General comparison of the biotic and abiotic variables of the water column among treatments.

DIN = Dissolved inorganic nitrogen; TDN = Total dissolved nitrogen; DIP = Dissolved inorganic phosphorus; TDP = Total dissolved phosphorus; TN = Total nitrogen; TP = Total phosphorus. Results are the mean (± SD) throughout the weeks (2nd to 7th week). Different letters above mean values represent significant differences (RM-ANOVA with Contrast Analysis as post hoc test, P<0.05).