Effectiveness of the electric fish fence as a behavioural barrier at a pumping station

Leonhard Egg, Joachim Pander, Melanie Mueller, Juergen Geist

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

Dyke-based pumping stations have been linked with high fish mortalities during pumping events. Behavioural barriers like electric fish fences have been proposed as a promising solution to prevent entrainment of fish into pumps. In order to test the effectiveness of such barriers, the intake of a pumping station was equipped with a new generation electric fish fence while fish behaviour was observed with an adaptive resolution imaging sonar (ARIS) during non-electrified (reference) and electrified (treatment) operation modes. This study revealed the functionality of the fish fence as a behavioural barrier, with a fish turning rate of up to 72% at a mean water temperature of 4.3°C and a mean current velocity of 0.05 m s-1. These field results suggest that new-generation electric fish fences may be a promising solution to reduce the effects of pumping stations on fish.

Original languageEnglish
Pages (from-to)1459-1464
Number of pages6
JournalMarine and Freshwater Research
Volume70
Issue number10
DOIs
StatePublished - 2019

Keywords

  • ARIS
  • adaptive resolution imaging sonar
  • fish monitoring
  • fish passage
  • fish protection device
  • flood protection

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