Table 1.
Statistical information on the H2O2 experiment for three different endpoints: chlorophyll-a concentration (Chl-a), photosystem II efficiency (ΦPSII) and particle concentration (# mL−1) of Microcystis aeruginosa PCC 7820. Homogeneous subgroups were defined by a Tukey post hoc comparison at p < 0.05 and are indicated by similar symbols (a,b,c) per column.
| H2O2 treatment | Chl-a (µg L−1) | ΦPSII (-) | Particles (No. mL−1) | |||
|---|---|---|---|---|---|---|
| Tukey post hoc comparison | ||||||
| Control | a | a | a | |||
| 1 mg L−1 | a | a,b | a | |||
| 2 mg L−1 | a | b | a | |||
| 4 mg L−1 | b | c | b | |||
| 8 mg L−1 | c | c | b | |||
| repeated measures ANOVA | F | p | F | p | F | p |
| treatment effect (F4,10) | 367.5 | <0.001 | 284.1 | <0.001 | 102.4 | <0.001 |
| time effect (F3,30) | 695.3 | <0.001 | 145.5 | <0.001 | 80.0 | <0.001 |
| time × treatment interaction (F12,30) | 215.0 | <0.001 | 46.5 | <0.001 | 41.1 | <0.001 |
| nonlinear regression | r2 adj | r2 adj | r2 adj | |||
| EC50 (mg H2O2 L−1) | 3.8 | 0.992 | 2.5 | 0.947 | 2.6 | 0.929 |