B21K:
Vegetation Canopies: Physiology, Structure, Function I

Submit an Abstract to this Session



Session ID#: 31874

Session Description:
Canopy structure along with leaf form and function determine global rates of photosynthesis and transpiration and, thus, heavily influence the global carbon, water, and energy cycles. Key unknowns remain regarding how leaf physiology and canopy structure respond to both temporal and spatial mesoclimatic changes, and the within-canopy microclimate. In this session, we will explore the relative roles of leaf physiology, phenology, microclimate, and canopy structure in determining ecosystem states, traits, and rates. We are particularly interested in studies that use novel approaches to examine changes in canopy form and function, particularly those that bridge traditional boundaries with new theory, observations, and models. We encourage submissions of studies merging field and experimental observations, with both near-surface and remote sensing techniques. We also encourage empirical and modeling studies examining canopy processes across scales, from seconds to decades and from the leaf to the globe.
Primary Convener:  Nicholas G Smith, Texas Tech University, Lubbock, TX, United States
Conveners:  Prof. Trevor F Keenan, Lawrence Berkeley National Laboratory, Berkeley, United States, Han Wang, Northwest A&F University, Yangling, China and Ulo Niinemets, Estonian University of Life Sciences, Institute of Agriculture and Environmental Sciences, Tartu, Estonia
Chairs:  Han Wang, Macquarie University, Sydney, Australia, Ulo Niinemets, Estonian University of Life Sciences, Institute of Agriculture and Environmental Sciences, Tartu, Estonia, Nicholas G Smith, Texas Tech University, Lubbock, TX, United States and Prof. Trevor F Keenan, Lawrence Berkeley National Laboratory, Berkeley, United States
OSPA Liaison:  Nicholas G Smith, Texas Tech University, Lubbock, TX, United States
Index Terms:

0414 Biogeochemical cycles, processes, and modeling [BIOGEOSCIENCES]
0416 Biogeophysics [BIOGEOSCIENCES]
0426 Biosphere/atmosphere interactions [BIOGEOSCIENCES]
0476 Plant ecology [BIOGEOSCIENCES]

Abstracts Submitted to this Session:

Assessing trait-based scaling theory in tropical and temperate forests spanning a broad temperature gradients (Invited) (259652)
Brian Joseph Enquist, University of Arizona, Department of Ecology and Evolutionary Biology, Tucson, United States
Vegetation Function and Physiology: Photosynthesis, Fluorescence and Non-photochemical Quenching (NPQ) (211764)
Qingyuan Zhang, NASA Goddard Space Flight Center, Biospheric Sciences Laboratory, Greenbelt, MD, United States and Tian Yao, NASA Goddard Space Flight Cen., Greenbelt, MD, United States
The impact of including export limitation in photosynthetic models from leaf to global scales (261065)
Danica Lombardozzi1, Nicholas G Smith2, Susan J Cheng3, Gordon B Bonan4, Jeffrey S. Dukes5, Rosie Fisher4, Thomas D. Sharkey6 and Alistair Rogers7, (1)National Center for Atmospheric Research, Boulder, United States, (2)Texas Tech University, Lubbock, TX, United States, (3)Cornell University, Ecology and Evolutionary Biology, Ann Arbor, NY, United States, (4)National Center for Atmospheric Research, Boulder, CO, United States, (5)Carnegie Institution for Science Stanford, Stanford, United States, (6)Michigan State University, East Lansing, MI, United States, (7)Brookhaven National Laboratory, Environmental and Climate Sciences Department, Upton, United States
Improving Models of Photosynthetic Thermal Acclimation: Which Parameters are Most Important and How Many Should Be Modified? (228825)
Joseph Ronald Stinziano, University of Western Ontario, Biology, London, ON, Canada, Danielle Way, University of Western Ontario, London, ON, Canada and William Bauerle, Colorado State University, Fort Collins, CO, United States
Low apparent quantum yield in Arctic plants suggests that terrestrial biosphere models will over estimate carbon assimilation at high latitudes (234082)
Alistair Rogers, Brookhaven National Laboratory, Environmental & Climate Sciences Department, Upton, United States, Dr. Shawn Serbin, BA, MS, PhD, Brookhaven National Laboratory, Environmental Science and Technologies Department, Upton, United States, Kim S Ely, Brookhaven National Laboratory, Environmental and Climate Sciences Department, Upton, United States and Stan Wullschleger, Oak Ridge National Laboratory, Environmental Sciences Division and Climate Change Science Institute, Oak Ridge, United States
Effects of dew deposition on transpiration and carbon uptake in leaves (219056)
Cynthia Gerlein-Safdi1,2, Michael Koohafkan3, Michaella Chung4, Fulton E. Rockwell5, Sally E Thompson4 and Kelly K Caylor6,7, (1)Princeton University, Civil and Environmental Engineering, Princeton, United States, (2)University of Michigan, Climate and Space Science and Engineering, Ann Arbor, United States, (3)University of California Davis, Environmental Science and Policy, Davis, CA, United States, (4)University of California Berkeley, Civil and Environmental Engineering, Berkeley, CA, United States, (5)Harvard University, Organismic and Evolutionary Biology, Cambridge, MA, United States, (6)University of California Santa Barbara, Earth Research Institute, Department of Geography, Santa Barbara, United States, (7)Princeton University, Civil and Environmental Engineering, Princeton, NJ, United States

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