The core populations and co-occurrence patterns of prokaryotic communities in household biogas digesters

Table 2 Taxonomic information of dominant modules in the networks of all samples (AS), Cluster I (C1), and II (C2)

	Number of nodes	Module hubs	Methanogens	Abundant phyla/classes
(1) AS	110
AM1	27	Bacteroidales, Sphaerochaeta, Treponema, Methanocorpusculum, etc.	Methanocorpusculum, Methanoculleus	Bacteroidetes, Spirochaetes
AM4	19	Clostridium, Clostridium XI		Clostridia
AM5	11	Clostridium		Clostridia
AM7	15	Bacteroidales, Parabacteroides, Desulfobulbus, Syntrophus	Methanosaeta	Bacteroidetes, Spirochaetes, Euryarchaeota
AM8	21	Sphaerochaeta, Bacteroidaceae, Porphyromonadaceae		Bacteroidetes, Spirochaetes, Clostridia
(2) C1	103
C1M0	13	Coriobacteriales, Leucobacter etc.		Clostridia, Actinobacteria, Synergistetes
C1M1	28	Clostridium, Pirellulaceae, Gaiellales, etc.	Methanosaeta	Clostridia, Chloroflexi, Actinobacteria
C1M2	24	Clostridium, Ruminococcaceae, Erysipelotrichaceae	Methanosarcina	Clostridia
C1M4	18	Clostridium, Clostridia, Coriobacteriales, Syntrophomonas		Clostridia
C1M6	10	Sphingomonas		Alphaproteobacteria, Gammaproteobacteria
(3) C2	206
C2M0	9			Clostridia
C2M1	36	Sphaerochaeta, Bacteroidales, Clostridium, Tissierella, Treponema, Cloacibacillus, etc.		Spirochaetes, Bacteroidetes, Clostridia
C2M2	60	Coriobacteriales	Methanocorpusculum	Clostridia, Bacteroidetes, Spirochaetes
C2M4	9			Clostridia, Sphaerochaeta, Bacilli, Actinobacteria
C2M5	29	Bacteroidales, Syntrophus, Syntrophomonas, Treponema	Methanosaeta	Spirochaetes, Bacteroidetes, Deltaproteobacteria, Clostridia, Chloroflexi, Euryarchaeota
C2M6	22		Methanogenium	Clostridia, Spirochaetes, Bacteroidetes
C2M8	33			Clostridia, Spirochaetes, Bacteroidetes

ISSN: 2731-3654