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

Table 2

Diversity of each sample at different time points during the startup phase of the methanogenic reactor treating swine waste. At the highest NH₃-N concentration, samples species diversity both for Archaea and for Bacteria was lowest.

Sample	NH3-N (mg/L)	Bacteria		Archaea
		PD-whole-tree	Observed-species	PD-whole-tree	Observed-species
Inoculum	N/A	67 ± 0.3	1512 ± 10	24 ± 0.2	375 ± 6
Batch	<1100	62 ± 0.3	1419 ± 7	25 ± 0.4	474 ± 10
Semicontinuous	~2000	52 ± 0.4	1173 ± 12	21 ± 0.1	361 ± 2

The indices corresponding to semicontinuous operation are averages of the indices for samples taken on days 70 and 105.