Table 7. Fish species detected by eDNA metabarcoding in 2014 within the impoundment (IM1 and IM2 samples) and at the R0 site (downstream from the dam, three filtrations).
| Fish taxa | IM—Impoundment | R0—Tier River | ||||
|---|---|---|---|---|---|---|
| Latin name | Common name | IM1 | IM2 | R0a | R0b | R0c |
| Perca fluviatilis | Perch | 158105 | 97188 | 383 | 106 | 639 |
| Rutilus rutilus | Roach | 58107 | 39628 | 23037 | 19855 | 84578 |
| Esox lucius | Pike | 30101 | 36902 | 30 | 91 | |
| Lepomis gibbosus | Pumpkinseed | 16362 | 37991 | 75 | 23 | 217 |
| Squalius cephalus | Chub | 15944 | 35406 | 39 | 308 | 113 |
| Coregonus lavaretus | Lavaret | 23371 | 328 | 11 | 24 | |
| Cyprinus carpio | Carp | 7753 | 14064 | 38 | ||
| Tinca tinca | Tench | 4515 | 17184 | |||
| Scardinius erythrophthalmus | Rudd | 4264 | 11726 | 14 | 27 | |
| Leuciscus spp. | - | 5738 | 7772 | 126 | 77 | 299 |
| Salaria fluviatilis | Freshwater blenny | 3887 | 1027 | 80 | 30 | 230 |
| Gobio spp. | - | 4430 | 205 | 11 | 67 | 67 |
| Alburnus alburnus | Bleak | 379 | 2218 | |||
| Abramis brama | Bream | 1134 | 147 | 21 | ||
| Salmo trutta | Trout | 168 | 142 | 38 | ||
| Carassius spp. | - | 32 | ||||
| SG1* | - | 60 | 2568 | 218 | ||
| Barbus barbus | Barbel | 1563 | ||||
| Alburnoides bipunctatus | Spirlin | 935 | ||||
| Barbatula sp. | - | 143 | ||||
| Cottus spp. | - | 37 | ||||
| Lampetra spp. | - | 33 | ||||
| Oncorhynchus mykiss | Rainbow trout | 17 | ||||
| Phoxinus phoxinus | Minnow | 15 | ||||
| Total richness | 16 | 21 | ||||
Number of reads per species and per filtration.
*The molecular marker does not discriminate between Telestes souffia, Chondrostoma nasus and Chondrostoma toxostoma.