Table 2.

P values for effects on different plant traits according to the ANOVA. Brackets indicate that the preceding factor is nested inside the factor within brackets; × indicate interacting effects of the preceding and following factors.

Plant trait	P values for different sources of variation
	Species	Plot (radiation)	Species × radiation	Species × plot (radiation)
Tree size and structure
Total	0.001	0.199	0.008	0.0001
Leaves	<0.0001	0.008	0.002	0.001
Branches + petioles	<0.001	0.232	0.002	0.253
Stem	0.268	0.489	0.006	0.001
Roots	0.023	0.005	0.015	<0.0001
RGR	<0.0001	0.183	0.052	<0.0001
% leaves	<0.0001	0.004	0.068	<0.0001
% branches + petioles	0.076	0.014	0.029	0.127
% stem	<0.0001	0.355	0.003	<0.0001
% roots	0.002	0.0001	0.007	0.029
Root:shoot ratio	0.002	0.001	0.012	0.014
Stem diameter	<0.0001	0.158	0.030	0.014
Stem height	<0.0001	0.087	0.020	0.0002
Stem height:diameter ratio	<0.0001	0.084	0.048	<0.0001
Height increment	<0.0001	0.036	0.001	0.001
Canopy leaf number	<0.001	0.006	0.0001	0.002
Wood density	<0.0001	0.251	0.003	0.351
Leaf structure
LMA	<0.001	<0.001	<0.001	0.007
Leaf mass	<0.001	0.140	0.0004	0.174
Leaf area	<0.001	0.0004	0.0002	0.006
Leaf length	<0.001	0.032	0.176	0.082
Leaf width	<0.001	0.317	0.003	0.447
Leaf thickness	<0.001	<0.001	0.503	0.599
Leaf angle	<0.001	0.063	0.002	0.050
Leaf physiology
An, light-saturated	<0.001	<0.001	0.002	0.872
Vcmax	0.006	0.086	0.006	0.720
Jmax	0.198	0.616	0.075	0.037
Jmax:Vcmax ratio	0.004	0.010	0.262	0.165
Rd, area-based	0.400	0.003	0.795	0.115
Rd, mass-based	<0.001	0.006	0.750	0.142
LCP	0.593	0.041	0.704	0.374
gs	<0.001	<0.001	0.115	0.490
iWUE	<0.001	<0.001	0.015	0.082
Leaf chemistry
Na	<0.001	0.784	0.332	0.022
Nm	<0.001	0.090	0.551	0.005
Pa	0.0002	0.163	0.070	<0.001
Pm	0.0003	0.101	0.040	<0.001
SPAD	<0.001	0.002	0.005	0.105

Figures in bold indicate significant P values.

V _cmax: maximum rates of photosynthetic carboxylation, J_max: maximum rates of electron transport, R_d: leaf dark respiration, LCP: light compensation point, g_s: stomatal conductance, A_n: light-saturated net CO₂ assimilation, P_a: leaf phosphorus content per unit area, P_m: leaf phosphorus content per unit mass, N_a: leaf nitrogen content per unit area, N_m: leaf nitrogen content per unit mass, LMA: leaf mass per unit leaf area, SPAD: proxy for leaf chlorophyll content, RGR: relative growth rate.