Passage Performance of Technical Pool-Type Fishways for Potamodromous Cyprinids: Novel Experiences in Semiarid Environments
Abstract
:1. Introduction
2. Materials and Methods
2.1. Study Area and Experimental Sites
2.2. Fish Capture, Tagging, and Handling
2.3. Trials
2.4. Data Analysis
2.4.1. Ascent Analysis
2.4.2. Motivation Analysis
3. Results
3.1. Ascent Analysis
3.2. Motivation Analysis
4. Discussion
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
References
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Variables | VS | SNBO |
---|---|---|
Pool dimension (length × width) | 2.10 m × 1.60 m | 2.40 m × 1.60 m |
Slope | 6.52% | 7.31% |
Number of pools between A1 and A4 | 11 | 8 |
Width of the slot/notch 1 | 0.23 m (0.20–0.23) | 0.32 m (0.31–0.36) |
Height of the notch sill 1 | NA | 0.49 m (0.45–0.52) |
Bottom orifice size (length × width) | NA | 0.20 m × 0.25 m |
Drop between pools 1 | 0.15 m (0.14–0.19) | 0.19 m (0.13–0.24) |
Mean water depth 1 | 0.91 m | 0.99 m |
Flow discharge 2 | 0.29 m3/s | 0.31 m3/s |
Volumetric Energy Dissipation | 118 W/m3 (110–149) | 148 W/m3 (102–181) |
Water velocity at the slot/notch 3 | 1.38 m/s (1.10–1.47) | 1.24 m/s (0.80–1.36) |
Water velocity at the orifice 3 | NA | 1.72 m/s (1.42–1.93) |
Fish Group | Species | N | Length (cm) | Weight (g) | K | |||
---|---|---|---|---|---|---|---|---|
Mean ± SD | Range | Mean ± SD | Range | Mean ± SD | Range | |||
VS1 | Barbel | 36 | 20.0 ± 4.2 | 11.2–28.2 | 133 ± 72 | 21–298 | 1.51 ± 0.17 | 1.24–2.18 |
Nase | 23 | 15.6 ± 1.7 | 13.5–20.0 | 44 ± 18 | 26–92 | 1.11 ± 0.11 | 0.95–1.34 | |
VS2 | Barbel | 29 | 19.9.0 ± 3.3 | 15.6–27.9 | 127 ± 66 | 56–322 | 1.49 ± 0.10 | 1.23–1.73 |
Nase | 21 | 15.0 ± 1.6 | 12.8–19.6 | 40 ± 17 | 25–99 | 1.14 ± 0.12 | 0.96–1.42 | |
SNBO1 | Barbel 1 | 21 | 17.9 ± 8.9 | 11.5–43.7 | 166 ± 344 | 24–1326 | 1.55 ± 0.14 | 1.26–1.83 |
Nase 1 | 10 | 14.8 ± 2.8 | 11.6–19.6 | 39 ± 24 | 19–85 | 1.12 ± 0.08 | 0.98–1.22 | |
SNBO2 | Barbel 1 | 18 | 15.3 ± 2.2 | 11.8–20.0 | 56± 27 | 28–130 | 1.49 ± 0.11 | 1.32–1.77 |
Nase 1 | 7 | 14.0 ± 3.3 | 11.0–20.5 | 35 ± 29 | 16–99 | 1.13 ± 0.18 | 0.92–1.45 |
Metrics | VS (N = 110) | SNBO (N = 56) | ||
---|---|---|---|---|
Barbel | Nase | Barbel | Nase | |
Attempt percentage | (58/66) 87.9% | (39/44) 88.6% | (30/39) 76.9% | (8/17) 47.1% |
Median number of attempts | 3 (1–16) | 5 (1–12) | 2 (1–6) | 3 (1–6) |
Ascent success | (55/58) 94.9% | (38/39) 94.8% | (24/30) 80.0% | (7/8) 87.5% |
Median transit time 1 | (54) 12.5 min | (37) 8.0 min | (19) 26.3 min | (6) 9.3 min |
Median transit time per meter of height | 6.9 min/m (1.3–274.5) | 4.4 min/m (1.2–342.7) | 16.6 min/m (4.6–405.3) | 5.2 min/m (2.1–34.4) |
Barbel | VS | SNBO | ||||
Parameters | Coefficient | SE | p | Coefficient | SE | p |
Intercept (μ) | 3.4601 | 0.5425 | <0.001 | 3.3816 | 0.3209 | <0.001 |
Length (β) | −0.0784 | 0.0268 | 0.0034 | −0.0350 | 0.0155 | 0.0239 |
Shape (σ) | 0.4236 | 0.0487 | 0.3657 | 0.0725 | ||
Nase | VS | SNBO | ||||
Parameters | Coefficient | SE | p-value | Coefficient | SE | p-value |
Intercept (μ) | 1.6243 | 1.7664 | 0.3578 | 5.4887 | 1.6238 | <0.001 |
Length (β) | −0.0028 | 0.1161 | 0.9809 | −0.2365 | 0.0979 | 0.0157 |
Shape (σ) | 0.6001 | 0.0882 | 0.3033 | 0.1063 |
Parameters | Pre-Attempt Rate | Rest of Attempts Rate | ||||
---|---|---|---|---|---|---|
β ± SE | p-Value | HR | β ± SE | p-Value | HR | |
Fishway | −0.951 ± 0.189 | <0.001 | 0.386 | −0.599 ± 0.149 | <0.001 | 0.549 |
Species | 0.595 | 0.124 |
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Sanz-Ronda, F.J.; Bravo-Córdoba, F.J.; Sánchez-Pérez, A.; García-Vega, A.; Valbuena-Castro, J.; Fernandes-Celestino, L.; Torralva, M.; Oliva-Paterna, F.J. Passage Performance of Technical Pool-Type Fishways for Potamodromous Cyprinids: Novel Experiences in Semiarid Environments. Water 2019, 11, 2362. https://doi.org/10.3390/w11112362
Sanz-Ronda FJ, Bravo-Córdoba FJ, Sánchez-Pérez A, García-Vega A, Valbuena-Castro J, Fernandes-Celestino L, Torralva M, Oliva-Paterna FJ. Passage Performance of Technical Pool-Type Fishways for Potamodromous Cyprinids: Novel Experiences in Semiarid Environments. Water. 2019; 11(11):2362. https://doi.org/10.3390/w11112362
Chicago/Turabian StyleSanz-Ronda, Francisco Javier, Francisco Javier Bravo-Córdoba, Ana Sánchez-Pérez, Ana García-Vega, Jorge Valbuena-Castro, Leandro Fernandes-Celestino, Mar Torralva, and Francisco José Oliva-Paterna. 2019. "Passage Performance of Technical Pool-Type Fishways for Potamodromous Cyprinids: Novel Experiences in Semiarid Environments" Water 11, no. 11: 2362. https://doi.org/10.3390/w11112362