TABLE 1

Two-way analysis of variance (ANOVA) for relative abundances of the dominant bacterial phyla and classes (>1%) in the microcosms across different sampling days and Cd levelsa

TaxonTimeCdTime × Cd
FPFPFP
Phyla
    Unclassified20.3<0.0011.300.2872.730.012
    Actinobacteria417.3<0.0011.870.1484.96<0.001
    Bacteroidetes39.1<0.00111.9<0.0013.090.005
    Cyanobacteria4.200.0101.690.1811.490.180
    Lentisphaerae13.4<0.0011.200.3201.200.315
    Planctomycetes20.7<0.0019.13<0.0018.39<0.001
    Proteobacteria108.5<0.0017.76<0.0014.29<0.001
    Verrucomicrobia53.8<0.00135.2<0.00139.5<0.001
Classes
    Acidimicrobiia316.4<0.0012.340.0853.770.001
    Actinobacteria222.0<0.0015.240.0034.90<0.001
    Unclassified Bacteroidetes21.2<0.0013.260.0301.630.134
    Flavobacteria26.6<0.00120.9<0.0013.080.005
    Sphingobacteria32.2<0.00115.2<0.0013.220.004
    Oscillatoriophycideae3.750.0172.320.0871.960.066
    Synechococcophycideae4.440.0081.270.2941.140.354
    Lentisphaeria13.4<0.0011.200.3201.200.315
    Phycisphaerae7.43<0.00127.8<0.0017.41<0.001
    Planctomycetia17.0<0.0017.88<0.0018.08<0.001
    Alphaproteobacteria36.0<0.0015.440.0031.820.090
    Betaproteobacteria11.3<0.0011.850.1511.040.425
    Deltaproteobacteria1.570.2102.650.0591.370.231
    Gammaproteobacteria13.3<0.0010.450.7170.430.913
    Opitutae28.0<0.00118.8<0.00124.2<0.001
  • a Bold values represent significant influence of factors on metrics (P < 0.05).