| Model effects | Estimates | Standard errors | Z-values |
| Intercept | 0.916 | 0.119 | 7.652*** |
| Natural wetland | 1.061 | 0.116 | 9.147*** |
| Constructed wetland | 0.875 | 0.119 | 7.355*** |
| B. bauchiensis vs Constructed | 0.678 | 0.136 | 5.000*** |
| Time (Weeks) | 0.083 | 0.004 | 21.583*** |