2018 ESA Annual Meeting (August 5 -- 10)

OOS 24 - Plant-Soil Interactions Under Changing Climate

Wednesday, August 8, 2018: 1:30 PM-5:00 PM
345, New Orleans Ernest N. Morial Convention Center
Organizer:
Sanna Sevanto
Co-organizers:
Charlotte Grossiord and Danielle E. Marias
Moderator:
Sanna Sevanto
Often considered a “black box,” soils and processes occurring belowground are increasingly being acknowledged as major drivers of vegetation dynamics and have thus become an important research frontier in recent years. Changes in hydrological cycles, warming, and rising CO2 levels are likely to alter soil-plant interactions and their feedbacks to ecosystem functioning. Also, ecosystem resilience to upcoming climatic stresses will largely depend on interactions between above- and belowground processes. Water and nutrient resources available to belowground compartments determine plant growth and productivity, but plants also modify these resources via production of organic material and interactions with soil micro-organisms. These processes impact soil structure, nutrient availability and the carbon and nitrogen cycles in the soil, which are all linked to and feed back to plant wellbeing and resilience to environmental stress. The goal of this organized session is to bring together expertise on the interaction of above-and belowground processes, and their impact on plant and ecosystem resilience across ecosystems and scales. Presenters will discuss how interactions between aboveground and belowground processes such as root growth and structure, soil biodiversity, soil biota processes, and root-microbiome interactions influence plant nutrient use and aboveground physiology as well as resilience to climate change from the cellular to the landscape level. Understanding the interactions between soils and vegetation, and how plant-soil interactions feed back to plant resilience under climate change could open new ways of predicting vegetation dynamics and mitigating the impacts of climate change on vegetation. With this session, we want to encourage discussion between plant physiologists, soil microbiologists, biogeochemists, and ecosystem scientists in the context of how interactions at the interface of all these fields could inform us on the future of plant ecosystems.
1:30 PM
Above, below, and in-between: How plant-soil interactions both respond to and help dictate lowland tropical forest responses to warming
Sasha Reed, U.S. Geological Survey; Molly A. Cavaleri, Michigan Technological University; Kelsey R. Carter, Michigan Technological University; Aura M. Alonso-Rodriguez, International Institute for Tropical Agriculture; Tana E. Wood, USDA Forest Service
1:50 PM
Carbon and nitrogen dynamics in a 100-year-old drought stressed Scots pine forest
Jobin Joseph, Swiss Federal Institute for Forest Snow and Landscape Research WSL
2:10 PM
Linking belowground plant traits with ecosystem processes: A multi-biome perspective
Colleen Iversen, Oak Ridge National Laboratory; Paul J. Hanson, Oak Ridge National Laboratory; Avni Malhotra, Oak Ridge National Laboratory; M. Luke McCormack, University of Minnesota; Richard J. Norby, Oak Ridge National Laboratory; Verity G. Salmon, Oak Ridge National Laboratory; Stan D. Wullschleger, Oak Ridge National Laboratory
2:30 PM
Belowground carbon exchange between tall trees connected by mycorrhizae
Tamir Klein, Weizmann Institute of Science; Ido Rog, Weizmann Institute of Science; Nicholas P. Rosenstock, Lund University; Christian Koerner, University of Basel
2:50 PM
Microbial handshake in the rhizosphere
Gerd Gleixner, Max Planck Institute for Biogeochemistry
3:10 PM
3:20 PM
Impacts of soil microbial communities on plant physiological response to drought
Danielle E. Marias, Los Alamos National Laboratory; Sanna A. Sevanto, Los Alamos National Laboratory; John Dunbar, Los Alamos National Laboratory
4:00 PM
Water uptake patterns in a tropical rainforest ecosystem and consequences on intra- and inter-annual variations in C flux and balance
Damien Bonal, Université de Lorraine, AgroParisTech, INRA; Maricar Aguilos, INRA; Benoit Burban, INRA; Bruno Hérault, Cirad,Univ Montpellier, INPHB, Institut National Polytechnique Houphouët-Boigny; Hans Verbeeck, Ghent University; Hannes De Deurwaerder, Ghent University; Camille Ziegler, INRA; Sabrina Coste, Université de la Guyane; Clément Stahl, INRA
4:20 PM
Understanding plant-soil interactions using environmental tracers
Brent D. Newman, Los Alamos National Laboratory; David D. Breshears, University of Arizona; Rachael McCaully, North Carolina State University; Carli Arendt, North Carolina State University; Sanna Sevanto, Los Alamos National Laboratory; Jeffrey Heikoop, Los Alamos National Laboratory; Nathan Wales, Los Alamos National Laboratory