Table 4. PERMANOVA and mixed model ANOVA analysis of bacterial and fungal community for each of the eight collection dates.

Month	Community composition				Community evenness
	Drought		Nitrogen addition		Drought		Nitrogen addition
	Bacteria	Fungi	Bacteria	Fungi	Bacteria	Fungi	Bacteria	Fungi
Year 1
April 2010	NS	0.089	NS	NS	NS	NS	NS	0.009
August 2010	NS	NS	0.069	NS	NS	0.032	NS	NS
December 2010	0.016	NS	NS	NS	NS	0.001	NS	NS
February 2011	0.043	0.042	NS	NS	0.044	0.001	NS	NS
Year 2
June 2011	NA	NS	NS	NS	NS	0.06	NS	NS
September 2011	0.079	0.012	0.03	NS	0.098	NS	0.018	NS
December 2011	0.07	0.038	0.048	0.048	0.023	0.009	NS	0.019
March 2012	NS	0.013	NS	0.019	NS	<0.001	NS	0.008

Abbreviations: ANOVA, analysis of variance; NA, not available; NS, not significant; PERMANOVA, permutational multivariate analysis of variance.

Each model included the variables of Treatment and Block. The significant and marginal P-values for the variable Treatment are reported.