Table 1.

Bivariate SMA models for allometric relationships between leaf area, plant height, vessel traits, and theoretical conductance

Model	Intercept	Slope	R 2	95% CI
				Intercept	Slope
log LA ~ log H	–0.694	1.859	0.84	–0.996 to –0.391	1.725 to 2.00
log VDapex ~ log H	1.219	0.268	0.48	1.134 to 1.304	0.232 to 0.309
log VDbasal ~ log H	1.291	0.341	0.84	1.236 to 1.346	0.316 to 0.367
log NV ~ log H	0.172	1.493	0.90	–0.011 to 0.354	1.412 to 1.579
log VDbasal ~ log LA	1.427	0.180	0.73	1.371 to 1.482	0.165 to 0.198
log NV ~ log LA	0.786	0.789	0.89	0.637 to 0.936	0.746 to 0.835
log CA ~ log XA	4.931	1.064	0.98	4.875 to 4.987	1.040 to 1.088
log Kplant ~ log H	–3.491	1.825	0.94	–3.673 to -3.308	1.743 to 1.910
log Kplant ~ log LA	–2.759	0.969	0.89	–2.939 to -2.579	0.918 to 1.024

All relationships were derived from variables measured empirically, except for whole-plant conductance (K_plant), a trait derived from calculations based on empirically measured allometric relationships. H, plant height; K_plant, whole-plant conductance; LA, total leaf area; NV, total number of vessels; VD_apex, apical vessel diameter; VD_basal basal vessel diameter; XA, xylem area. n=139 and P<0.0001 in all cases. Normality was tested through the Shapiro–Wilk W-test on residuals.