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Table 4 Cosmopolitan methanogen OTUs and their significant (p < 0.01) co-occurrent OTUs in all samples

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

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