Results of a two-way grouped ANOVA with repeated measures.

The significance of the effect of the factors nutrients, acidification, and temperature has been contrasted against their respective controls for the different size-fractions of chlorophyll a (i.e., Nutrients: M2 vs M1; Acidification M3 vs M2; Temperature: M4 vs M3). Significance level for the entire period is indicated with asterisks for each size-fraction. Moreover, significant differences between treatments at specific days (Bonferroni post hoc test) at p<0.05 are also indicated. Note that a variable may not be significantly different from its control for the entire period, but showing significant differences at specific dates.
ns = not significant; * = p<0.05; ** = p<0.01; *** = p<0.001.