marginally non-significantP = 0.051
For undersides, ANOVA yielded a marginally non-significant result for the effect of site (F 3,26 = 2.96, P = 0.051), but pairwise comparisons showed that FER, IGL and OBS formed one homogeneous subset, and OBS and IUI another, indicating that biomass at IUI but not OBS was significantly lower than that at the two artificial reefs.