Table 1.

Phylogenetic signals for root diameter, root tissue density (RTD) and root N concentration (RN)

		Root diameter	RTD	RN
All species	Blomberg’s K	0.03	0.01	0.01
	Pagel’s λ	0.61	0.30	0.49
Woody	Blomberg’s K	0.08	0.01	0.01
	Pagel’s λ	0.83	0.31	0.52
Non-woody	Blomberg’s K	0.01	0.01	0.03
	Pagel’s λ	<0.001	0.57	0.33

Bold values indicate significant phylogenetic signals (p < 0.05)