOS 24 - Permafrost Microbial Ecology and Climate Change

Wednesday, August 9, 2017: 8:00 AM-11:30 AM
Portland Blrm 258, Oregon Convention Center
Organizer:
Neslihan Tas
Co-organizer:
Rachel Mackelprang
Moderator:
David Myrold
The impact of rising global temperatures on the fate of carbon in permafrost ecosystems is a serious concern. In the Arctic, permafrost soils contain an enormous reservoir of carbon; in a warmer climate permafrost thaw is expected to lead to carbon losses through microbial decomposition. Microbes are key players in every biogeochemical cycle, including regulation of greenhouse gas fluxes between ecosystems and the atmosphere. Despite their critical role, our knowledge of microbial responses to environmental change is limited, and microbial dynamics are only beginning to be represented in ecosystem models. Recent advances in molecular biological methods, namely –omics technologies, are expanding our knowledge of microbial functions and activity in permafrost ecosystems. Combined with field observations and lab-scale manipulation experiments –omics technologies make it possible to identify the microbes and their functions that govern permafrost biogeochemical cycles critical to climate. Today, we find ourselves at the frontier of sequencing, proteomics and metabolomics technologies where new information from DNA, RNA, proteins and metabolites is being produced at unprecedented scales. Within this wealth of information lie key insights into microbial metabolism, revealing microbial responses to a changing environment and identifying key linkages between microbial functions and ecosystem responses. In this proposed session, we bring together investigators who are using variety of –omics tools methods in combination with detailed measurements of biogeochemistry to disentangle the links between permafrost microbial communities and ecosystem feedbacks to climate. By bringing together researchers who are experts in these techniques, we hope to highlight the strengths and bottlenecks of multi-omics approaches and present how these state of the art technologies enable us to gain molecular insights and to extrapolate microbial feedbacks to climate.
8:00 AM
Life below zero: Linking microbial growth dynamics with greenhouse gas production during winter in recently thawed permafrost soil
Steven J. Blazewicz, Lawrence Livermore National Laboratory; Richard A. White III, Pacific Northwest National Laboratory; Neslihan Tas, Lawrence Berkeley National Laboratory; Eugenie Euskirchen, University of Alaska Fairbanks; Jack McFarland, US Geological Survey; Janet K. Jansson, Pacific Northwest National Laboratory; Mark P. Waldrop, US Geological Survey
8:20 AM
Microbial constraints on the release of methane from thawing permafrost
Susanne Liebner, GFZ German Research Centre for Geosciences; Matthias Winkel, GFZ German Research Centre for Geosciences; Pier Paul Overduin, Alfred Wegener Institute for Polar and Marine Research; Julia Mitzscherling, GFZ German Research Centre for Geosciences; Christian Lehr, Leibniz Centre for Agricultural Landscape Research ZALF; Michael Fritz, Alfred Wegener Institute for Polar and Marine Research; Jaroslav Obu, University of Oslo; Hugues Lantuit, Alfred Wegener Institute for Polar and Marine Research; Joanne Heslop, University of Alaska Fairbanks; Katey Walter Anthony, University of Alaska Fairbanks; Fabian Horn, GFZ German Research Centre for Geosciences; Stine Holm, GFZ German Research Centre for Geosciences; Dirk Wagner, GFZ German Research Centre for Geosciences; Kai Mangelsdorf, GFZ German Research Centre for Geosciences; Christian Knoblauch, University of Hamburg
9:00 AM
Multiomics and single-cell genomics along a thaw gradient of Alaskan permafrost reveal microbial survival strategies
Jenni Hultman, University of Helsinki; Mark P. Waldrop, US Geological Survey; Janet K. Jansson, Pacific Northwest National Laboratory
9:20 AM
Soil redox conditions are a strong determinant of microbial community composition and the fate of carbon following permafrost thaw
James C. Stegen, Pacific Northwest National Laboratory; Eric Bottos, Pacific Northwest National Laboratory; Janet K. Jansson, Pacific Northwest National Laboratory; Lisa M Bramer, Pacific Northwest National Laboratory; Young-Mo Kim, Pacific Northwest National Laboratory; Sarah Fansler, Pacific Northwest National Laboratory; Carrie D Nicora, Pacific Northwest National Laboratory; Erika M. Zink, Pacific Northwest National Laboratory; Rosalie Chu, Environmental Molecular Sciences Laboratory; Malak M. Tfaily, Pacific Northwest National Laboratory; Tom Metz, Pacific Northwest National Laboratory
9:40 AM
9:50 AM
Strategies for carbon metabolism and survival in permafrost: Insights from microbial -omics
Rachel Mackelprang, California State University, Northridge; Robert Spencer, Florida State University; David C. Podgorski, Florida State University; Mark P. Waldrop, US Geological Survey; Thomas Douglas, Cold Regions Research and Engineering Laboratory
10:10 AM
Deep look into deep permafrost: Impact of warming on microbial functions
Neslihan Tas, Lawrence Berkeley National Laboratory; Yuxin Wu, Lawrence Berkeley National Laboratory; Craig Ulrich, Lawrence Berkeley National Laboratory; Baptiste Dafflon, Lawrence Berkeley National Laboratory; Susannah G. Tringe, Berkeley National Laboratory; Susan Hubbard, Lawrence Berkeley National Laboratory; Janet K. Jansson, Pacific Northwest National Laboratory
10:30 AM
Microbial mechanisms of carbon losses following permafrost thaw
Mark P. Waldrop, US Geological Survey; Kristen L. Manies, U.S. Geological Survey; Miriam Jones, US Geological Survey; Jack McFarland, US Geological Survey; Steve Blazewicz, Lawrence Livermore National Laboratory; Monica Haw, US Geological Survey; Rebecca B. Neumann, University of Washington
10:50 AM
Microbial communities in active layers of peat soil permafrost ecosystems and their response to temperature
Alexander Tøsdal Tveit, The Arctic University of Norway; Mette Marianne Svenning, UiT The Arctic University of Norway