Table 4
Total and relative (RA) abundances of macroinvertebrates at each station.
| Station | |||||
|---|---|---|---|---|---|
| Classes / Orders | Families | Control | Impacted | Downstream | RA (%) |
| Arachnida | |||||
| Hydracarina | – | 17 | 11 | 19 | 0.15 |
| Insect | |||||
| Coleoptera | Dytiscidae | 58 | 54 | 52 | 0.53 |
| Elmidae | 11 | 6 | 4 | 0.07 | |
| Gyrinidae | 43 | 16 | 7 | 0.21 | |
| Hydraenidae | 15 | 13 | 10 | 0.12 | |
| Hydrophilidae | 36 | 8 | 17 | 0.20 | |
| hydrophiloidae | 0 | 3 | 0 | 0.01 | |
| Staphylinidae | 37 | 10 | 9 | 0.18 | |
| Diptera | Ceratopogonidae | 242 | 926 | 639 | 5.79 |
| Chaoboridae | 8 | 18 | 11 | 0.12 | |
| Chironomidae | 2248 | 9375 | 6481 | 58.02 | |
| Culicidae | 65 | 69 | 92 | 0.72 | |
| Empididae | 12 | 6 | 3 | 0.07 | |
| Ephydridae | 12 | 6 | 5 | 0.07 | |
| Foncipomyine | 1 | 0 | 0 | 0.00 | |
| Psychodidae | 0 | 4 | 0 | 0.01 | |
| Sciomyzidae | 3 | 6 | 9 | 0.06 | |
| Simuliidae | 149 | 369 | 425 | 3.02 | |
| Stratiomyidae | 2 | 0 | 0 | 0.01 | |
| Syrphidae | 1 | 2 | 8 | 0.04 | |
| Tabanidae | 9 | 34 | 15 | 0.19 | |
| Ephemeroptera | Ameletidae | 4 | 0 | 0 | 0.01 |
| Baetidae | 105 | 6 | 22 | 0.43 | |
| Caenidae | 234 | 3 | 29 | 0.85 | |
| Ephemerellidae | 140 | 27 | 13 | 0.58 | |
| Ephemeridae | 79 | 0 | 8 | 0.28 | |
| isonychiidae | 66 | 5 | 12 | 0.27 | |
| Leptohyphidae | 92 | 25 | 2 | 0.37 | |
| Leptophlebiidae | 223 | 5 | 25 | 0.81 | |
| Potamanthidae | 42 | 0 | 0 | 0.13 | |
| Tricorytidae | 7 | 0 | 0 | 0.02 | |
| Heteroptera | Belostomatidae | 6 | 0 | 0 | 0.02 |
| Corixidae | 29 | 21 | 53 | 0.33 | |
| Gerridae | 11 | 11 | 29 | 0.16 | |
| Mesoveliidae | 21 | 36 | 20 | 0.25 | |
| Naucoridae | 3 | 0 | 8 | 0.04 | |
| Notonectidae | 33 | 36 | 98 | 0.54 | |
| Veliidae | 52 | 46 | 63 | 0.52 | |
| Odonata | Aeschnidae | 8 | 47 | 23 | 0.25 |
| Calopterygidae | 5 | 0 | 1 | 0.02 | |
| Gomphidae | 94 | 208 | 159 | 1.48 | |
| Lestidae | 107 | 145 | 357 | 1.95 | |
| Libellulidae | 83 | 167 | 363 | 1.96 | |
| Plecoptera | Perlidae | 30 | 0 | 0 | 0.10 |
| Perlodidae | 19 | 0 | 0 | 0.06 | |
| Trichoptera | Dipseudopsidae | 8 | 0 | 0 | 0.03 |
| Hydropsychidae | 973 | 277 | 524 | 5.69 | |
| Hydroptilidae | 10 | 0 | 0 | 0.03 | |
| Leptoceridae | 9 | 0 | 2 | 0.04 | |
| Limnphilidae | 2 | 0 | 0 | 0.01 | |
| Bivalvia | |||||
| Eulamellibranchia | Unionidae | 2 | 1 | 1 | 0.01 |
| Sphaeriidae | 4 | 49 | 35 | 0.28 | |
| Gastropoda | |||||
| Mesogastropoda | Bithyniidae | 21 | 67 | 6 | 0.30 |
| Hydrobiidae | 31 | 67 | 16 | 0.37 | |
| Viviparidae | 3 | 70 | 45 | 0.38 | |
| Basommatophora | Lymnaeidae | 38 | 66 | 163 | 0.86 |
| Physidae | 79 | 237 | 171 | 1.56 | |
| Planorbidae | 5 | 104 | 29 | 0.44 | |
| Oligochaeta | – | 286 | 1447 | 693 | 7.78 |
| Hirudinae | |||||
| Rhynchobdellida | Glossiphoniidae | 23 | 76 | 43 | 0.46 |
| Nematoda | – | 21 | 172 | 116 | 0.99 |
| Turbellaria | |||||
| Tricladida | Planariidae | 9 | 31 | 11 | 0.16 |
| Total | 5894 | 14363 | 10944 | 100 | |
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