Performance of fish lift recently built at the Touvedo Dam on the Lima River, Portugal
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Published source details
Santos J.M., Ferreira M.T., Godinho F.N. & Bochechas J. (2002) Performance of fish lift recently built at the Touvedo Dam on the Lima River, Portugal. Journal of Applied Ichthyology, 18, 118-123.
Published source details Santos J.M., Ferreira M.T., Godinho F.N. & Bochechas J. (2002) Performance of fish lift recently built at the Touvedo Dam on the Lima River, Portugal. Journal of Applied Ichthyology, 18, 118-123.
Actions
This study is summarised as evidence for the following.
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Install fish elevators/lifts Action Link |
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Install fish elevators/lifts
A study in 1998–1999 in a river in Viana do Castelo District, Portugal (Santos et al. 2002) found that a fish lift at a dam was used by some European eels Anguilla anguilla to travel upstream, and a similar number used it during the day and night. Over a 12-month period, the fish lift was used by eels from May to October (total 121 eels). Most eels used the lift in July (102 eels). The average number of eels using the lift each time it was lifted did not differ significantly during the day (0.01–1.2 eels/lift/month) or night (0.02–0.5 eels/lift/month). The fish lift was built for upstream migration past a dam built in 1992. Three entrances in a channel within the tailrace of a powerhouse led to a cage in the fish lift. Two automatic video cameras, one on top and one outside of the lift, were used to monitor the fish lift for a 12-month period from March 1998–February 1999. The cage was lifted in 4-h cycles and an image captured once every cycle.
(Summarised by: Vanessa Cutts)
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