Table 3.

Generalized Linear Model showing the most abundant (>90% relative abundance) and relevant (biomarker) orders of prokaryotes and their dependencies on environmental parameters.

Group	Temp	DM	pH	Ctot	Ntot	DOC
Acidimicrobiales
Acidobacteria Gp1	+**		–*
Acidobacteria Gp2			–*
Acidobacteria Gp3			–**			–**
Acidobacteria Gp4			+***
Acidobacteria Gp6			+***
Acidobacteria Gp7			+**
Acidobacteria Gp16
Actinobacteria unclassified			+*
Actinomycetales	+*		+**
Bacillales						+*
Bacteria unclassified	–**	–*	–*
Betaproteobacteria unclassified			+*
Burkholderiales		+*	+*			+*
Candidate division WPS-2			–**
Candidatus Saccharibacteria	+**		+*
Chloroflexi	–*		–*
Desulfuromonadales			+*
Flavobacteriales
Gaiellales			+**
Gammaproteobacteria unclassified			–**
Gemmatimonadales			+**
Ktedonobacterales			–*
Myxococcales						–*
Nitrososphaeraceae			–*			–*
Planctomycetales			–**
Pseudomonadales	+*			+*	–*
Rhizobiales	+**
Rhodospirillales			–***			–*
Solirubrobacterales			–**
Spartobacteria			+*
Sphingobacteriales		+*	+*			+*
Sphingomonadales			+*
Xanthomonadales	+***	+*		+**	+**

Temp, annual mean temperature; DM, dry matter content; Ctot, total carbon; Ntot, total nitrogen; and DOC, dissolved organic carbon.

^***p < 0.001,

^**p < 0.01,

^*p < 0.05;

+/– indicate positive (+) or negative (–) beta (b^*) values.