RT info:eu-repo/semantics/article
T1 Fish upstream passage through gauging stations: experiences with Iberian barbel in Flat-V Weirs
A1 Sanz Ronda, Francisco Javier
A1 Bravo Córdoba, Francisco Javier
A1 García Vega, Ana
A1 Valbuena Castro, Jorge
A1 Martínez de Azagra Paredes, Andrés Manuel
A1 Fuentes Pérez, Juan Francisco
K1 Fishes
K1 Fishes - Exercise
K1 Peces
K1 Peces - España
K1 Peces de Agua dulce - España
K1 Barbos
K1 Ecología de los cursos de agua
K1 Gauging weirs
K1 Impact
K1 Swimming performance
K1 Hydraulic barriers
K1 3105 Peces y Fauna Silvestre
AB The monitoring of river discharge is vital for the correct management of water resources. Flat-V gauging weirs are facilities used worldwide for measuring discharge. These structures consist of a small weir with a triangular cross-section and a flat “V”-shaped notch. Their extensive use is a consequence of their utility in the measurement of both low and high flow conditions. However, depending on their size, local morphology and river discharge can act as full or partial hydraulic barriers to fish migration. To address this concern, the present work studies fish passage performance over flat-V weirs considering their hydraulic performance. For this, radio-tracking and video-monitoring observations were combined with computational fluid dynamics (CFD) models in two flat-V weirs, using Iberian barbel (Luciobarbus bocagei) as the target species. Results showed that fish passage is conditioned by both hydraulic and behavioral processes, providing evidence for scenarios in which flat-V weirs may act as full or partial barriers to upstream movements. For the studied flat-V weirs, a discharge range of 0.27–8 m3/s, with a water drop difference between upstream and downstream water levels lower than 0.7 m and a depth downstream of the weir of higher than 0.3 m can be considered an effective passage situation for barbels. These findings are of interest for quantifying flat-V weir impacts, for engineering applications and for establishing managing or retrofitting actions when required.
PB MDPI
SN 2410-3888
YR 2021
FD 2021
LK https://uvadoc.uva.es/handle/10324/59072
UL https://uvadoc.uva.es/handle/10324/59072
LA eng
NO Fishes, 2021, Vol. 6, Nº. 4, 81
NO Producción Científica
DS UVaDOC
RD 18-nov-2024