Table 1.

Results (F values) of three-way ANOVA of responses of leaf longevity and biomass production to N and water addition

	Leaf longevity		Leaf biomass production
	2007	2008	2008
Species (Sp)	70·5***	173·65***	43·63***
Water (W)	128·93***	263·21***	55·69***
Nitrogen (N)	27·11***	77·22***	39·32***
W × N	0·33	16·87***	0·21
Sp × W	6·13***	14·73***	2·32
Sp × N	1·31	6·38***	5·18**
Sp × W × N	0·66	1·31	3·45*

Asterisks indicate statistically significant differences at *P < 0·05, **0·01 and ***0·001.