Fig. 3.

Phylogenetic tree of the dominant OTUs in the aerobic SCN⁻ fed R1 bioreactor and stacked bars of single OTUs. The tree with the highest maximum log likelihood (−2032.68) is shown, alongside close relative species (blue text) obtained from NCBI GenBank. DNA was extracted and the 16S rRNA gene was sequenced; from the inoculum; at day 300 after 69 days at 15 °C; and at day 338 after 38 days at 10 °C. The grouping “Other OTUs” comprises OTUs with less than 1% total relative abundance (among all samples summed)