only marginally significantP = 0.05
If data were examined by date, A max differed significantly with substrate in April ( F 1, 18 = 7.15, P = 0.02); but in July, differences were only marginally significant ( F 1, 18 = 4.24, P = 0.05).
If data were examined by date, A max differed significantly with substrate in April ( F 1, 18 = 7.15, P = 0.02); but in July, differences were only marginally significant ( F 1, 18 = 4.24, P = 0.05).