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Table 5 Correlations between TRF abundances and WWTP process parameters a

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

AluI Identityb, c Observationsd Temp.e SRTf F/Mg CODh NO23-Ni
AluI 142 Methanosarcina b 2 **     
AluI 176 Methanosaeta c 24    ** *  
AluI 184 Methanosaeta c 33 *   *   
RsaI 142 Euryarchaeota b 3 ***     *
RsaI 238 Methanosaeta c 31 * *    *
RsaI 259 ARC I c 4 ***     *
  1. 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).