Skip to main content

Table 1 Results of one-way ANOVA

From: Water quality impacts of small-scale hydromodification in an urban stream in Connecticut, USA

Water quality indicator ANOVA between sampling sites ANOVA between periods
Before construction During construction After construction Site A Site B Site C Site D
Turbidity F 0.127 4.051 1.445 0.623 6.346 46.927 12.429
p value 0.944 0.010 0.238 0.542 0.004 < 0.001 < 0.001
DO F 0.105 0.149 0.118 2.881 1.588 5.552 2.896
p value 0.956 0.929 0.948 0.090 0.239 0.017 0.091
Nitrate F 1.138 0.479 0.044 47.000 59.305 48.666 44.006
p value 0.340 0.698 0.988 < 0.001 < 0.001 < 0.001 < 0.001
TP F 0.067 0.410 0.502 14.038 142.671 26.721 61.170
p value 0.977 0.746 0.682 < 0.001 < 0.001 < 0.001 < 0.001
Macroinvertebrate taxon richness F 17.459 5.687 1.113 2.442 5.000 46.731 2.016
p value < 0.001 0.006 0.370 0.121 0.022 <0.001 0.173
Shannon-Weaver macroinvertebrate species diversity F 5.705 1.711 2.189 3.782 3.029 5.239 0.500
p value 0.005 0.197 0.125 0.049 0.081 0.020 0.618
  1. Left: Comparison of sampling site means of turbidity, DO, nitrate, TP, macroinvertebrate taxon richness, and Shannon-Weaver macroinvertebrate species diversity, evaluated for the periods before (BE), during (DU), and after construction (AF). Right: Comparison of periodic means (BE, DU, AF) of the same variables per sampling site