Survival and Behavioral Effects of Exposure to a Hydrokinetic Turbine on Juvenile Atlantic Salmon and Adult American Shad

• Published in: Estuaries and coasts 2015-01, Vol.38 (Suppl 1), p.S203-S214
• Main Authors: Castro-Santos, Theodore, Haro, Alex
• Format: Article
• Language: English
• Subjects: Ascent; Behavioural responses; Coastal Sciences; Downstream effects; Duration; Earth and Environmental Science; Ecology; Environment; Environmental Management; Exposure; Fish; Flumes; Freshwater & Marine Ecology; Freshwater fishes; Marine; Marine fishes; Renewable Ocean Energy Development and the Environment; Salmo salar; Salmon; Survival; Swimming; Turbine engines; Turbines; Water and Health; Wounds
• ISSN: 1559-2723; 1559-2731
• DOI: 10.1007/s12237-013-9680-6

This paper describes a series of experiments designed to measure the effect of exposure to a full-scale, vertical axis hydrokinetic turbine on downstream migrating juvenile Atlantic salmon (N=175) and upstream migrating adult American shad (N=208). Controlled studies were performed in a large-scale, open-channel flume, and all individuals approached the turbine under volitional control. No injuries were observed, and there was no measurable increase in mortality associated with turbine passage. Exposure to the turbine elicited behavioral responses from both species, however, with salmon passing primarily over the downrunning blades. Shad movement was impeded by the device, as indicated by fewer attempts of shorter duration and reduced distance of ascent up the flume. More work should be performed in both laboratory and field conditions to determine to what extent these effects are likely to influence free-swimming fish.