TABLE 3.

Results of canonical correspondence analyses (CCA) of ECM fungal community.

Dataset	Explanatory variables	Covariates	Explained variability	Pseudo-F	p
Roots	Tree species	Plot × year	4.7	7.9	0.001
	Management type	Year	1.0	3.4	0.001
	Soil horizon	Plot × year	2.1	2.2	0.001
Trees	Tree species	Plot × year	9.9	5.4	0.001
	Management type	Year	2.2	2.4	0.003
Picea abies	Management type	Year	5.3	2.1	0.003
Larix decidua	Management type	Year	4.6	1.8	0.019
Betula pendula	Management type	Year	3.6	1.4	0.193
Plots	Management type	Year	11.7	2.2	0.001

Datasets were based on the presence of ECM fungal species in plots, trees, and roots. Variations in ECM fungal community data explained by selected explanatory variables were summarized after removing the effects of covariates (year, interaction of plot and year).