Archaea and Bacteria Acclimate to High Total Ammonia in a Methanogenic Reactor Treating Swine Waste

Figure 6

Parametric correlation (Pearson’s R coefficient) of methane production, total NH₃-N (TAN) concentration, and key Bacteria and Archaea identified during operation of the anaerobic reactor treating swine waste. Phylotypes in purple, orange, blue, and red represent fermenters, syntrophs, and hydrogenotrophic and acetoclastic methanogens, respectively. Phylotypes that are most similar to fermenters and syntrophs are indicated in a combination of purple and orange colors. Note.   is significant at the 0.05 level (2-tailed). is significant at the 0.01 level (2-tailed). The statistical analysis was not corrected for multiple comparisons.