B087
Plant hydraulics and mechanistic drought responses in the Earth system

Session ID#: 77043

Session Description:
Vegetation modulates land to atmosphere fluxes of carbon and water through the plant water transport system. However, substantial spatial and temporal variation exists in plant hydraulic coupling due to variation in hydraulic strategies – different traits governing the movement of water through the plant. These traits influence both short-term fluxes and long-term carbon drawdown through interaction with mortality, competition, and other biotic factors. Plant hydraulics therefore has enormous potential applications in understanding ecosystem behavior. However, most observations and studies of plant hydraulics remain limited to the stand-scale. New remote sensing observations of canopy water content and recent efforts to employ plant hydraulic models at larger scales have increased the range of possible studies. In this session, we invite submissions related to observing, modeling, and characterizing plant hydraulic behavior, with a particular interest in landscape or greater scales.
Index Terms:

0428 Carbon cycling [BIOGEOSCIENCES]
0476 Plant ecology [BIOGEOSCIENCES]
1812 Drought [HYDROLOGY]
1818 Evapotranspiration [HYDROLOGY]

Primary Convener:  Alexandra G Konings, Stanford University, Department of Earth System Science, Stanford, CA, United States
Conveners:  Anna T Trugman, University of Utah, School of Biological Sciences, Salt Lake City, UT, United States and William Anderegg, University of Utah, School of Biological Sciences, Salt Lake City, UT, United States
Primary Liaison:  Alexandra G Konings, Stanford University, Department of Earth Sciences, Stanford, CA, United States
 
Identifying regions of drought mortality risk for tree species: a case study focussed on SE Australia. (491220)
Martin Gerard De Kauwe1, Belinda Medlyn2, Patrick Meir3, Lucas A Cernusak4, Andrew John Pitman1, Vanessa Elizabeth Haverd5, Anna Ukkola6, Mengyuan Mu7, Manon E. B. Sabot7, Brendan Choat8, Chris Blackman9, David Tissue10, Paul Rymer9, Peter Briggs11, Linda Beaumont12 and John Baumgartner12, (1)University of New South Wales, ARC Centre of Excellence for Climate Extremes, Sydney, NSW, Australia, (2)Western Sydney University, Hawkesbury Institute for the Environment, Sydney, Australia, (3)Australian National University, Canberra, Australia, (4)The Australian National Uni, Canberra, Australia, (5)CSIRO Canberra, Oceans and Atmosphere, Canberra, ACT, Australia, (6)The Australian National University, ARC Centre of Excellence for Climate Extremes, Canberra, ACT, Australia, (7)University of New South Wales, ARC Centre of Excellence for Climate Extremes, Sydney, Australia, (8)Western Sydney University, Hawkesbury Institute for the Environment, Richmond, Australia, (9)University of Western Sydney, Penrith, Australia, (10)University of Western Sydney, Penrith, NSW, Australia, (11)CSIRO Canberra, Canberra, Australia, (12)Macquarie University, Sydney, Australia
 
The Impact of Acclimation on the Response of US Forests to Climate Change: Predictions from the Optimization of Photosynthetic Opportunity and Hydraulic Capacity (492378)
John Sperry1, Martin Venturas1, Henry N Todd1, Anna T Trugman1, William Anderegg1, Yujie Wang1 and Xiaonan Tai2, (1)University of Utah, School of Biological Sciences, Salt Lake City, UT, United States, (2)University of Utah, Department of Geology and Geophysics, Salt Lake City, UT, United States
 
Can isohydricity explain drought responses of desert riparian plants? (493707)
Yan Bai1, Yanlan Liu2, Lara M Kueppers3 and Xiaoyan Li1, (1)Beijing Normal University, Faculty of Geographical Science, Beijing, China, (2)Stanford University, Department of Earth System Science, Stanford, CA, United States, (3)University of California Berkeley, Energy and Resources Group, Berkeley, CA, United States
 
Satellite observations show enhanced soil moisture use efficiency in global arid lands (503986)
Alemu Gonsamo, McMaster University, School of Geography & Earth Sciences, Hamilton, ON, Canada
 
Microwave Radiometry for Remote Sensing of Plant Water Status Dynamics: Stand-Scale Evaluation in a Temperate Deciduous Forest (520934)
Nataniel Holtzman1, Leander DL Anderegg2, Simon Kraatz3, Alex Mavrovic4, Alexandre Roy4, Oliver Sonnentag5, Christoforos Pappas6, Michael H Cosh7, Nick Steiner8, Alexandre Langlois4, Tarendra Lakhankar9, Andreas Colliander10 and Alexandra G. Konings11, (1)Stanford University, Stanford, CA, United States, (2)University of California Berkeley, Berkeley, CA, United States, (3)University of New Hampshire, Civil and Environmental Engineering, Durham, NH, United States, (4)University of Sherbrooke, Sherbrooke, QC, Canada, (5)Université de Montréal, Département de Géographie, Montréal, QC, Canada, (6)ETH Zurich, Zurich, Switzerland, (7)U. S. Dept. of Agriculture, Beltsville, MD, United States, (8)City College of New York, New York. NY, USA, Department of Earth and Atmospheric Sciences, New York, NY, United States, (9)NOAA-CREST, The City College of New York, CUNY, New York, NY, United States, (10)Jet Propulsion Laboratory, Pasadena, CA, United States, (11)Stanford University, Department of Earth System Science, Stanford, CA, United States
 
Hydraulic traits of trees growing in wet places: Do lessons learned from arid biomes translate to mesic forests? (523453)
Michael Contie Benson1, Sander Olivia Denham2, Chelcy Miniat3, Justine E.C. Missik4, A. Christopher Oishi3, Jeffrey D Wood5 and Kimberly A Novick1, (1)Indiana University Bloomington, Bloomington, IN, United States, (2)Indiana University - Bloomington, School of Public and Environmental Affairs, Bloomington, United States, (3)USDA Forest Service, Southern Research Station, Coweeta Hydrologic Laboratory, Otto, NC, United States, (4)Washington State University, Pullman, WA, United States, (5)University of Missouri, Columbia, MO, United States
 
Hydraulic Control of Carbon Dioxide and Water Fluxes at the Ecosystem Scale (547895)
Jeffrey D Wood, University of Missouri Columbia, School of Natural Resources, Columbia, MO, United States, Lianhong Gu, Oak Ridge National Laboratory, Oak Ridge, TN, United States and Lawren Sack, University of California Los Angeles, Ecology and Evolutionary Biology, Los Angeles, CA, United States
 
Effects of drought on mangroves: dieback and recovery in the Gulf of Carpentaria, Australia (563279)
Alice Gauthey, University of Western Sydney, Hawkesbury Institute for the Environment, Penrith, NSW, Australia and Brendan Choat, Western Sydney University, Hawkesbury Institute for the Environment, Richmond, Australia
 
Impacts of 2015-2016 El Nino on Seasonal and Diurnal Canopy Water Content of the Amazon Rainforest (564645)
Sassan S Saatchi, Jet Propulsion Laboratory, Pasadena, CA, United States, Yifan Yu, NASA Jet Propulsion Laboratory, Pasadena, CA, United States, Liang Xu, NASA Jet Propulsion Laboratory, Carbon Cycle and Ecosystems, Pasadena, CA, United States, Yan Yang, University of California Los Angeles, Institute of the Environment and Sustainability, Los Angeles, CA, United States, Alexandra G. Konings, Stanford University, Department of Earth System Science, Stanford, CA, United States, Oliver Binks, University of Edinburgh, School of GeoSciences, Edinburgh, United Kingdom and Patrick Meir, University of Edinburgh, Edinburgh, United Kingdom
 
Soil hydraulics rather than xylem embolism generally limits transpiration under drought conditions (581228)
Mathieu Javaux, Université Catholique de Louvain, Louvain-La-Neuve, Belgium and Andrea Carminati, University of Bayreuth, Chair of Soil Physics, Bayreuth, Germany
 
The application of plant functional traits into modelling tree mortality globally (585032)
Daijun Liu1, Adriane Esquivel-Muelbert1, Nezha Acil1, Jonathan P Sadler1, Phillip Papastefanou2, Anja Rammig2 and Thomas Pugh1, (1)University of Birmingham, School of Geography, Earth and Environmental Sciences, Birmingham, United Kingdom, (2)Technical University of Munich, School of Life Sciences Weihenstephan, Munich, Germany
 
Patterns in survival-enhancing mechanisms derived from plant water storage (589536)
Yair Mau, Hebrew University of Jerusalem, Jerusalem, Israel and Avigail Kaner, Hebrew University of Jerusalem, Soil and Water Sciences, Rehovot, Israel
 
When is Plant Hydraulics Necessary for Predicting Soil Water Stress in Land Surface Models? (589688)
Brandon Sloan, University of Minnesota Twin Cities, Civil, Environmental, and Geo-Engineering, Minneapolis, MN, United States, Sally E Thompson, University of Western Australia, Department of Civil, Environmental and Mining Engineering, Perth, Australia and Xue Feng, University of Minnesota Twin Cities, Civil, Environmental, Geo-Engineering, Minneapolis, MN, United States
 
Alternatives to isohydricity for diagnosing vegetation water use strategy (590064)
Daniel Kennedy, Columbia University of New York, Palisades, NY, United States, Pierre Gentine, Department of Earth and Environmental Engineering, Columbia University, New York, NY, United States and Kimberly A Novick, Indiana University Bloomington, Bloomington, IN, United States
 
Second Year Effects of Reducing Stand Density on Seasonal Water Use in Pinus ponderosa (592696)
Kathryn V. Baker, University of Idaho, Moscow, ID, United States and Daniel M. Johnson, University of Georgia, Warnell School of Forestry and Natural Resources, Athens, GA, United States
 
Drought-vegetation interactions and their impact on the climate system (Invited) (602968)
Sonia I Seneviratne1, Vincent Humphrey1,2, Ryan S. Padrón1, Martha Vogel1, Lukas Gudmundsson1 and Jakob Zscheischler1,3, (1)ETH Swiss Federal Institute of Technology Zurich, Zurich, Switzerland, (2)California Institute of Technology, Environmental Science and Engineering, Pasadena, CA, United States, (3)University of Bern, Bern, Switzerland
 
Evaluation of the relationship between vegetation optical depth (VOD) and canopy water content (CWC) in the tropics with a hydraulics-enabled terrestrial biosphere model ED2-hydro (610097)
Xiangtao Xu, Harvard University, Organismic and Evolutionary Biology, Cambridge, MA, United States, Paul R Moorcroft, Harvard Univ, Cambridge, MA, United States, Alexandra G. Konings, Stanford University, Department of Earth System Science, Stanford, CA, United States, Sassan Saatchi, NASA Jet Propulsion Laboratory, Pasadena, CA, United States, Liang Xu, NASA Jet Propulsion Laboratory, Carbon Cycle and Ecosystems, Pasadena, CA, United States and Marcos Longo, Brazilian Agricultural Research Corporation (Embrapa), Embrapa Agricultural Informatics, Campinas, Brazil
 
Upscaled Exact Solutions to Root Water Uptake Equations for Earth System Modelling (616539)
Martin Bouda, Université Catholique de Louvain, Earth and Life Institute, Louvain-La-Neuve, Belgium; Academy of Sciences of the Czech Republic, Botanical Institute, Prague, Czech Republic
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