Table 3
Temperature and flow index (i.e. river flow the day before the capture divided by the average annual flow) values (median, minimum and maximum values) per species having at least 3 individuals captured, at the Bewinne (FW1-B), the Amblève (FW2-A) and the Ourthe (FW3-O) rivers.
| Temperature (°C) | Flow index | |||||
|---|---|---|---|---|---|---|
| Species | FW1–B | FW2–A | FW3-O | FW1-B | FW2-A | FW3-O |
| Median (Min.–Max.) | Median (Min.–Max.) | Median (Min.–Max.) | Median (Min.–Max.) | Median (Min.–Max.) | Median (Min.–Max.) | |
| Trout | 10.0 (4.5–23.3) | 10.3 (1.4–25.9) | 11.0 (6.9–18.3) | 0.82 (0.14–7.99) | 0.60 (0.10–6.89) | 0.40 (0.13–3.37) |
| Sea trout | – | – | 16.2 (9.5–24.1) | – | – | 0.27 (0.13–0.47) |
| Rainbow trout | 12.0 (9.7–16.6) | 14.3 (3.3–25.9) | 10.4 (5.6–19.8) | 0.50 (0.14–4.61) | 0.33 (0.10–2.86) | 0.38 (0.30–2.07) |
| Brook trout | – | 14.2 (12.6–16.5) | – | – | 0.24 (0.23–0.46) | – |
| Barbel | 12.6 (12.6–19.5) | 17.0 (6.4–25.9) | 14.4 (7.8–20.4) | 1.33 (0.26–1.38) | 0.33 (0.10–2.36) | 0.40 (0.14–1.55) |
| Chub | 17.4 ( 11.4–23.3) | 18.7 (6.6–20.9) | 15.3 (8.1–24.1) | 0.57 (0.14–4.39) | 0.30 (0.11–3.73) | 0.39 (0.13–1.20) |
| Nase | – | 10.5 (7.3–18.0) | 10.2 (7.5–17.6) | – | 1.24 (0.21–2.20) | 1.08 (0.13–1.55) |
| Spirlin | 17.9 (11.9–23.3) | 20.9 (8.1–25.9) | 18.0 (16.0–25.6) | 0.37 (0.11–2.44) | 0.16 (0.09–1.68) | 0.15 (0.14–0.79) |
| Dace | – | 18.0 (5.8–23.4) | – | – | 0.21 (0.12–3.73) | – |
| Grayling | – | 8.9 (2.6–25.9) | 7.9 (7.5–25.6) | – | 0.46 (0.11–2.40) | 0.44 (0.14–0.79) |
| Loach | – | 13.9 (7.8–20.1) | – | – | 0.32 (0.16–1.37) | – |
| Bullhead | – | 13.0 (5.8–13.9) | – | – | 1.21 (0.26–3.46) | – |
| Common bleak | – | – | 17.6 (17.6–17.6) | – | – | 0.22 (0.22–0.22) |
| Bream | – | – | 14.8 (8.4–20.4) | – | – | 0.37 (0.16–1.08) |
| Silver bream | – | – | 16.7 (12.7–24.1) | – | – | 0.30 (0.13–0.37) |
| Roach | 16.0 (14.3–16.0) | 14.4 (8.4–25.9) | 10.5 (7.4–18.3) | 0.95 (0.29–1.21) | 0.22 (0.11–1.32) | 0.45 (0.19–1.53) |
| Gudgeon | 19.3 (15.7–20.5) | 16.3 (4.6–25.9) | – | 0.26 (0.22–0.45) | 0.31 (0.09–1.74) | – |
| Minnow | 22.1 (12.8–23.3) | 25.8 (11.5–25.9) | – | 0.37 (0.11–1.27) | 0.17 ( 0.15–1.75) | – |
| Eel | 14.3 (10.0–20.5) | – | – | 1.22 (0.45–4.37) | – | – |
| Stickleback | 13.7 (12.0–16.3) | 7.4 (7.3–18.1) | – | 0.47 (0.25–1.27) | 2.03 (0.31–2.20) | – |
| European catfish | – | – | 18.9 (14.9–20.7) | – | – | 0.35 (0.17–0.49) |
| Pike | – | – | 10.2 (7.9–11.9) | – | – | 0.70 (0.39–1.20) |
| Tench | – | – | 16.4 (12.0–19.1) | – | – | 0.28 (0.25–0.40) |
| Common carp | – | – | 19.2 (15.4–22.8) | – | – | 0.35 (0.16–0.77) |
| Perch | – | 14.3 (11.5–25.9) | – | – | 0.47 (0.28–1.62) | – |
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