Grow deep roots now or wait? A coupled carbon-hydraulic framework for understanding how trees acquire groundwater subsidy to during drought

David Scott Mackay, University at Buffalo, Department of Geography, Buffalo, NY, United States, Diane R. Wang, University at Buffalo, Buffalo, NY, United States, Charlotte Grossiord, WSL Swiss Federal Institute for Forest, Snow and Landscape Research, Birmensdorf, Switzerland, Nate McDowell, Pacific Northwest National Laboratory, Richland, WA, United States and John Sperry, University of Utah, School of Biological Sciences, Salt Lake City, UT, United States