IGN 13-3 - Local adaptation to drought in a widely distributed non-native woody plant species

Wednesday, August 9, 2017
C123, Oregon Convention Center
Susan Bush1,2, Randall W. Long3, Dan F. Koepke1, Kevin C. Grady4 and Kevin R. Hultine1, (1)Department of Research, Conservation, and Collections, Desert Botanical Garden, Phoenix, AZ, (2)Biology, University of Utah, Salt Lake City, UT, (3)Ecology, Evolution, and Marine Biology, University of California Santa Barbara, Santa Barbara, CA, (4)School of Forestry, Northern Arizona University, Flagstaff, AZ
Plant hydraulics play a critical role in carbon, water and biogeochemical cycling, and patterns of plant mortality in aridland ecosystems. Inter-specific differences in hydraulic strategies are well documented, however much less is known regarding the prevalence and role of local adaptation and intra-specific differences in predicting plant and ecosystem response to drought. Results from a Tamarix common garden drought experiment show differences in hydraulic strategies from source populations spanning a large elevational gradient, and further underscore the need to assess the degree to which local adaptation impacts plant response to drought across the western USA and other aridland ecosystems.