| Relative Values | Shannon Index | Evenness Index |
| Very high | 3.5 and above | 0.75 - 100 |
| High | 3.0 - 3.49 | 0.5 - 0.74 |
| Moderate | 2.5 - 2.99 | 0.25 - 0.49 |
| Low | 2.0 - 2.49 | 0.15 - 0.24 |
| Very low | 1.9 and below | 0.05 - 0.14 |