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Fishway with two entrance branches: Understanding its performance for potamodromous Mediterranean barbels

Fishway with two entrance branches: Understanding its performance for potamodromous Mediterranean barbels

Authors :
L. Fernandes Celestino
Sergio Makrakis
Jorge Ruiz-Legazpi
Francisco Javier Sanz-Ronda
F.J. Bravo-Cordoba
Source :
Fisheries Management and Ecology. 25:12-21
Publication Year :
2017
Publisher :
Wiley, 2017.

Abstract

Many fish passes have been built across the world in recent years. This study analyses the performance of a modified type of pool and weir fishway with two access branches, using passive integrated transponder telemetry. A circumā€Mediterranean barbel, Luciobarbus bocagei (Steindachner, 1864), was chosen as the target species. Both hydraulic values (flow and volumetric energy dissipation) and biological parameters (attraction, entrance and passage success) were measured in the fishway, these being related to the environmental variables affecting upstream fish movement. Flow discharge, water temperature and atmospheric pressure were important for fish entering the fishway. There was no preference between path routes, even though the main discharge was concentrated in the turbine channel. This type of fishway design could be an alternative for the conservation of fish populations where multiple fish approach options are possible.

Details

ISSN :
0969997X
Volume :
25
Database :
OpenAIRE
Journal :
Fisheries Management and Ecology
Accession number :
edsair.doi...........d66416c48ee7777e0d9baf85ee641ea5
Full Text :
https://doi.org/10.1111/fme.12260