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Table 1 Overview of the number of bacterial OTUs that show a significant (P < 0.05) correlation with the operational parameters, based on the Kendall rank correlation coefficient. Only bacterial OTUs with a significant (P < 0.05) difference between DNA and RNA (203 OTUs in total) were considered

From: The active microbial community more accurately reflects the anaerobic digestion process: 16S rRNA (gene) sequencing as a predictive tool

Parameter DNA RNA
pH 5 7
Temperature 44 29
TAN 40 62
Free ammonia 8 16
Conductivity 35 43
Na+ 41 7
K+ 0 0
Total VFA 1 2
Acetate 0 0
Propionate 0 0
Butyrate 0 0
SRT 1 0
  1. TAN total ammonia nitrogen, VFA volatile fatty acids, SRT sludge retention time