Preliminary Data on Borland Fish Passes Efficiency for Non-Salmonids in Two Portuguese Large Rivers

• Main Author: Bochechas, J
• Format: Text
• Language: unknown
• Published: ScholarWorks@UMass Amherst 1995
• Subjects: migration; fish passage; Alosa alosa; Anguilla; Anguilla anguilla; design; monitoring; video; water level; entrance; attraction; Borland; Lever
• Online Access: https://scholarworks.umass.edu/fishpassage_conference_proceedings/307

Six Borland fish passes were built since 1970 on dams in the rivers Douro and Tejo. Although fish passes have been built, fish migrations are still obstructed and the loss of fish passage is important in both rivers. The migratory species such as Alosa alosa, A. fallax, Petromyzon marinus, and Angui...