Parameter: rETR

Dataset: 
Porites astreoides Photosynthetic Induction PAM data, St. Johh U.S. Virgin Islands
Parameter: 
Electron Transport Rate (ETR)
Master parameters information
Short Name:
 ETR
Short Description:
 Electron Transport Rate (ETR)
Official Name:
 ETR
No Data Value:
Description:
 

Electron Transport Rate (ETR) including relative ETR, max ETR, and ETR change.

Electron transport rate (ETR), estimated from chlorophyll fluorescence, is a widely-used indicator of photosynthetic activity (Kitao et al., 2021).  It is used in pulse amplitude modulated (PAM) technology to calculate photosynthesis as the electron transport rate (ETR) through Photosystem II (PSII) (​Ritchie, 2012).  

Kitao, M., Yasuda, Y., Kodani, E., Harayama, H., Awaya, Y., Komatsu, M., ... & Agathokleous, E. (2021). Integration of electron flow partitioning improves estimation of photosynthetic rate under various environmental conditions based on chlorophyll fluorescence. Remote Sensing of Environment, 254, 112273. doi: 10.1016/j.rse.2020.112273

Ritchie, R. J. (2012). Photosynthesis in the blue water lily (Nymphaea caerulea Saligny) using pulse amplitude modulation fluorometry. International Journal of Plant Sciences, 173(2), 124-136. doi: 10.1086/663168

Dataset-parameters information
Supplied Name: 
rETR
Supplied Units: 
electron micromoles per square meter per secomd (umol electrons m-2 s-1)
Datatype: 
Float
Conversion Necessary: 
no
Description: 

relative Electron Transport Rate reported by the PAM from Porites astreoides after each saturation pulse.