TABLE 1.

Trait abbreviations and definitions.

Trait	Abbreviation	Measurements used
Steady-state A at PPFD = 2000 μmol m–2 s–1	A2000	Steady-state PPFD curve
Steady-state gs at PPFD = 2000 μmol m–2 s–1	gs 2000	Steady-state PPFD curve
Steady-state iWUE at PPFD = 2000 μmol m–2 s–1	iWUE2000	Steady-state PPFD curve
Time required for A to come within 5% of steady-state after a decrease in PPFD	t95 A	Steady-state PPFD curve
Time required for gs to come within 5% of steady-state after a decrease in PPFD	t95 gs	Steady-state PPFD curve
Time required for iWUE to come within 5% of steady-state after a decrease in PPFD	t95 iWUE	Steady-state PPFD curve
Undershoot of steady-state A after a decrease in PPFD	Aundershoot	Steady-state PPFD curve
Undershoot of steady-state gs after a decrease in PPFD	gs undershoot	Steady-state PPFD curve
Undershoot of steady-state iWUE after a decrease in PPFD	iWUEundershoot	Steady-state PPFD curve
Average A under fluctuating PPFD		Fluctuating PPFD curve
Average iWUE under fluctuating PPFD		Fluctuating PPFD curve
Average deviation of A from steady-state following increases in PPFD		Steady-state and fluctuating PPFD curves
Average deviation of A from steady-state following decreases in PPFD		Steady-state and fluctuating PPFD curves
Average deviation of iWUE from steady-state following increases in PPFD		Steady-state and fluctuating PPFD curves
Average deviation of iWUE from steady-state following decreases in PPFD		Steady-state and fluctuating PPFD curves
Stomatal density		Stomatal profiles
Stomatal size		Stomatal profiles