H059
Forest water dynamics under water limitation and disturbance

Session ID#: 80291

Session Description:
Shifting precipitation patterns and rising temperatures are altering forest water dynamics across biomes. Forests are increasingly susceptible to the direct and indirect effects of water limitation such as physical impairment of hydraulic pathways or increased vulnerability to disturbance events. Different species employ unique hydraulic strategies to regulate water use while theoretically optimizing carbon uptake. How these mechanisms function at individual and system scales under water limitation and disturbance regimes has broad implications for carbon, nutrient, and energy cycling. This session will address the impacts of water limitation and disturbance on forest water cycling across spatiotemporal scales with an emphasis on the role of plant hydraulic strategies. We welcome submissions from empirical, experimental, theoretical, and modeling studies.
Index Terms:

1812 Drought [HYDROLOGY]
1813 Eco-hydrology [HYDROLOGY]
1818 Evapotranspiration [HYDROLOGY]
1851 Plant ecology [HYDROLOGY]


Primary Convener:  Elizabeth Agee, University of Michigan Ann Arbor, Ann Arbor, MI, United States
Convener:  Ashley M Matheny, University of Texas at Austin, Department of Geological Sciences, Jackson School of Geosciences, Austin, TX, United States
Primary Liaison:  Elizabeth Agee, University of Michigan Ann Arbor, Ann Arbor, MI, United States
 
Increasing Late-season Drought Impacts on Forest Productivity due to Mesophication in the Eastern US Forests (492811)
Tsun Fung Au1, Justin T. Maxwell1, Kimberly A Novick2, Scott M Robeson1, Benjamin Lockwood1, Scott Warner3, Grant L. Harley4, Richard Phillips5, Matthew D Therrell6, Frank Telewski3 and Neil Pederson7, (1)Indiana University Bloomington, Bloomington, IN, United States, (2)Indiana University Bloomington, School of Public and Environmental Affairs, Bloomington, IN, United States, (3)Michigan State University, East Lansing, United States, (4)University of Idaho, Moscow, ID, United States, (5)Indiana University Bloomington, Department of Biology, Bloomington, IN, United States, (6)University of Alabama, Department of Geography, Tuscaloosa, AL, United States, (7)Harvard Forest, Petersham, MA, United States
 
Tree-level hydraulic stress: insights from long-term measurements of sap-flow and tree-water storage (502572)
Gil Bohrer1, Theresia Yazbeck2, Ana Maria Restrepo Acevedo3, Austin Rechner3 and Ashley M Matheny3, (1)Ohio State University Main Campus, Columbus, OH, United States, (2)Ohio State University, Civil, Environmental & Geodetic Engineering, Columbus, OH, United States, (3)University of Texas at Austin, Department of Geological Sciences, Jackson School of Geosciences, Austin, TX, United States
 
Simulation and statistical modeling approaches to investigate dominant controls on hydrologic regime transformations following Eastern hemlock mortality (502874)
Kanishka Singh1, James Knighton2, Mark Whitmore1, Todd Walter2 and James Philip Lassoie1, (1)Cornell University, Natural Resources, Ithaca, NY, United States, (2)Cornell University, Biological and Environmental Engineering, Ithaca, NY, United States
 
Tropical rainforests doom's day? (Invited) (530459)
Pierre Gentine, Department of Earth and Environmental Engineering, Columbia University, New York, NY, United States and Julia Green, Columbia University, New York, United States
 
Hydraulic Redistribution – Relevance and mechanisms of the passive water reallocation among temperate trees and forests under drought (539397)
Benjamin Damian Hafner1,2, Benjamin D Hesse2, Taryn L. Bauerle1 and Thorsten Grams2, (1)Cornell University, Horticulture, Ithaca, NY, United States, (2)Technical University of Munich, Ecophysiology of Plants, Freising, Germany
 
Towards the inclusion of osmotic potential in plant hydrodynamics models to capture mangrove forest responses to changing climate (544975)
Ashley M Matheny, University of Texas at Austin, Department of Geological Sciences, Jackson School of Geosciences, Austin, TX, United States, Chonggang Xu, Los Alamos National Laboratory, Los Alamos, NM, United States, Annalisa Molini, Masdar Institute at Khalifa University of Science and Technology, Civil Infrastructure and Environmental Engineering, Abu Dhabi, United Arab Emirates, Matteo Detto, Princeton University, Princeton, United States and Timothy M Shanahan, University of Texas at Austin, Austin, TX, United States
 
The importance of field-based drought experiments in the setting of a pluvial: transpiration dynamics of two dominant broad-leaved tree species in West Virginia. (552262)
Luis Andres Guillen1, Nicolas Zegre1, Brenden E McNeil2 and Edward R Brzostek3, (1)West Virginia University, Morgantown, WV, United States, (2)West Virginia University, Geology and Geography, Morgantown, WV, United States, (3)West Virginia University, Biology, Morgantown, WV, United States
 
Beyond the borders of tree hydrological function: responses of temperate trees to the exceptional 2018 summer drought. (573790)
Matthias Arend1, Günter Hoch1, Rachel Patthey1, Bernhard Schuldt2, Roman Link2 and Ansgar Kahmen1, (1)University of Basel, Basel, Switzerland, (2)Universität Würzburg, Würzburg, Germany
 
Determining the Effect of Topography on Plant-available Water in Steep, Highly Dissected Forested Terrain (584595)
Karla M Jarecke, Oregon State University, Corvallis, OR, United States, Steven M Wondzell, USFS - Pacific Northwest Research Station, Corvallis, OR, United States and Kevin D. Bladon, Oregon State University, Corvallis, United States
 
Below-ground structural and ecohydrological feedbacks across disturbance severity gradients (588344)
Elizabeth Agee, University of Michigan Ann Arbor, Ann Arbor, MI, United States, Jeff W Atkins, Virginia Commonwealth University, Biology, Richmond, VA, United States, Christopher Michael Gough, VCU-Biology, Richmond, VA, United States, Ben P Bond-Lamberty, Pacific Northwest National Laboratory, Joint Global Change Research Institute, College Park, MD, United States, Kayla Cerise Mathes, Virginia Commonwealth University, Integrative Life Sciences, Richmond, VA, United States, Ashley M Matheny, University of Texas at Austin, Department of Geological Sciences, Jackson School of Geosciences, Austin, TX, United States and Valeriy Yu Ivanov, University of Michigan, Department of Civil and Environmental Engineering, Ann Arbor, MI, United States
 
Beyond drought tolerance: are hydraulic recovery traits important to the responses of ecosystem gas exchange to increasing drought? (Invited) (621236)
Megan Bartlett, UC Davis, Davis, United States, Matteo Detto, Princeton University, Princeton, United States and Stephen W Pacala, Princeton University, Ecology and Evolutionary Biology, Princeton, NJ, United States
 
Influence of tree water content in the zero-flow maximum temperature difference: A theoretical and experimental approach. (622662)
Ana Maria Restrepo Acevedo1, Elizabeth Agee2 and Ashley M Matheny1, (1)University of Texas at Austin, Department of Geological Sciences, Jackson School of Geosciences, Austin, TX, United States, (2)University of Michigan Ann Arbor, Ann Arbor, MI, United States
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