Survey of the impacts of an air bubble curtain on the suction of fish and benthic invertebrates of a river water extraction.
Abstract
The extraction of river water is a serious environmental problem because of the collection of aquatic organisms. In the case of fish fry and juveniles and small fish this can lead to economic losses. By optimizing the fences and various fish repelling systems damage should be prevented or minimized. In the present case the effectiveness of a fence with an integrated air bubble curtain in the Danube Channel in a river of the barbel region is monitored. The barbel region is characterized by a high biodiversity, regarding both the fish species and the benthic invertebrates. The aim of this study is to examine the function of the air bubble curtain in terms of a reduction of the suction of organisms. Due to the seasonal development of juveniles, the focus is on the months of June, July and August. As part of the multi-week sampling both day and night aspects are studied, since many organisms have maximum activity at night.
Air bubble curtain River water extraction fish larvae Invertebrates
Publikationen
Auswirkungen eines Luftblasenvorhanges auf den Fisch- & Makrozoobenthoseinzug bei einer Flusswasserentnahme
Autoren: Friedrich, T; Graf, W; Jungwirth, M. Jahr: 2014
Forschungsbericht (extern. Auftraggeber)
Project staff
Thomas Friedrich
Dipl.-Ing. Dr. Thomas Friedrich
thomas.friedrich@boku.ac.at
Tel: +43 1 47654-81244
BOKU Project Leader
18.04.2013 - 28.02.2014