Table 2.
The OTUs contributing most to the Bray-Curtis dissimilarity between LA and HA reactor communities from Day 230 to 347 as identified by SIMPER analysis.
| OTU ID (taxonomy) | Cumulative | Mean abundance (%) | |
|---|---|---|---|
| Archaea | contribution (%) | HA | LA |
| OTU_1 (Methanosarcinaceae) | 36.8 | 12.1 | 49.6 |
| OTU_2 (Methanosaeta) | 46.0 | 18.0 | 8.9 |
| OTU_14 (Methanospirillum) | 54.0 | 0.0018 | 8.2 |
| OTU_3 (Methanobacterium) | 59.8 | 14.7 | 10.2 |
| OTU_12 (Unclassified)* | 64.3 | 5.9 | 1.4 |
| OTU_9 (Unclassified)* | 68.7 | 6.0 | 1.6 |
| OTU_13 (Unclassified)* | 72.8 | 5.3 | 1.2 |
| OTU_10 (Methanoculleus) | 76.4 | 4.1 | 0.5 |
| Bacteria | |||
| OTU_3 (Bacteroidetes) | 10.41 | 14.9 | 0.1 |
| OTU_1 (Clostridiaceae_1) | 18.55 | 12.4 | 4.9 |
| OTU_2 (Anaerolineae) | 26.40 | 15.4 | 4.5 |
| OTU_9 (Syntrophomonadaceae) | 33.15 | 2.5 | 11.4 |
| OTU_7 (Unclassified/Hydrogenedentes)** | 37.27 | 0.0016 | 5.9 |
| OTU_12 (Unclassified/Chloroflexi)** | 39.78 | 4.17 | 0.8 |
| OTU_6 (Syntrophomonadaceae) | 42.19 | 4.9 | 2.5 |
| OTU_19 (Clostridiales) | 43.92 | 2.7 | 0.2 |
*The unclassified archaeal OTUs were part of the non-euryarchaeotal archaea cluster (see Fig. 4). **The unclassified bacterial OTUs were suggested to be Hydrogenedentes (OTU_7) and Chloroflexi (OTU_12), but with low confidence thesholds.