This gasexchange_ChlF_readme.txt file was generated on 2022-02-15 by Jimei Han


GENERAL INFORMATION

1. Title of Dataset: Data from:The Physiological Basis for Estimating Photosynthesis from Chlorophyll a Fluorescence 

2. Author Information
	A. Principal Investigator Contact Information
		Name: Ying Sun
		Institution: Cornell University
		Address: 306 Tower Road, 1023 Bradfield Hall
		Email: ys776@cornell.edu

	B. Associate or Co-investigator Contact Information
		Name: Jimei Han
		Institution: Cornell University
		Address: 306 Tower Road, 1019 Bradfield Hall
		Email: jh2757@cornell.edu, hanjmling@foxmail.com

	
3. Date of data collection <YYYY-MM-DD>: 2017-07-01 to 2017-07-30; 2017-12-01 to 2017-12-30; 2020-05-15 to 2020-08-10

4. Geographic location of data collection: 35°54’N, 84°20’W; 42°43’N, 76°40’W; 42°26’N, 76°28’W

5. Information about funding sources that supported the collection of the data: 
NSF Macrosystem Biology to YS, Grant #:1926488
USDA-NIFA Hatch Award to YS, Grant #: 1014740
NASA MEaSures project to YS
USDA-NIFA and Agriculture Hatch Fund to YZ, Grant #: ME022021
This research is also supported by the US Department of Energy (DOE), Office of Science, Biological and Environmental Research Program. ORNL is managed by UT-Battelle, LLC, for DOE under contract DE-AC05-00OR22725.
 
SHARING/ACCESS INFORMATION

1. Licenses/restrictions placed on the data: CC-BY

2. Links to publications that cite or use the data: 
Han J., Chang C. Y., Gu L., Zhang Y., Meeker E.W., Magney T.S., Walker A.P., Wen J., Kira O., McNaull S., Sun Y. (2022) The Physiological Basis for Estimating Photosynthesis from Chlorophyll a Fluorescence. New Phytologist, 234(4), 1206–1219. https://doi.org/10.1111/nph.18045
 
3. Was data derived from another source? no

4. Recommended citation for this dataset: 
Jimei Han, Lianhong Gu, Yongjiang Zhang, Ying Sun. (2022) Data from: The Physiological Basis for Estimating Photosynthesis from Chlorophyll a Fluorescence. [dataset] Cornell University eCommons Repository. https://doi.org/10.7298/q3hb-zq56
 

DATA & FILE OVERVIEW

1. File List: 
Broadleaf_deciduous_liana_tropical.csv - gas exchange and chlorophyll fluorescence data for 3 replicates × 3 species from PFT of tropical broadleaf deciduous liana
Broadleaf_deciduous_shrub_temperate.csv - gas exchange and chlorophyll fluorescence data for 3 or 4 replicates × 3 species from PFT of temperate broadleaf deciduous shrub
Broadleaf_deciduous_tree_boreal.csv - gas exchange and chlorophyll fluorescence data for 3 replicates × 2 species from PFT of boreal broadleaf deciduous tree
Broadleaf_deciduous_tree_temperate.csv - gas exchange and chlorophyll fluorescence data for 3 or 4 replicates × 6 species from PFT of temperate broadleaf deciduous tree
Broadleaf_deciduous_tree_tropical.csv - gas exchange and chlorophyll fluorescence data for 3 replicates × 4 species from PFT of tropical broadleaf deciduous tree
Broadleaf_evergreen_tree_tropical.csv - gas exchange and chlorophyll fluorescence data for 3 replicates × 3 species from PFT of tropical broadleaf evergreen tree
C3_Crop.csv - gas exchange and chlorophyll fluorescence data for 3 replicates × 2 species from PFT of C3 crop
C3_Grass.csv - gas exchange and chlorophyll fluorescence data for 4 replicates × 1 species from PFT of C3 grass
C4_Crop.csv - gas exchange and chlorophyll fluorescence data for 4 replicates × 1 species from PFT of C4 crop
C4_Grass.csv - gas exchange and chlorophyll fluorescence data for 3 replicates × 3 species from PFT of C4 grass
Needleaf_evergreen_tree_boreal.csv - gas exchange and chlorophyll fluorescence data for 3 replicates × 1 species from PFT of boreal Needleaf evergreen tree
Andropogon_gerardii.csv - gas exchange and chlorophyll fluorescence data for 3 or 4 replicates × 5 different temperatures (20 oC, 25 oC, 30 oC, 35 oC, 40 oC) from C4 species of Andropogon gerardii  
Cornus_racemosa_Cuyzam.csv - gas exchange and chlorophyll fluorescence data for 3 or 4 replicates × 5 different temperatures (20 oC, 25 oC, 30 oC, 35 oC, 40 oC) from C3 species of Cornus_racemosa_‘Cuyzam’

2. Relationship between files, if important: 
These are gas exchange and chlorophyll a fluorescence data from 29 species of 11 plant function types, organized into 13 files; each csv includes data from one plant function type. 

3. Additional related data collected that was not included in the current data package: 

4. Are there multiple versions of the dataset? no
	


METHODOLOGICAL INFORMATION

1. Description of methods used for collection/generation of data: 
See associated manuscript section Notes S2-S3.
Han J., Chang C. Y., Gu L., Zhang Y., Meeker E.W., Magney T.S., Walker A.P., Wen J., Kira O., McNaull S., Sun Y. (2022)
The Physiological Basis for Estimating Photosynthesis from Chlorophyll a Fluorescence. New Phytologist.(in press)
 
2. Methods for processing the data: 
Data were filted according to the quality control criteria (see Notes S4 in the associated manuscript)

3. Instrument- or software-specific information needed to interpret the data: 
<include full name and version of software, and any necessary packages or libraries needed to run scripts>
LI-6800 gas exchange analyzer (LI-COR Inc., Lincoln, NE, USA) equipped with leaf multiphase flash fluorometer chamber (6800-01A, LI-COR Inc); 
GFS-3000 gas exchange analyzer (Walz, Effeltrich, Germany) equipped with fluorescence measuring head (3010-S, Walz) 

4. Standards and calibration information, if appropriate: 
See associated manuscript section Notes S3

5. Environmental/experimental conditions: 
See associated manuscript section Notes S2

6. Describe any quality-assurance procedures performed on the data: 
See associated manuscript section Notes S3

7. People involved with sample collection, processing, analysis and/or submission: 
Han J., Gu L., Zhang Y., Sun Y.

DATA-SPECIFIC INFORMATION FOR: each .csv file from all folders

1. Number of variables: 14

2. Number of cases/rows: varies for different .csv files - depends on the species and temperature treatments

3. Variable List: 
Species : species
Tleaf : leaf temperature in °C
LeafReplicateNumber : replicate number for individual leaf
PARi : photosynthetically active radiation in µmol m-2 s-1
CO2R : reference CO2 concentration in µmol mol-1
Ci : intercellular CO2 concentration in µmol mol-1
Anet : net photosynthesis in µmol m-2 s-1
Fm' : maximum chlorophyll a fluorescence under light in mV 
Fs : steady-state chlorophyll a fluorescence under light in mV 
VpdL : leaf-to-air vapour pressure deficit in kPa
Press : air pressure in kPa
OxygenPress : the pressure of oxygen in kPa
Fo : minimum chlorophyll a fluorescence under fully dark-adapted conditions in mV 
Fm : maximum chlorophyll a fluorescence under fully dark-adapted conditions in mV 


4. Missing data codes: 
N/A

5. Specialized formats or other abbreviations used: 
N/A