OOS 29 - Enhancing a Molecular Understanding of Soil Biogeochemistry from Local to Continental Scales

Organizer(s)

• MB

  Maggie Bowman

  Postdoctoral Researcher
  Environmental Molecular Science Laboratory and Pacific Northwest National Laboratory, United States

Co-Organizer(s)

• EG

  Emily Graham, Ecosystem Scientist

  Pacific Northwest National Laboratory
  Richland, WA, United States

Molecular processes that enable carbon and nutrient cycling in soils are heterogeneous across landscapes and through time. This spatiotemporal variability is an essential characteristic that supports ecosystem function, soil health, and organic matter processing. Yet, biogeochemical process variability is one of the most challenging characteristics to observationally capture at landscape scale. Traditional point-sampling methods that provide “high fidelity” biogeochemical observations represent infinitesimally small fractions of the landscape and vanishingly short periods of time. Moreover, detailed compositional information needed to support substrate-specific mechanistic modeling of organic carbon reactions generally is not available. The dearth of such information represents a major weakness in our ability to anticipate and model evolving soil biogeochemical status. Spatially and temporally resolved observational data are needed across landscapes. At the present, however, fixed field sensing instrumentation, sampling methodologies, geophysical, and remote sensing platforms generally do not exist as integrated capabilities. In this session, we will highlight recent advances in molecular understanding of soils and watersheds through space and time using high resolution measurement and modeling approaches.

Presentations:

• 3:30 PM – 3:45 PM PDT

  Disentangling soil organisms' metabolic responses and acclimation to environmental gradients through ecometabolomics
  

  Presenting Author: Malak M. Tfaily – University of Arizona

  Co-author: Viviana Freire zapata – University of Arizona

  Co-author: Christian Ayala-Ortiz – University of Arizona

  Co-author: Ghiwa Makke – University of Arizona

  Co-author: Sumudu Rajakaruna – University of Arizona
• 3:45 PM – 4:00 PM PDT

  Resolving the spatial-temporal variability of soil organic C and N across physical fractions: challenges and potential approaches
  

  Presenting Author: Sam Leuthold – Colorado State University

  Co-Author: M. Francesca Cotrufo, PhD, Professor – Colorado State University
• 4:00 PM – 4:15 PM PDT

  Molecular-scale mechanisms inform continental-scale patterns in soil carbon persistence and climate vulnerability
  

  Presenting Author: Angela Possinger – Virginia Tech School of Plant and Environmental Sciences

  Co-author: Brian D. Badgley – Virginia Tech School of Plant and Environmental Sciences

  Co-author: Maggie M. Bowman – Environmental Molecular Science Laboratory and Pacific Northwest National Laboratory

  Co-author: Adrian C. Gallo – Oregon State University

  Co-author: Jeff A. Hatten – Oregon State University

  Co-author: Katherine A. Heckman – USDA Forest Service

  Co-author: Lauren M. Matosziuk – Oregon State University

  Co-author: Lucas E. Nave – Michigan Technological University

  Co-author: Michael D. SanClements – National Ecological Observatory Network

  Co-author: Christopher W. Swanston – USDA Forest Service

  Co-author: William R. Wieder – National Center for Atmospheric Research

  Co-author: Brian D. Strahm – Virginia Tech Forest Resources and Environmental Conservation
• 4:15 PM – 4:30 PM PDT

  A continental view of the molecular composition of soil organic matter
  

  Presenting Author: Debjani Sihi – Emory University

  Co-author: Alexandra Cory – Emory University

  Co-author: Kevin Taylor Cyle – Emory University

  Co-author: Zhuonan Wang – Emory University
• 4:30 PM – 4:45 PM PDT

  Organic matter accumulation in biomass-amended agricultural soils
  

  Presenting Author: Amisha Poret-Peterson – USDA Agricultural Research Service

  Co-author: David Robles – Soils and Biogeochemistry Graduate Group, University of California Davis

  Co-author: Taniya RoyChowdhury – Woodwell Climate Research Center

  Co-author: Brent Holtz – University of California Agriculture and Natural Resources

  Co-author: Suduan Gao – USDA Agricultural Research Service

  Co-author: Mae Culumber – University of California Agriculture and Natural Resources
• 4:45 PM – 5:00 PM PDT

  Greatness in little things: NEON microbial ecology across time and space
  

  Presenting Author: Hugh Cross – National Ecological Observation Network

  Co-author: Samantha Weintraub – National Ecological Observatory Network