Open Access
Table 1
Mean density, density range and percentage of occurrence of Pyrenean sculpin Cottus hispaniolensis in the sampling sites during the period 2001–2016. Information of sampling sites subjected to flow regulation is also included.
| River | Code | Regulated | N | Occurrence (%) | Mean density ± SD (ind. ha−1) | Range (ind. ha−1) |
|---|---|---|---|---|---|---|
| Garonne | 1 | No | 5 | 83 | 167.8 ± 167.4 | 0–416.7 |
| Garonne | 2 | Yes | 5 | 67 | 41.9 ± 57.1 | 0–138.9 |
| Garonne | 3 | Yes | 5 | 100 | 130.8 ± 111.6 | 24.4–258.1 |
| Garonne | 4 | Yes | 5 | 67 | 49.3 ± 57.3 | 0–133.3 |
| Garonne | 5 | Yes | 5 | 67 | 49.1 ± 54.7 | 0–111.1 |
| Garonne | 6 | Yes | 5 | 33 | 8.9 ± 19.9 | 0–44.4 |
| Garonne | 7 | Yes | 4 | 60 | 14.9 ± 27.1 | 0–55.6 |
| Ruda | 8 | No | 5 | 0 | – | – |
| Unhola | 9 | No | 5 | 0 | – | – |
| Aiguamòg | 10 | No | 4 | 60 | 64.4 ± 106.5 | 0–222.2 |
| Valarties | 11 | No | 5 | 0 | – | – |
| Nere | 12 | No | 4 | 60 | 107.8 ± 135.5 | 0–281.1 |
| Varradòs | 13 | No | 5 | 100 | 288.5 ± 146.2 | 121.0–500.0 |
| Joeu | 14 | No | 5 | 83 | 306.1 ± 388.1 | 0–925.9 |
| Toran | 15 | Yes | 5 | 0 | – | – |
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