Biology
Bacteroidetes
Gammaproteobacteria
Ecology
Alphaproteobacteria
Relative species abundance
Proteobacteria
Null model
Betaproteobacteria
Firmicutes
Microbial population biology
Abundance (ecology)
Effluent
16S ribosomal RNA
Environmental science
Actinobacteria
Gene
Bacteria
Environmental engineering
Biochemistry
Genetics