@article {7824,
	title = {Temporary turbine and reservoir level management to improve downstream migration of juvenile salmon through a hydropower complex},
	journal = {Knowledge \& Management of Aquatic Ecosystems},
	year = {2021},
	month = {Jan-01-2021},
	pages = {4},
	abstract = {Developing management rules to improve downstream migration of salmon smolts in large hydropower plants is essential to limit mortality and migration delay. A 2-year telemetry study was conducted to assess the efficiency of temporary measures to enhance the safety and speed of juvenile salmon passage through the Pout{\`e}s dam (Allier River, France). 124 smolts were tracked through the reservoir and downstream of the dam, during implementation of turbine modulation and/or shutdown during night and reservoir level lowering. Level lowering significantly reduced median residence time from 3.4 days to 4.4 hours. However, even with high spill during turbine modulation, the risk of smolt being drawn toward the turbines was increased at low reservoir level due to the site{\textquoteright}s configuration, greater proximity to the surface and weak repulsive effect of the rack. Moreover, results revealed that a substantial proportion of smolts can migrate during daytime and twilight during floods, even at the beginning of the migration period. Thus targeted turbine shutdown has a good potential to protect smolts, but implementation requires studies taking account of site specificities and a flexible approach.},
	keywords = {Atlantic salmon, downstream migration, migratory delay, operational management, Turbine shutdown},
	doi = {10.1051/kmae/2021004},
	url = {https://www.kmae-journal.org/10.1051/kmae/2021004},
	author = {T{\'e}tard, St{\'e}phane and Roy, Romain and Teichert, Nils and Rancon, Jocelyn and Courret, Dominique}
}
@article {6736,
	title = {Resolving the trade-off between silver eel escapement and hydropower generation with simple decision rules for turbine shutdown},
	journal = {Journal of Environmental Management},
	volume = {261},
	year = {2020},
	pages = {110212},
	abstract = {Hydropower plants are commonly reported as a major cause of the worldwide decline of freshwater eels (Anguillidae), so that management solutions are urgently needed to mitigate their impacts. Where downstream passage solutions are complex to develop, turbine shutdown appears as an effective management solution to protect silver eels during their river migration toward spawning areas. However, the definition of operational decision rules for turbine shutdown is challenging due to the duality between the benefit for eel conservation and the concomitant cost in term of hydropower production. Here, we proposed a decision framework for turbine shutdown based on simple hydrological criteria to guide negotiations between stakeholders toward a trade-off between silver eel escapement and hydropower generation. Eel migration was assumed to be triggered by a minimum river flow associated with a minimum discharge pulse, so that threshold values can be directly implemented as decision rules for turbine shutdown. To estimate relevant thresholds, a generic methodological framework was developed to generate alternative decision rules from data collected at hydropower plants, which can include telemetry surveys and estimates of eel abundance. A multiple-criteria decision analysis was then conducted to rank alternatives and to determine the best compromise between promoting silver eel escapement and limiting turbine shutdown duration. Graphic outputs can help stakeholders to understand the competitive interests between eel conservation and hydropower production, while visually identifying a range of consensual alternatives to support negotiations in the choice of operational thresholds. The method was illustrated for three river systems in Europe featured by distinct hydrological conditions and can be applied in other areas, providing that eel monitoring surveys and flow data are available.},
	keywords = {Conservation policy, Decision rules, Multiple-criteria decision, Turbine shutdown},
	issn = {0301-4797},
	doi = {https://doi.org/10.1016/j.jenvman.2020.110212},
	url = {http://www.sciencedirect.com/science/article/pii/S030147972030147X},
	author = {Teichert, Nils and St{\'e}phane T{\'e}tard and Thomas Trancart and Eric Feunteun and Anthony Acou and Eric de Oliveira}
}
