The deadline to submit a session, town hall, or pre-conference workshop proposal for AGU25 has passed. Please search for and review proposed sessions below. Please note this site is frozen as of 4/29/25 and will not reflect any changes to proposals made after this date.


Conveners will be contacted by the AGU25 Program Committee with any requests for mergers or edits to proposals. Conveners will be notified of the acceptance of their proposal in mid-June.


Abstract submissions will also open in mid-June and the deadline for abstract submissions is 30 July, 2025.


Please visit the AGU25 website for more information or please contact AGU with any questions.

Session Proposal: Measuring and Modeling the Role of Roots and Belowground Processes in Biogeochemical Cycles (AGU25)

B061
Measuring and Modeling the Role of Roots and Belowground Processes in Biogeochemical Cycles

Session ID#: 248706

Session Description:
Roots play a key role in biogeochemical cycling, hydrologic patterns, and soil carbon (C) formation across terrestrial ecosystems. However, rhizosphere processes are sensitive to rising atmospheric CO2, land use and land cover change, changing hydrologic conditions, and other disturbances. Feedbacks between roots, root-associated microbes, and changing soil ecosystems could buffer or enhance biogeochemical change and therefore present a critical avenue of research. Furthermore, many of these feedbacks have little to no representation in land surface models. Given the difficulties of studying and modeling roots, our understanding of roots and their role in biogeochemical cycles is still nascent. In this session, our goal is to synthesize our present understanding of root patterns and processes, their roles in biogeochemical cycles, and their responses to change and disturbance. We invite contributions that expand our understanding of root dynamics, root-associated microbes and processes, and that highlight crucial steps for the future of belowground research.
Index Terms:

0414 Biogeochemical cycles, processes, and modeling [BIOGEOSCIENCES]
0476 Plant ecology [BIOGEOSCIENCES]
0486 Soils/pedology [BIOGEOSCIENCES]
1630 Impacts of global change [GLOBAL CHANGE]
Primary Convener:  Emma Hauser, University of Wisconsin Madison, Forest and Wildlife Ecology, Madison, WI, United States
Conveners:  Avni Malhotra, Pacific Northwest National Laboratory, Richland, WA, United States, M. Luke McCormack, The Morton Arboretum, Center for Tree Science, Lisle, IL, United States and Shersingh Joseph Tumber-Dávila, Dartmouth College, Environmental Studies, Hanover, United States
 
A Continental Scale Analysis Reveals Widespread Root Bimodality (Invited) (1863313)
Mingzhen Lu, New York University, New York, NY, United States, Sili Wang, Columbia University, New York, United States, Avni Malhotra, Pacific Northwest National Laboratory, Richland, WA, United States, Shersingh Joseph Tumber-Dávila, Dartmouth College, Environmental Studies, Hanover, United States, Samantha R Weintraub-Leff, National Ecological Observatory Network, Battelle, Boulder, United States, M. Luke McCormack, The Morton Arboretum, Center for Tree Science, Lisle, IL, United States, Dr. Xingchen Tony Wang, PhD, Boston College, Department of Earth and Environmental Sciences, Chestnut Hill, MA, United States and Robert B Jackson, Stanford University, Earth System Science, Stanford, United States
 
Resolving the Paradox of Post-fire Forest Recovery in the Greater Yellowstone Ecosystem: The Importance of Subsurface Nitrogen Cycling (1873872)
Robert Heumann, University of Montana, Missoula, MT, United States, Monica Turner, University of Wisconsin Madison, Madison, United States and Cory C. Cleveland, University of Montana, Department of Ecosystem and Conservation Sciences, Missoula, MT, United States
 
In Situ Changes of Rhizosphere Hydraulics Associated with Root Exudates (1890080)
Gal Tzvik, Hebrew University of Jerusalem, Soil and Water Sciences, Jerusalem, Israel, Yael Mishael, Hebrew University of Jerusalem, Soil and Water Sciences, Rehovot, Israel and Nimrod Schwartz, Technion Israel Institute of Technology, Haifa, Israel
 
Root exudation rates in mature trees: In search of first-principles controls and ecosystem impacts (1893220)
Richard P Phillips1, Young Oh2, Thomas Muratore3, Nikhil R Chari4, Serita D Frey5, Meghan Midgley6 and Benton Taylor4, (1)Indiana University Bloomington, Department of Biology, Bloomington, IN, United States, (2)Indiana University Bloomington, Department of Biology, Bloomington, United States, (3)Dartmouth College, Environmental Studies, Hanover, United States, (4)Harvard University, Organismic and Evolutionary Biology, Cambridge, United States, (5)University of New Hampshire, Natural Resources and the Environment, Durham, United States, (6)The Morton Arboretum, Center for Tree Science, Lisle, IL, United States
 
Tracing the effects of a deep-rooted grass, Panicum virgatum L., on soil organic carbon cycling in a range of environments across the USA (1895990)
Eric Slessarev1,2, Jennifer Pett-Ridge3, Kyungjin Min4, Asmeret Asefaw Berhe5, Dr. Srabani Das6, Randall Jackson7, Julie D Jastrow8, Karis J McFarlane9, Megan Kan9, Todd Longbottom10, Erik Oerter3, G Philip Robertson11, Gregg Sanford12, Brian Richards13 and Erin E Nuccio14, (1)Yale University, Yale Center for Natural Carbon Capture, New Haven, CT, United States, (2)Yale University, Department of Ecology and Evolutionary Biology, New Haven, United States, (3)Lawrence Livermore National Laboratory, Physical and Life Sciences Directorate, Livermore, CA, United States, (4)Seoul National University, Agricultural Biotechnology, Seoul, South Korea, (5)University of California Merced, Life and Environmental Sciences, Merced, United States, (6)University of California Agriculture and Natural Resources, UC Merced, Merced, United States, (7)University of Wisconsin Madison, Department of Plant and Agroecosystem Sciences, Madison, United States, (8)Argonne National Laboratory, Environmental Science Division, Argonne, IL, United States, (9)Lawrence Livermore National Laboratory, Livermore, United States, (10)ExxonMobil Spring, Spring, United States, (11)Michigan State University, WK Kellogg Biological Station, Hickory Corners, United States, (12)University of Wisconsin Madison, Madison, United States, (13)Cornell University, Ithaca, United States, (14)Lawrence Livermore National Laboratory, Physical and Life Sciences Directorate, Livermore, United States
 
Spatial and Temporal Metabolic Reprogramming of Roots and Rhizosphere: Interactions with Microbial Communities under Controlled and Field Conditions (1921605)
Amir H. Ahkami1, Jayde Aufrecht2, Kevin Zemaitis1, Duan Velickovic3, Tanya E Winkler1, Sneha P Couvillion4, Vimal Balasubramanian3, Daisy Herrera1, Cayden Perdue1, Robert Tournay5 and Sharon Doty5, (1)Pacific Northwest National Laboratory, Richland, United States, (2)Pacific Northwest National Laboratory, Earth and Biological Sciences Directorate, Richland, United States, (3)Pacific Northwest National Laboratory, Environmental Molecular Sciences Laboratory, Richland, United States, (4)Pacific Northwest National Laboratory, Earth and Biological Sciences Directorate, Sequim, United States, (5)University of Washington, Seattle, United States
 
Belowground Dynamics Shape the Response of Peatland Biogeochemistry to Warming and Elevated CO2 (Invited) (1953662)
Verity G Salmon1, Joanne Childs2, Hanson Paul1, Dr. Colleen M. Iversen, PhD1, John Latimer3, Avni Malhotra4, Kathleen Julian1, Richard J. Norby5, Jeff Warren6, Tinsley Stewart1, Soren Weber2, David J Weston7, Xiaojuan Yang5 and Melanie A Mayes8, (1)Oak Ridge National Laboratory, Oak Ridge, United States, (2)Oak Ridge National Laboratory, Climate Change Science Institute and Environmental Sciences Division, Oak Ridge, TN, United States, (3)XCEL Engineering, Oak Ridge, TN, United States, (4)Pacific Northwest National Laboratory, Richland, WA, United States, (5)Oak Ridge National Lab, Oak Ridge, TN, United States, (6)Oak Ridge National Laboratory, Environmental Sciences Division, Oak Ridge, TN, United States, (7)Oak Ridge National Laboratory, Oak Ridge, TN, United States, (8)ORNL, Environmental Science Division, Oak Ridge, United States
 
ELM-TAM: a structure-based, function-oriented land model embracing fine-root system complexity (1955781)
Bin Wang, Oak Ridge National Laboratory, Oak Ridge, United States, Daniel M Ricciuto, Oak Ridge National Laboratory, Environmental Sciences Division, Oak Ridge, United States, M. Luke McCormack, The Morton Arboretum, Center for Tree Science, Lisle, IL, United States, Xiaojuan Yang, Oak Ridge National Lab, Oak Ridge, TN, United States, Min Xu, Oak Ridge National Laboratory, Climate Change Science Institute, Oak Ridge, United States and Forrest M Hoffman, Oak Ridge National Lab, Oak Ridge, United States
 
Root Exudation Persists under Nighttime Hydraulic Redistribution for Zea mays. (Invited) (1958113)
Fiona Ellsworth, University at Buffalo, Earth Sciences, Buffalo, NY, United States, Duan Velickovic, Pacific Northwest National Laboratory, Environmental Molecular Sciences Laboratory, Richland, United States, Angela Ruth Possinger, Virginia Tech, School of Plant and Environmental Sciences, Blacksburg, United States, David Scott Mackay, University at Buffalo, Department of Geography, Buffalo, NY, United States, Mitchell Hitchcock, University at Buffalo, Environment and Sustainability, Buffalo, United States and Richard Marinos, University at Buffalo, Earth Sciences, Buffalo, United States
 
In Situ Measurements of H2 from Biological Nitrogen Fixation Near the Roots of Legumes (1968758)
Fangzhou Guo1, Elizabeth Lunny2, Joanne H Shorter2 and Joseph R Roscioli2, (1)Aerodyne Research Inc., Billerica, MA, United States, (2)Aerodyne Research Inc., Billerica, United States
 
Getting to the root of drought: Integrating multi-omic root exudate and rhizosphere microbiome data with aboveground plant responses to drought (1973459)
A. Peyton Smith, Texas A&M University College Station, Department of Soil and Crop Sciences, College Station, TX, United States, Harrison R Coker, Texas A&M University, Soil and Crop Sciences, College Station, United States, Heng-An Lin, Texas A&M University College Station, Soil and Crop Sciences, College Station, TX, United States, Caleb Shackelford, Texas A&M University College Station, College Station, TX, United States, Rachel Watters, Texas A&M University, College Station, United States, Malak Tfaily, The University of Arizona, Department of Environmental Science, Tucson, United States and Julie A. Howe, Texas A&M University, Soil and Crop Sciences, College Station, TX, United States
 
Fertilization Alters Plant and Microbial Drought Responses in Miscanthus (1975669)
Ronald Schartiger1, Jennifer Kane1, Rebecca Ozbolt2, Damon LeMaster3, Nicolas Doza Lopez4 and Ember Morrissey5, (1)West Virginia University, Department of Biology, Morgantown, United States, (2)West Virginia University, Division of Plant and Soil Sciences, Morgantown, United States, (3)West Virginia University, School of Natural Resources and the Environment, Morgantown, United States, (4)West Virginia University, Biology, Morgantown, United States, (5)West Virginia University, Department of Biology, Morgantown, WV, United States
 
Getting to the root of drought: Isolating the microbial response to Gossypium hirsutem root exudate shifts during drought (1976358)
Rachel Watters1, Harrison R Coker2, Caleb Shackelford1, Julie A. Howe3 and A. Peyton Smith4, (1)Texas A&M University College Station, College Station, TX, United States, (2)Texas A&M University, Soil and Crop Sciences, College Station, United States, (3)Texas A&M University, Soil and Crop Sciences, College Station, TX, United States, (4)Texas A&M University College Station, Soil and Crop Science, College Station, TX, United States
 
Incorporating Root Water Uptake Dynamics for Improved Evapotranspiration Modeling in Groundwater-Dependent Ecosystems (1976399)
Sara Cerasoli1, Bryn Morgan2 and César Terrer2, (1)Massachusetts Institute of Technology, Civil and Environmental Engineering, Cambridge, MA, United States, (2)Massachusetts Institute of Technology, Cambridge, United States
 
Salty roots, fewer toots? The influence of salinity on radial oxygen loss in Typha angustifolia. (1978342)
Ilana Stein1, Inke Forbrich2, Suzanne Michelle Thomas1 and Zoe G Cardon1, (1)Marine Biological Laboratory, Ecosystems Center, Woods Hole, MA, United States, (2)University of Toledo, Department of Environmental Sciences, Toledo, OH, United States
 
Linking fertilization-driven root trait plasticity to plant-microbe interactions in a Miscanthus x giganteus bioproduct agroecosystem (1983615)
Jennifer Kane1, Ronald Schartiger1, Damon LeMaster2, Edward R Brzostek1 and Ember Morrissey3, (1)West Virginia University, Department of Biology, Morgantown, United States, (2)West Virginia University, School of Natural Resources and the Environment, Morgantown, United States, (3)West Virginia University, Department of Biology, Morgantown, WV, United States
 
Effects of Root Suberin Enrichment on Decomposition and Soil Carbon Storage (1985931)
Adrianne Seiden1, Stephany Soledad Chacon2, Ashish Rajurkar3, Melisa Quintana2, Wolfgang Busch4 and Asmeret Asefaw Berhe2, (1)University of California Merced, Life and Environmental Sciences, Merced, CA, United States, (2)University of California Merced, Life and Environmental Sciences, Merced, United States, (3)Salk Institute for Biological Studies, Plant Molecular and Cellular Biology Laboratory, La Jolla, CA, United States, (4)Salk Institute for Biological Studies, Plant Molecular and Cellular Biology Laboratory, La Jolla, United States
 
Root System Plasticity Under Drought: Deep Foraging Without Carbon Penalty in Citrullus colocynthis (1993355)
Amnon Cochavi, Agricultural Research Organization Volcani Center, Bet-Dagan, Israel, Or Emma Shemer, agricultural Research Organization Volcani Center, Ramat Yishau, Israel, Asaf Distelfeld Sr., University of Haifa, Evolutionary and Environmental Biology, Haifa, Jamaica and Amnon Levi, USDA ARS, Charleston, United States
 
Will winter climate change alter soil carbon turnover and stabilization in the rhizosphere? (1994666)
Joanna Ruth Ridgeway, West Virginia University, Morgantown, WV, United States, Josephine Duffy, Dartmouth College, Hanover, United States and Caitlin Hicks Pries, Dartmouth College, Department of Biological Sciences, Hanover, United States
 
Sagebrush root metabolites reveal the strategy of phosphorus and iron uptake by shallow and deep roots (2002909)
Langlang Li1, Nathalie Munoz2, Duan Velickovic2, Wenming Dong3, Elizabeth K Eder4, Yarong Qi5, Patrick Sorensen6, Shi Wang6, John Neil Christensen7,8, Markus Bill9, Eoin Brodie8, Kenneth Hurst Williams8, Jillian F Banfield10 and Benjamin Gilbert11, (1)University of California Berkeley, Earth and Planetary Science, Berkeley, United States, (2)Pacific Northwest National Laboratory, Environmental Molecular Sciences Laboratory, Richland, United States, (3)Lawrence Berkeley National Lab, Berkeley, United States, (4)Pacific Northwest National Laboratory, Environmental Molecular Sciences Laboratory, Richland, WA, United States, (5)University of California Berkeley, Department of Environmental Science, Policy, and Management, Berkeley, CA, United States, (6)Lawrence Berkeley National Laboratory, Earth and Environmental Sciences Area, Berkeley, CA, United States, (7)Lawrence Berkeley Natl Lab, Berkeley, CA, United States, (8)Lawrence Berkeley National Laboratory, Earth and Environmental Sciences Area, Berkeley, United States, (9)Lawrence Berkeley National Laboratory, Energy Geosciences Division, Berkeley, United States, (10)University of California, Berkeley, Earth and Planetary Science, Berkeley, United States, (11)Lawrence Berkeley National Laboratory, Berkeley, United States
See more of: Biogeosciences
<< Previous Session Proposal | Next Session Proposal >>