Figure 3
Natural logarithm response ratios (lnRR) for the individual effect of UVR (A), CO2 (B), mixing—Mix (C) and nutrients—Nut (D), their 2- (E–G), 3- (H–J) and 4-level lnRRInt (K) interaction in Lakes Río Seco Superior (RSS), Aguas Verdes (AV), Lagunillos de la Virgen (LV), Las Yeguas (LY), La Caldera (LC), Santos Morcillo (SM), San Pedro (SP), Colgada (CO) and Morenilla (MO). The bars represent the mean of three replicates, and the vertical lines the pooled standard deviation for equal sample size (see “Methods”). The letters on top of bars indicate significant differences by the Least Significant Differences (LSD) post hoc test. Note different y-axis scales. The values > 0 denote a synergistic effect, and < 0 an antagonistic effect.
