Measurements of leaf net photosynthesis at the EucFACE experiment, on leaves of different trees growing in ambient and elevated CO$_2$ concentrations. Measurements were repeated four times during 2013 (labelled as Date=A,B,C,D).
eucface_gasexchangeA data frame with 84 rows and 7 variables:
Datefactor Date label (A-D)
CO2integer CO2 treatment, Amb=ambient, Ele=elevated
Ringinteger One of six plots ('rings') where treatment was applied
Treeinteger Tree number
Photodouble Rate of leaf photosynthesis (mu mol m-2 s-1)
Trmmoldouble Rate of leaf transpiration (mmol m-2 s-1)
VpdLdouble Vapour pressure deficit (kPa)