Table 14. 1st dominant species status by survey site in Yeouicheon
Site | March | July | September | November |
1st dominnant species (pollution index) | DI | 1st dominnant species (pollution index) | DI | 1st dominnant species (pollution index) | DI | 1st dominnant species (pollution index) | DI |
Up stream | Asellus (2.3) | 0.69 | Asellus (2.3) | 0.46 | Baetis fuscatus (1.8) | 0.56 | Turbellaria (0.7) | 0.38 |
Seawon bridge | Asellus (2.3) | 0.71 | Asellus (2.3) | 0.85 | Baetis fuscatus (1.8) | 0.66 | Asellus (2.3) | 0.62 |
Yeoui bridge | Chironomidae (3.4) | 0.81 | Asellus (2.3) | 0.71 | Baetis fuscatus (1.8) | 0.89 | Asellus (2.3) | 0.92 |