Table 2. Effects of grass species and N fertilization on N-cycling communities.

Results of ANOSIM (Analysis of Similarities) examining the importance of the effects of sampling time (season), N application rate (nitrogen), and grass species (grass) on N-cycling microbial community functional potential, based on a Bray-Curtis distance matrix of abundances of 5 functional genes (nifH, AOB amoA, nirK, nirS, and nosZ).

Factor	Genes		Transcripts
	R	p-value†	R	p-value†
Season	0.475	0.001	0.060	0.029
Nitrogen	−0.018	0.700	0.017	0.220
Grass	0.021	0.189	0.026	0.106
Season × Grass	0.425	0.001	0.055	0.053
Season × Nitrogen	0.342	0.001	0.069	0.068
Nitrogen × Grass	−0.004	0.469	0.039	0.122
Season × Nitrogen × Grass	0.384	0.001	0.051	0.199

Notes.

^†Bold values indicate p-value ≤ 0.05.