How can salmon smolts be discouraged from worse passage routes through hydroelectric dams?
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Salmon smolts can be discouraged from worse passage routes through hydroelectric dams by enhancing the attractiveness and efficiency of more favorable routes. Studies have shown that factors like higher discharges and water depths at the entrance make certain routes, like Archimedes screws, more appealing to smolts . Implementing targeted turbine shutdowns during specific times, considering site-specific characteristics, can protect smolts from being drawn towards turbines, thus improving passage safety . Monitoring smolt behavior traits, such as basal locomotor activity, can help predict their migration route choices, with smolts exhibiting high activity more likely to use fish passages over turbine intakes . By focusing on improving the conditions and features of preferred migration routes and considering smolt behavior patterns, hydroelectric facilities can effectively deter smolts from choosing suboptimal passage routes.
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| Papers (5) | Insight |
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5 Citations | Salmon smolts can be discouraged from worse passage routes through hydroelectric dams by allocating more flow to fish passages, optimizing discharge levels, and controlling water flow efficiently. |
| To discourage salmon smolts from worse passage routes through hydroelectric dams, targeted turbine shutdowns and flexible approaches based on site-specific studies are recommended. | |
| Improving the attractiveness and efficiency of nature-like fishways can discourage salmon smolts from choosing worse passage routes through hydroelectric dams, enhancing safe and rapid downstream migration. | |
| Handling smolts twice in traps significantly reduces marine survival. Careful application of catch-mark-recapture methods is crucial to avoid stress and biased estimates, emphasizing the need for more knowledge in mitigation. | |
01 Jan 2022 3 Citations | Physiological stress from dam passage can discourage salmon smolts from worse routes. Passage infrastructure modifications guided by physiological studies can improve their successful passage through hydroelectric dams. |
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