Experimental studies on hydropeaking – stranding and drift of juvenile grayling and brown trout
Abstract
Hydropeaking is defined as short-term flow fluctuations caused by hydro-power plant operation. It consists of a "surge", an artificially increased runoff, and the "sunk" as the subsequent decline of runoff, sometimes several times a day. Hydropeaking is a powerful intervention in the natural flow dynamics of a water body and is associated with hydrological pressures. Above a certain intensity affected by hydropeaking, the ecological functioning of a water body is decreasing significantly. Both the release of flushing water and the strong water level fluctuations have a significant impact on fish and benthic organisms in the water and the nearby environment. The aim of this project therefore is a deeper understanding of causal relationships by observing the reaction of juvenile grayling (Thymallus thymallus) and brown trout (Salmo trutta fario) to hydropeaking effects under controlled conditions.
hydro peaking hydro power fish ecological status stranding drift
Publikationen
Experimentelle Untersuchungen zur Schwallproblematik - Drift und Stranden von Äschen und Bachforellen während der ersten Lebensstadien
Autoren: Auer, S; Fohler. N; Zeiringer, B; Führer, S; Jahr: 2014
Forschungsbericht (extern. Auftraggeber)
Project staff
Stefan Schmutz
Univ.Prof. Dipl.-Ing. Dr.nat.techn. Stefan Schmutz
stefan.schmutz@boku.ac.at
Tel: +43 1 47654-81202
Project Leader
01.02.2013 - 31.05.2014
Bernhard Zeiringer
Dipl.-Ing. Bernhard Zeiringer
bernhard.zeiringer@boku.ac.at
Tel: +43 1 47654-81215
Project Staff
01.02.2013 - 31.05.2014