TABLE 1.

Microbial diversity of the studied mixed culture at various phylogenetic levels

Taxonomy level	No. identified
	Metagenome	Metatranscriptome
Domaina	4	4
Phylum	62	57
Class	145	136
Order	303	266
Family	508	479
Genus	996	912
Species	2,323	1,970
Strain	3,544	3,006

^aThe four domains refer to bacteria, archaea, eukarya, and viruses. Viruses were excluded at other taxonomic levels because of their low abundance (<0.1%).