Table 2. Non-parametric MANOVA table of the effects of genotype and site on insect herbivore community structure on B. pendula saplings in 2002–2003.

Sapling size index, which is a measure of height and number of leaves (see material and methods), was used as a covariate.

	Insect herbivore community 2002				Insect herbivore community 2003
	df	SS	F	P	df	SS	F	P
Genotype	21	27700	1.26	0.04	21	33294	2.04	< 0.001
Site	1	47798	16.99	< 0.001	1	10319	7.62	< 0.001
Block (Site)	10	17826	1.70	0.002	10	18013	2.31	< 0.001
G × S	21	22242	1.01	0.466	21	22472	1.37	0.006
Size index	1	4890	4.65	< 0.001	1	8084	10.38	< 0.001
Residual	208	218510			208	162000
Total	262	344260			262	274880