Open Access
Table 3
Median values of water quality parameters differing significantly between floating macrophyte treatments (n = 15; Kruskal–Wallis ANOVA). Asterisks indicate significant differences compared with the control (without macrophytes): Dunn's methods. pH was not scored due to its high variability in the control (see text).
| Macrophytes | NH4+−N (mg L−1) P = 0.013 |
Score | NO3−−N (mg L−1) P = 0.005 |
Score | Dissolved oxygen (DO) (mg L−1) P < 0.001 | Score | pH P < 0.001 |
Total dissolved solids (TDS) (mg L−1) | Score P < 0.001 | Average score |
|---|---|---|---|---|---|---|---|---|---|---|
| Lemna minor | 0.09 | 4 | 0.30** | 1 | 5.78*** | 2 | 7.16** | 40 | 1 | 2.0 |
| Azolla filiculoides | 0.17* | 1 | 0.10 | 5 | 5.57*** | 1 | 6.59*** | 19*** | 5 | 3.0 |
| Salvinia molesta Sm2 | 0.16 | 2 | 0.20* | 3 | 5.87*** | 3 | 6.77*** | 33** | 1 | 2.3 |
| Salvinia molesta Sm1 | 0.13 | 3 | 0.10 | 5 | 6.69* | 4 | 7.26** | 32* | 2 | 3.3 |
| Echhornia crassipes | 0.04 | 5 | 0.20 | 2 | 7.27 | 5 | 7.06*** | 26*** | 4 | 4.0 |
| Control | 0.05 | – | 0.10 | − | 8.82 | − | 8.87 | 46 | – | – |
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.