Table 2.

Mean parameter values for the plant species-level descriptors for island, habitat and level of invasion. Significant differences for α = 0.05 are marked with asterisk (*).

	island			habitat			invasion			plant origin
	mean			mean			mean			mean			island x invasion	island x origin	invasion x origin
	S. Cruz	S. Cristóbal	p	dry	humid	p	native	invaded	p	native	alien	p	p	p	p
plant linkage level	1.65	1.72	0.228	1.60	1.97	0.024*	1.62	1.77	0.223	1.83	1.72	0.105	0.760	0.010*	0.864
plant specialization (d')	0.26	0.29	0.212	0.26	0.31	0.044*	0.28	0.26	0.885	0.26	0.25	0.726	0.113	0.156	0.032*
plant strength	0.49	0.45	0.009*	0.32	0.97	0.000*	0.42	0.52	0.105	0.58	0.36	0.007*	0.222	0.000*	0.156