H22H:
Stable Isotopes in the Critical Zone: Methods, Applications, and Process Interpretations I


Submit an Abstract to this Session


Session ID#: 62093

Session Description:
Stable isotopes are powerful tools for tracing fluxes of water, carbon, and nutrients. They are used increasingly by various disciplines to better understand the functioning of the soil-plant-atmosphere system on various scales. While new methods allow measurements at high spatial and temporal resolution, studies applying tracer methods are now tackling complex interactions between soil, plant physiology and ecology, and variable atmospheric drivers. As such, methodological developments and changes are happening quickly and have a strong bearing on process understanding and interpretation of findings. This session aims to address the current state of the art for methods, applications and process interpretations using stable isotopes in the critical zone and to foster interdisciplinary exchange. We welcome experimental and modeling studies that present methodological developments and applications of isotope tracers in the critical zone. Studies that seek to cross disciplinary boundaries and reveal new process understanding on interactions between compartments are especially welcome.
Primary Convener:  Natalie Orlowski, University of Freiburg, Hydrology, Freiberg, Germany
Conveners:  Matthias Sprenger, University of Aberdeen, Northern Rivers Institute, Aberdeen, United Kingdom, Todd E Dawson, University of California Berkeley, Integrative Biology, Berkeley, CA, United States and Stephen P Good, Oregon State University, Department of Biological & Ecological Engineering, Corvallis, OR, United States
Primary Liaison:  Natalie Orlowski, University of Freiburg, Hydrology, Freiberg, Germany
Chairs:  Matthias Sprenger, University of Aberdeen, Northern Rivers Institute, Aberdeen, United Kingdom and Natalie Orlowski, University of Freiburg, Hydrology, Freiberg, Germany
OSPA Liaison:  Matthias Sprenger, University of Aberdeen, Northern Rivers Institute, Aberdeen, United Kingdom

Cross-Listed:
  • B - Biogeosciences
Index Terms:

0454 Isotopic composition and chemistry [BIOGEOSCIENCES]
1813 Eco-hydrology [HYDROLOGY]
1851 Plant ecology [HYDROLOGY]
1865 Soils [HYDROLOGY]

Abstracts Submitted to this Session:

Understanding Ecohydrological Processes in the Critical Zone through Targeted Manipulation Experiments (Invited) (348531)
Paolo Benettin, Swiss Federal Institute of Technology Lausanne, ENAC/IIE/ECHO, Lausanne, Switzerland
Trees use deep rock moisture, yet the xylem of their stable isotopes do not fully record this moisture source (447518)
Jasper Oshun, US Fulbright Scholar, Geology, Arcata, United States, Daniella Marie Rempe, University of Texas at Austin, Department of Earth and Planetary Sciences, Jackson School of Geosciences, Austin, United States, William Jesse Hahm, University of California Berkeley, Earth and Planetary Science, Berkeley, CA, United States, Amanda M Donaldson, University of California, Santa Cruz, Earth and Planetary Sciences, Santa Cruz, United States, Todd E Dawson, University of California Berkeley, Integrative Biology, Berkeley, CA, United States, Inez Y Fung, University of California, Berkeley, Department of Earth and Planetary Science, Berkeley, United States and William E Dietrich, University of California Berkeley, Department of Earth and Planetary Science, Berkeley, United States
Stable isotopes in oaks reveal progressive unexpected shift toward isotopically lighter rock moisture source during summer dry out of the critical zone (370479)
William Jesse Hahm, University of California Berkeley, Berkeley, CA, United States, William E Dietrich, University of California Berkeley, Department of Earth and Planetary Science, Berkeley, United States, Todd E Dawson, University of California Berkeley, Integrative Biology, Berkeley, CA, United States, Daniella Marie Rempe, University of Texas at Austin, Department of Geological Sciences, Jackson School of Geosciences, Austin, United States and David Dralle, USDA Forest Service, Pacific Southwest Research Station, Davis, United States
Fractionation of δ2H during root water uptake is linked to plant transpiration in saplings of a temperate tree species (410294)
Adrià Barbeta1, Teresa Gimeno1, Laura Clavé1,2, Samuel Jones2,3, Lisa Wingate1, Bastien Fréjaville4 and Jerome Ogee3, (1)INRA Bordeaux-Aquitaine, Villenave d'Ornon Cedex, France, (2)INRA Bordeaux-Aquitaine, Villenave d’Ornon, France, (3)INRA Institut National de la Recherche Agronomique, Paris Cedex 07, France, (4)INRA Bordeaux-Aquitaine, Villenave-d'Ornon, France
Correcting tree-ring ẟ13C-based water-use efficiency time series for tree-size and canopy-position effects in eight temperate tree species (436154)
Matthew A Vadeboncoeur1, Katie Jennings1, Andrew Ouimette2 and Heidi Asbjornsen1, (1)University of New Hampshire Main Campus, Durham, NH, United States, (2)University of New Hampshire, Department of Natural Resources and the Environment, Durham, United States
Forest Nutrient Supply and Uptake Depth Depends on Erosion Rate as Disclosed by Metal Isotopes (444871)
Friedhelm von Blanckenburg1, Jan A. Schuessler1 and David Uhlig2, (1)GFZ German Research Centre for Geosciences, Potsdam, Germany, (2)Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences, Potsdam, Germany

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