Author(s): Davidson K; Serbin S; Ely K; Rogers A
Site ID: N/A
Site Name: Laboratory Based Experiment
Variables: Leaf gas exchange
Date Range: July 30, 2020 - Aug. 19, 2020
Description: This data package contains stomatal response to assimilation (m) curves of sunlit canopy leaves of species Populus deltoides Bartr. x Populus nigra L. (hybrid poplar). The trees were grown in pots at Brookhaven National Laboratory, Upton NY, USA, and measurements made using a Licor 6800 portable photosynthesis system. Leaf mass per area (LMA) is included for each measured leaf. The files included in this data package are 2 processed data files (csv) and 6 metadata files (csv), a methods protocol description (pdf) and the complete instrument output (32 xlsx files). File level metadata details are provided in NGT0169.csv in this package.
QA/QC: Full QA-QC
Methods Description: Measurements were made on fully expanded, attached leaves using a Licor 6800 portable photosynthesis system. The irradiance level was systematically adjusted in a decreasing stepwise manner to propagate changes in A, while holding VPDleaf and CO2s constant. Measurements were taken over 10 irradiance levels from 1500 to 0 μmol m-2 s-1 total PAR. For each irradiance level an average of the 5 log points prior to a change in irradiance constituted that measurement.
Access Level: Public
Originating Institution(s): Brookhaven National Laboratory
Sponsor Organization(s): None
Contact: Rogers, Alistair - Brookhaven National Laboratory (arogers@bnl.gov)
Version: 1.0
Dataset Citation: Davidson K; Serbin S; Ely K; Rogers A (2022): Stomatal response curves of hybrid poplar, New York, USA, 2020. 1.0. NGEE Tropics Data Collection. (dataset). http://dx.doi.org/10.15486/ngt/1783681
Acknowledgement: This research was supported as part of NGEE-Tropics, funded by the U.S. Department of Energy, Office of Science, Office of Biological and Environmental Research under contract no. DE-SC0012704.
Data Link: Download Dataset
Davidson K.J., Lamour J., Rogers A., and Serbin S.P. (2022). Late day measurement of excised branches results in uncertainty in the estimation of two stomatal parameters derived from response curves in Populus deltoides Bartr. x Populus nigra L. Tree Physiology, https://doi.org/10.1093/treephys/tpac006
