Standard deviations of environmental factors for each of the ecological groups. a Temperature [I =Stressed, II = GWstable, III = GWrainfed (recharged by precipitation), IV = GWswb (surface water body-recharged), V = Hyporheic] b DO-concentration, and c) detritus contents (estimated). Box = Interquartile range, vertical black bar = median; whiskers showing the lowest and highest non-outlier. Circles showing outliers and stars extreme outliers.