Eel brood leader
An eel (brut) manager , also Aalgang , Aaltreppe or Aalleiter called, is a fishway , which specifically address the needs of Aalen is aligned. Such an ascent aid enables the young eels ( glass eels , eel brood), which migrate upstream in the spring at night , to advance against strong currents and thus to bypass waterfalls and weirs .
An eel ladder usually consists of a channel or tube in which the flow is slowed down by built-in cross bars, stones, brushwood or plastic bristles so that the small eels can swim against it. At the lower end, the ladder is expanded like a funnel.
literature
- Beate Adam, Ulrich Schwevers, Jacques Boubée, Antoine Legault: The renaissance of the eel ladder . In: Fischer & Teichwirt 8/2007 .
Individual evidence
- ^ A b Heinz Patt, Peter Gonsowski, Daniel Vischer, Andreas Huber: Hydraulic engineering: Basics, design of hydraulic structures and systems . Springer, 2011, ISBN 3-642-11963-8 .
- ↑ Eel brood leader . In: Brockhaus Konversations-Lexikon 1894–1896, 1st volume, p. 8.