B054
Heat and Microclimate Impacts on Plant Functioning: From Molecules to the Biosphere
Session ID#: 250729
Session Description:
Understanding plant responses to climate extremes is crucial for predicting climate change and its effects on the biosphere. Heat waves and hot droughts are increasing in frequency, intensity, and duration, yet the microclimates that plants experience often differ substantially from ambient macroclimates. Predicting heat effects on plant functioning therefore requires insight into both the mechanisms driving microclimate variation and the physiological responses of plants to heat. This session features contributions that integrate the physical sciences and plant ecophysiology to advance understanding of how microclimate variation influences plant functioning from molecules to the biosphere. Topics may include model development and testing, observational or experimental data, infrared thermography, remote sensing, and interdisciplinary approaches that quantify or predict microclimate dynamics or physiological responses to climate extremes. Submissions focusing on energy balance, canopy structure, heat tolerance or acclimation, or novel modeling or measurement techniques are particularly encouraged.
Co-Sponsor(s):
Index Terms:
0426 Biosphere/atmosphere interactions [BIOGEOSCIENCES]
0476 Plant ecology [BIOGEOSCIENCES]
0495 Water/energy interactions [BIOGEOSCIENCES]
3307 Boundary layer processes [ATMOSPHERIC PROCESSES]
Primary Convener: Sean T Michaletz, University of British Columbia, Vancouver, BC, Canada
Conveners: Luiza Maria T Aparecido, University of Utah, School of Biological Sciences, Salt Lake City, UT, United States and Bradley Posch, Desert Botanical Garden, Research, Conservation, and Collections, Phoenix, United States
Student/Early Career Convener: Nicole Bison, University of British Columbia, Vancouver, BC, Canada
Decoupling of photosynthesis and evapotranspiration in heatwaves (1881501)
Marcella Cross1, T. Andrew Black2, Sara Knox3, Rachhpal Jassal4, Zoran Nesic2, Paul Moore5 and Sean T Michaletz1, (1)University of British Columbia, Vancouver, BC, Canada, (2)University of British Columbia, Faculty of Land and Food Systems, Vancouver, BC, Canada, (3)McGill University, Montreal, QC, Canada, (4)University of British Columbia, Vancouver, Canada, (5)McGill University, Montreal, Canada
Microclimate-Driven Divergence in Photosynthetic Strategies Across Aspect and Canopy Position in Montane Forest Trees (1885468)
Ambuj Mishra1, Shailendra Kumar2, Manish Dhaulakhandi1, Satish Chandra Garkoti2 and =, (1)Jawaharlal Nehru University New Delhi, School of Environmental Sciences, New Delhi, India, (2)Jawaharlal Nehru University, School of Environmental Sciences, New Delhi, India
Vertical Gradients in Thermal Responses to Photosynthetic Traits of Pinus koraiensis in a Korean Evergreen Needle-leaf Forest (1909227)
Jisun Kim1,2, Youngryel Ryu1,2, Elias Kaiser3,4, Helin Zhang4, Sungchan Jeong4 and Jooseo Lee2, (1)Seoul National University, Integrated Major in Smart City Global Convergence, Seoul, Korea, Republic of (South), (2)Seoul National University, Department of Landscape Architecture and Rural Systems Engineering, Seoul, Korea, Republic of (South), (3)Wageningen University, Horticulture and Product Physiology, Wageningen, Netherlands, (4)Seoul National University, Research Institute of Agriculture and Life Sciences, Seoul, South Korea
Stomatal Optimization Theory Overestimates Leaf Cooling in Populus fremontii Saplings During Drought and Episodic Heatwave Stress (1928748)
Colin Pannikkat1, Bradley Posch2, Dan Koepke2, Susan E Bush2, Alexandra Schuessler2, Jessica Sijia Guo3, Kelly Kerr4, Kevin R Hultine2 and German Vargas G.5, (1)Oregon State University, Corvallis, OR, United States, (2)Desert Botanical Garden, Research, Conservation, and Collections, Phoenix, United States, (3)University of Utah, Geology and Geophysics, Salt Lake City, United States, (4)University of California Santa Barbara, Ecology, Evolution, and Marine Biology, Santa Barbara, United States, (5)Oregon State University, Botany and Plant Pathology, Corvallis, United States
Upper temperature thresholds in tropical forests. (Invited) (1958759)
Chris Doughty, Northern Arizona University, SICCS, Flagstaff, AZ, United States, Benjamin Wiebe, Northern Arizona University, SICCS, Flagstaff, United States and Martijn Slot, Smithsonian Tropical Research Institute, Balboa, Panama
Shifts in Crown Structure Modulate Thermal Responses at Two Scales in a Hawaiian Tropical Wet Forest (1960203)
Shannon Bayliss, University of California Berkeley, Environmental Science, Policy, and Management, Berkeley, United States, Eben Broadbent, University of Florida, Gainesville, United States and Stephanie Pau, University of California Berkeley, Geography, Berkeley, United States
Tropical Leaf Responses After Exposure to Extreme Heat in an Enclosed Tropical Forest at Biosphere 2 (1971818)
Joost L M Van Haren, University of Arizona, Honors College, Tucson, AZ, United States, Mia Schoonover, Skidmore College, Saratoga Springs, United States, Justin Beslity, University of Arizona, Biosphere 2, Tucson, United States and Jason Deleeuw, University of Arizona, Biosphere 2 Rain Forest Research Specialist and Terrestrial Biome Manager, Tucson, United States
Understanding the sensitivity of stomatal conductance to heat and drought using Physics-Informed Neural Network (1975655)
Jisu Han1, Michael Contie Benson2, Kimberly A Novick2, Charlotte Grossiord3, Alyssa Kullberg4 and Pierre Gentine1, (1)Columbia University, Department of Earth and Environmental Engineering, New York, United States, (2)Indiana University Bloomington, Bloomington, United States, (3)Swiss Federal Institute of Technology Lausanne, Lausanne, Switzerland, (4)École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
Heatwave-Driven Declines in Ecosystem Productivity: Observational and Modeling Analysis (1975685)
Zelalem A Mekonnen, Lawrence Berkeley National Laboratory, Climate & Ecosystem Sciences Division, Berkeley, CA, United States, William J Riley, Lawrence Berkeley National Laboratory, Climate and Ecosystem Sciences Division, Berkeley, United States, Christopher J Still, Oregon State University, Forest Ecosystems and Society, Corvallis, OR, United States and Robert F Grant, University of Alberta, Department of Renewable Resources, Edmonton, AB, Canada
Loss of Epiphytes Leads to Changes in Microclimate and Sap Flow Dynamics in a Costa Rican Tropical Montane Cloud Forest (1977759)
Sybil G. Gotsch1, Damon Vaughan2, Lauren Lowman3, Nalini Nadkarni4, Todd E Dawson5, Elenter Cubero2 and Pablo Gutierrez2, (1)University of Kentucky, Department of Forestry and Natural Resources, Lexington, United States, (2)University of Kentucky, Lexington, United States, (3)Wake Forest University, Department of Engineering, Winston-Salem, NC, United States, (4)University of Utah, Biology, Salt Lake City, UT, United States, (5)University of California Berkeley, Integrative Biology, Berkeley, United States
Use of thermal imaging to quantify the influence of irrigation deficit on the cooling potential of horticultural vines (1978528)
Amelia Keyser-Gibson1, Noah Benson2, Bernease Herman2, Jared Sisneroz3, Alessandro Ossola4, Shital Poudyal5, Ursula Schuch6, Natalie Levy7 and Soo-Hyung Kim8, (1)Seattle, WA, UNITED STATES, (2)University of Washington Seattle Campus, Seattle, United States, (3)University of California Davis, Davis, United States, (4)University of California Davis, Davis, CA, United States, (5)Utah State University, Logan, United States, (6)University of Arizona, Tucson, United States, (7)University of California Division of Agriculture and Natural Resources, Irvine, United States, (8)University of Washington, School of Environmental and Forest Sciences, Center for Urban Horticulture, Seattle, United States
Plant-Water Use and Ecosystem Functioning in Subalpine Communities (1990656)
Jocelyn Navarro, University of Arizona, Ecology and Evolutionary Biology, Tucson, United States; Rocky Mountain Biological Laboratory, Gothic, United States, Roxy Cruz-de Hoyos, University of California Berkeley, Berkeley, United States, Lorah Seltzer, University of Arizona, Department of Ecology and Evolutionary Biology, Tucson, AZ, United States and Brian Joseph Enquist, University of Arizona, Department of Ecology and Evolutionary Biology, Tucson, United States
Weighing the Options: a Test of Alternative Stomatal Optimisation Models at High Temperatures (1992825)
Camille Sicangco, Western Sydney University, Hawkesbury Institute for the Environment, Jacksonville, FL, UNITED STATES, Manon Sabot, ARC Centre of Excellence for Climate Extremes, University of New South Wales, Sydney, NSW, Australia; Max Planck Institute for Biogeochemistry, Jena, Germany, John E Drake, SUNY College of Environmental Science and Forestry, Sustainable Resources Management, Syracuse, United States, Mark G Tjoelker, Western Sydney University, Hawkesbury Institute for the Environment, Penrith, NSW 2751, Australia and Belinda Medlyn, Western Sydney University, Hawkesbury Institute for the Environment, Penrith, NSW, Australia
Plasticity Across Salsola Tragus Genotypes in Differing Temperature and Precipitation Regimes (1995975)
Madeline Buhman, University of Utah, Salt Lake City, UT, United States, Luiza Maria T Aparecido, University of Utah, School of Biological Sciences, Salt Lake City, UT, United States and AnnaBelle Bosworth, University of Utah, Salt Lake City, United States
