Stable isotopes in oaks reveal progressive unexpected shift toward isotopically lighter rock moisture source during summer dry out of the critical zone
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
