Table 1. Summary of statistical analyses.

Factor		Lignin P-value	Lignin Trend	Time P-value	Time Trend
Enzyme activity	Phenol oxidase	<0.001	lignin>none	0.0675	T1>T2, T4
	Peroxidase	n.s.	n.a.	<0.0001	T1>>T2, T4
	Beta-glucosidase	n.s.	n.a.	<0.0001	T1, T2<T4
	Cellobiohydrolase	n.s.	n.a.	<0.0001	T1, T2<T4
	N-acetyl glucosaminidase	n.s.	n.a.	<0.0001	T1, T2<T4
	Xylosidase	n.s.	n.a.	<0.0001	T1, T2<T4
Q-PCR of total bacteria		n.s.	n.a.	<0.05	T1≤T2, T3≤T4
PhyloChip Microbial Community	Richness of bacteria	n.s.	n.a.	<0.001	T1, T4<T2, T3
	Net Relatedness Index (NRI)	n.s.	n.a.	0.0950	n.a.
	Nearest Taxon Index (NTI)	0.10	none>lignin	<0.01	T1>T2>T3, T4
Pyrosequencing Microbial Community	Richness of taxa	n.s.	n.a.	<0.0001	T1, T2<T3, T4
	Shannon's Diversity (H)	<0.05	lignin>none	<0.001	T1, T2<T3, T4

n.s. = not significant; n.a. = not applicable; NRI and NTI are measures of phylogenetic dispersion; see methods section for more detail.