Table 4 Cosmopolitan methanogen OTUs and their significant (p < 0.01) co-occurrent OTUs in all samples
Cosmopolitan | Co-occurrents | Spearman’s ρ | Co-occurrent affiliations | Co-occurrent affiliated phylum | Number of co-occurring samples |
|---|---|---|---|---|---|
(a) OTU23 (Methanocorpusculum) | |||||
OTU74 | 0.675 | Parabacteroides | Bacteroidetes | 20 | |
OTU78 | 0.722 | Porphyromonadaceae | Bacteroidetes | 23 | |
OTU1240 | 0.628 | Bacteroidales | Bacteroidetes | 20 | |
OTU128 | 0.721 | Sphaerochaetaceae | Spirochaetes | 22 | |
OTU64 | 0.786 | Bacteroidaceae | Bacteroidetes | 23 | |
OTU38 | 0.708 | Sphaerochaeta | Spirochaetes | 23 | |
OTU125 | 0.746 | Anaeroplasmataceae | Tenericutes | 22 | |
OTU416 | 0.840 | Sphaerochaeta | Spirochaetes | 24 | |
OTU44 | 0.720 | Candidatus Cloacamonas | Spirochaetes | 23 | |
OTU169 | 0.826 | Treponema | Spirochaetes | 25 | |
OTU137 | 0.686 | Bacteroidales | Bacteroidetes | 23 | |
OTU48 | 0.749 | Bacteroidaceae | Bacteroidetes | 22 | |
OTU92 | 0.672 | Bacteroidales | Bacteroidetes | 20 | |
OTU339 | 0.659 | Bacteroidales | Bacteroidetes | 21 | |
OTU47 | 0.661 | Lachnospiraceae | Firmicutes | 21 | |
OTU91 | 0.637 | Treponema | Spirochaetes | 23 | |
OTU303 | 0.651 | Anaerovorax | Firmicutes | 20 | |
OTU844 | 0.722 | Sedimentibacter | Firmicutes | 24 | |
OTU8 | 0.604 | Bacteroidales | Bacteroidetes | 26 | |
OTU72 | 0.859 | Sphaerochaeta | Spirochaetes | 27 | |
(b) OTU14 (Methanosaeta) | |||||
OTU52 | 0.666 | Porphyromonadaceae | Bacteroidetes | 25 | |
OTU96 | 0.653 | Syntrophus | Proteobacteria | 17 | |
OTU749 | 0.657 | Bacteroidales | Bacteroidetes | 23 | |
OTU12 | 0.689 | Candidatus Cloacamonas | Spirochaetes | 17 | |
OTU87 | 0.742 | Syntrophomonas | Firmicutes | 28 | |
OTU66 | 0.724 | Bacteroidales | Bacteroidetes | 23 | |
OTU119 | 0.703 | Clostridia | Firmicutes | 23 | |
(c) OTU142 (Methanoculleus) | |||||
OTU327 | 0.610 | Crenarchaeota | Crenarchaeota | 22 | |
OTU8 | 0.635 | Bacteroidales | Bacteroidetes | 32 | |
OTU38 | 0.619 | Sphaerochaeta | Spirochaetes | 21 | |
OTU137 | 0.714 | Bacteroidales | Bacteroidetes | 23 | |
OTU169 | 0.648 | Treponema | Spirochaetes | 22 | |
OTU91 | 0.660 | Treponema | Spirochaetes | 22 | |
OTU454 | 0.628 | Candidatus Cloacamonas | Spirochaetes | 24 | |