Fish-ecological monitoring at the hydrodynamic screw “HYDROCONNECT” with “Albrecht fishLift inside” at the Sulm River in Styria
Abstract
Freshwater fish depend on a complex system of differing habitats since a variety of life-history-demands need to be fulfilled. Migrations are undertaken for spawning, food uptake, dispersion, or colonization. Dams and weirs constructed for hydroelectric power generation or river regulation can block or delay upstream fish migration and thus contribute to the decline and even the extinction of species that depend on longitudinal movements. Mortality rates resulting from fish passage through hydraulic turbines or over spillways during their downstream migration can be significant. While significant knowledge and practical experience for the planning and design of measures to ensure upstream migration of different fish species is available, effective measures for downstream migration still need further development. ‘HYDROCONNECT, a newly developed Archimedean double screw concept with low rotation frequency and therefore insignificant shear forces or pressure changes combines hydroelectric power generation and bi-directional fish passage in a single device. Fish migration is monitored at the double screw at the river Sulm (low land river in Styria) to demonstrate the operational capability for upstream and downstream migration.
keywords fish-ecological monitoring Fish migration Fish pass
Publikationen
Fischökologische Funktionskontrolle der Wasserkraftschnecke mit integriertem Fischaufstieg am Standort KW Retznei an der Sulm
Autoren: Pinter, K; Sidak, R Jahr: 2017
Forschungsbericht (extern. Auftraggeber)
Project staff
Bernhard Zeiringer
Dipl.-Ing. Bernhard Zeiringer
bernhard.zeiringer@boku.ac.at
Tel: +43 1 47654-81215
Project Leader
21.04.2015 - 31.12.2016
Kurt Pinter
DDipl.Ing. Dr. Kurt Pinter
kurt.pinter@boku.ac.at
Tel: +43 1 47654-81235
Sub Projectleader
21.04.2015 - 31.12.2016
Günther Unfer
Dipl.-Ing. Dr.nat.techn. Günther Unfer
guenther.unfer@boku.ac.at
Tel: +43 1 47654-81213
Sub Projectleader
21.04.2015 - 31.12.2016
Thomas Friedrich
Dipl.-Ing. Dr. Thomas Friedrich
thomas.friedrich@boku.ac.at
Tel: +43 1 47654-81244
Project Staff
21.04.2015 - 31.12.2016
Simon Führer
Dipl.-Ing. Simon Führer B.Sc.
simon.fuehrer@boku.ac.at
Tel: +43 1 47654-81241
Project Staff
21.04.2015 - 31.12.2016