Table 2. Relative abundance of OTUs affiliated with dominant phyla.
| a. A. millepora | Control | High pCO2 | a. C. singaporensis | Control | High pCO2 | % of Total |
|---|---|---|---|---|---|---|
| Proteobacteria (% of Total) | 83.5 | 68.8 | Proteobacteria (% of Total) | 23.3 | 10.8 | 0.1–0.5 |
| Alphaproteobacteria | 14.4 | 19.8 | Alphaproteobacteria | 2.8 | 2.3 | 0.6–1.0 |
| Caulobacteraceae | 3.5 | 2.6 | Pelagibacteraceae | 0.3 | 0.2 | 1.1–2.5 |
| Rhodobacteraceae | 2.4 | 2.9 | unclassified | 2.3 | 2.0 | 2.5–5.0 |
| Sphingomonadaceae | 1.5 | 0.8 | Deltaproteobacteria | 3.6 | 1.3 | 5.1–7.5 |
| unclassified | 3.7 | 6.9 | Syntrophobacteraceae | 0.9 | 0.4 | 7.6–10 |
| Betaproteobacteria | 2.2 | 4.4 | Entotheonellaceae | 2.6 | 0.8 | 10.1–25 |
| Comamonadaceae | 1.4 | 3.4 | Gammaproteobacteria | 0.6 | 0.3 | >25% |
| Gammaproteobacteria | 66.2 | 43.2 | HTCC2089 | 2.9 | 1.6 | |
| Hahellaceae | 51.6 | 26.4 | HTCC2188 | 0.5 | 0.4 | |
| Enterobacteriaceae | 1.8 | 0.6 | unclassified | 11.2 | 5.2 | |
| Halomonadaceae | 1.2 | 4.8 | Cyanobacteria (% of Total) | 35.0 | 70.1 | |
| Moraxellaceae | 3.7 | 2.9 | Synechococcaceae | 35.0 | 70.0 | |
| Pseudoalteromonadaceae | 1.5 | 0.5 | unclassified | 0.1 | 0.1 | |
| Pseudomonadaceae | 2.7 | 3.1 | ||||
| Actinobacteria | 6.55 | 9.82 | b. Cinachyra sp. | Control | High pCO2 | |
| Bacteroidetes | 2.72 | 5.72 | Proteobacteria (% of Total) | 39.6 | 31.8 | |
| Cyanobacteria | 2.05 | 4.19 | Alphaproteobacteria | 15.9 | 7.2 | |
| Firmicutes | 1.82 | 4.65 | Rhodobacteraceae | 6.6 | 2.8 | |
| unclassified | 1.48 | 2.90 | Rhodospirillaceae | 0.4 | 0.2 | |
| Pelagibacteraceae | 0.7 | 0.8 | ||||
| b. P. cylindrica | Control | High pCO2 | unclassified | 6.5 | 3.5 | |
| Proteobacteria (% of Total) | 45.0 | 43.8 | Deltaproteobacteria | 0.5 | 0.2 | |
| Alphaproteobacteria | 13.1 | 20.7 | unclassified | 0.1 | 0.1 | |
| Rhodobacteraceae | 1.6 | 4.1 | Gammaproteobacteria | 19.2 | 16.3 | |
| Rhodobiaceae | 1.4 | 1.1 | HTCC2089 | 1.3 | 2.6 | |
| unclassified | 7.6 | 11.1 | Piscirickettsiaceae | 0.9 | 0.2 | |
| Betaproteobacteria | 0.4 | 1.8 | OM60 | 0.3 | 0.2 | |
| Deltaproteobacteria | 0.5 | 1.3 | Alteromonadaceae | 0.3 | 0.1 | |
| Gammaproteobacteria | 29.9 | 16.1 | Colwelliaceae | 0.1 | 0.1 | |
| Alteromonadaceae | 11.4 | 1.1 | unclassified | 15.2 | 12.5 | |
| Chromatiaceae | 0.2 | 4.2 | Cyanobacteria (% of Total) | 14.7 | 30.0 | |
| Pseudoalteromonadaceae | 8.1 | 0.7 | Synechococcophycideae | 9.9 | 25.8 | |
| Vibrionaceae | 2.0 | 0.8 | Synechococcaceae | 7.2 | 25.7 | |
| unclassified | 1.5 | 8.9 | Pseudanabaenaceae | 2.6 | 0.1 | |
| Bacteroidetes (% of Total) | 13.3 | 12.8 | Oscillatoriophycideae | 0.6 | 0.4 | |
| Bacteroidia | 0.3 | 0.4 | Cyanobacteriaceae | 0.0 | 0.2 | |
| Cytophagia | 6.0 | 3.0 | Phormidiaceae | 0.0 | 0.1 | |
| Flavobacteriia | 1.3 | 7.0 | unclassified | 0.3 | 0.1 | |
| Saprospirae | 1.9 | 0.2 | ||||
| unclassified | 3.0 | 2.0 | c. S. massa | Control | High pCO2 | |
| Actinobacteria | 2.22 | 7.18 | Proteobacteria (% of Total) | 46.7 | 38.8 | |
| Cyanobacteria | 2.47 | 6.64 | Alphaproteobacteria | 16.0 | 15.3 | |
| Planctomycetes | 3.70 | 5.39 | Pelagibacteraceae | 12.7 | 10.6 | |
| Chloroflexi | 0.76 | 3.02 | Rhodobacteraceae | 2.6 | 4.2 | |
| unclassified | 3.00 | 2.00 | AEGEAN_112 | 0.3 | 0.2 | |
| unclassified | 0.1 | 0.1 | ||||
| Deltaproteobacteria | 6.3 | 2.0 | ||||
| unclassified | 6.2 | 1.9 | ||||
| Gammaproteobacteria | 23.1 | 20.7 | ||||
| Halomonadaceae | 1.8 | 3.6 | ||||
| unclassified | 20.5 | 16.5 | ||||
| Cyanobacteria (% of Total) | 33.9 | 40.5 | ||||
| Synechococcophycideae | 31.4 | 38.0 | ||||
| Synechococcaceae | 31.4 | 37.9 | ||||
| Bacteroidetes (% of Total) | 8.2 | 10.0 | ||||
| Cytophagia | 1.6 | 2.3 | ||||
| Flammeovirgaceae | 1.6 | 2.3 | ||||
| Flavobacteriia | 2.9 | 3.5 |
Abbreviation: OTUs, operational taxonomic units.