Table 1.

Effects of host and abiotic variables on the operational taxonomic unit richness of ectomycorrhizal fungi as revealed by generalized linear model and ANOVA analyses.

Variables	df	Deviance (% variation explained)	F-value	P-value
pH	1	13,770 (9.3)	83	<0.001
Host phylogeny	8	7001 (4.7)	5.275	<0.001
Ca	1	1957 (1.3)	11.794	<0.001
N: P ratio	1	1413 (1.0)	8.519	0.004
C	1	1642 (1.1)	9.898	0.002
Residuals	740	122769

df, degree of freedom; C, total soil carbon; N, total soil nitrogen; P, total soil phosphorus; Ca, total soil calcium.