Table 1. Results of perMANOVA analysis of the Bray-Curtis dissimilarities for bacterial OTU community structure in relation to tree species, decay class (assigned based on the remaining mass of the log in question), management regime, and their interaction, Df = degrees of freedom; SS = sum of squares; MS = mean sum of squares; Pseudo-F = F value by permutation. Bold face indicates statistical significance (P < 0.05); P-values are based on 9999 permutations (i.e. the lowest possible P-value is 0.0001).

	Df	SS	F	R2	P
Tree species	1	0.8052	5.6484	0.09982	0.0001
Decay class	1	0.6076	4.2622	0.07532	0.0001
Management type	2	0.3967	1.3914	0.04918	0.0527
Tree species x Decay class	1	0.2377	1.6674	0.02947	0.0315
Tree species x Management type	2	0.4011	1.4068	0.04972	0.0466
Decay class x Management type	2	0.3474	1.2186	0.04307	0.1492
Tree species x Decay class x Management type	2	0.2815	0.9872	0.03489	0.4543
Residuals	35	4.9895		0.61853
Total	46	8.0667		1