Diversity and dynamics of Archaea in an activated sludge wastewater treatment plant

BMC Microbiology

Table 5 Correlations between TRF abundances and WWTP process parameters ^a

AluI	Identity^{b, c}	Observations^d	Temp.^e	SRT^f	F/M^g	COD^h	NO23-Nⁱ
AluI 142	Methanosarcina ^b	2	**
AluI 176	Methanosaeta ^c	24			**	*
AluI 184	Methanosaeta ^c	33	*		*
*RsaI*
RsaI 142	Euryarchaeota ^b	3	***				*
RsaI 238	Methanosaeta ^c	31	*	*			*
RsaI 259	ARC I ^c	4	***				*

^a The correlations are marked with asterisks corresponding to the level of statistical significance: 95% (*), 99% (**) and 99.9% (***). TRFs that are not included did not show any statistically significant correlation with any parameter. The WWTP process parameter data was taken from[22]. ^b Identification by comparison with the RDP database. ^c Identification by comparison with the clone library. ^d The number of times the TRF was observed. ^e Water temperature (°C). ^f Solids retention time (days). ^g Food to mass ratio ( g/kg*s). ^h Total COD going into the activated sludge tanks (g/s). ⁱ Nitrite/nitrate levels going in to the activated sludge tanks (g/s).

ISSN: 1471-2180