Table 1.

List of the most important symbols

Variables	Definition	Units
LAI	Leaf area index	m2 m−2
SLA	Specific leaf area	cm2 g−1
LMR	Leaf mass ratio	g g−1
LAR	Leaf area ratio	cm2 g−1
SMR	Stem mass ratio	g g−1
PPFD	Photosynthetic photon flux density	mol m−2 s−1
Φd	PPFD attained by an individual plant per day	mol plant−1 d−1
Φarea	PPFD per leaf area per day	mol cm−2 d−1
Φleaf mass	PPFD per leaf mass per day	mol g−1 d−1
Φmass	PPFD per total above-ground mass per day	mol g−1 d−1
Ea	Crown efficieny index	mol mol−1