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

Figure 3

Archaeal distributions. (a) Phylotypes at the family level. (b) Phylotypes at the genera level. Shades of green are for Methanomicrobiales (hydrogenotrophic methanogens), blue for Methanobacteriales (hydrogenotrophic methanogens), red for Methanosarcinales (acetoclastic methanogens), and black for pGrfC26. The total NH₃-N concentration at the time of the batch sampling was 1140 mg/L. Semicontinuous operation is an average of two samples at ~2000 mg NH₃-N/L. “U_” stands for unidentified microorganism within the taxonomic classification.

(a)

(b)