Parameter: Pmax

Dataset: 
Response of Ulva to OA and NH4+
Parameter: 
max photosynthesis
Master parameters information
Short Name:
 Pmax
Short Description:
 max photosynthesis
Official Name:
 Pmax
No Data Value:
Description:
 

maximum rate of photosynthesis, at given incubation temperature, under light-limiting conditions, (eg. mgC/chla/h), used in conjunction with irradiance measurements (eg. used in Southern Ocean Globec project)

Dataset-parameters information
Supplied Name: 
Pmax
Supplied Units: 
micromoles O2 per gram fresh water per minute (uM O2 g FW-1 min-1)
Datatype: 
Float
Conversion Necessary: 
no
No Data Value: 
nd
Description: 

Pmax = maximum photosynthetic rate. A photosynthesis-irradiance (P-I) curve was generated using various photon flux densities from 0 - 700 uM photons m-2 s-1 for 200 seconds each, following a 200 second dark period to measure dark respiration rate. The maximum photosynthetic rate (Pmax), light saturation point (Ik), and photosynthetic efficiency (the initial slope of the P-I curve) (alpha) were determined from the P-I curves.