@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 {6742,
	title = {Behaviour of endangered European eels in proximity to a dam during downstream migration: Novel insights using high accuracy 3D acoustic telemetry},
	journal = {Ecology of Freshwater Fish},
	volume = {29},
	year = {2019},
	pages = {266-279},
	abstract = {River infrastructures such as weirs, hydropower stations or water reservoirs represent obstructions to migration for diadromous fish. Knowledge of accurate behaviour of fish in front of such structures is required to protect migrants from hazardous areas, guide them towards safe passage or adapt structure to improve the escapement. We developed and made available a method to process acoustic telemetry data based on Time Difference Of Arrival analysis to accurately locate tagged fish. Improved accuracy allows the detection of escape routes and description of dam-crossing tactics. Sixteen tagged eels were tracked with high accuracy (1{\textendash}2\&nbsp;m) and 1 location min-1 frequency during their exploration period on reaching the dam. Two migration routes (spillways and bottom compensation flow pipe) were used by 77\% and 23\% of eels respectively. Spillways were the preferred route, but a median of 16\&nbsp;days were required to pass the dam versus 1.1\&nbsp;days via the compensation pipe. A minimal water crest of 40\&nbsp;cm was required for passage via spillways. Eels passing through the compensation pipe were exclusively nocturnal and mainly explored the bottom of the dam. Eels passing through spillways explored the whole dam area by night and day, and were not attracted to the compensation pipe entrance. With global warming, more frequent drought periods are expected, potentially leading to decreased opportunities for eels to migrate across safer dams by spillways. To conserve this endangered species, dam management strategies that account for expected hydrologic conditions and distinct exploration behaviours are needed.},
	keywords = {3D acoustic telemetry, dam, diadromous fish, downstream migration, European eel},
	doi = {10.1111/eff.12512},
	url = {https://onlinelibrary.wiley.com/doi/abs/10.1111/eff.12512},
	author = {Thomas Trancart and Alexandre Carpentier and Anthony Acou and Danet, Valentin and Elliott, Sophie and Eric Feunteun}
}
