RT info:eu-repo/semantics/article
T1 Brown trout upstream passage performance for a fishway with water drops between pools beyond fish passage design recommendations
A1 Bravo Córdoba, Francisco Javier
A1 Fuentes Pérez, Juan Francisco
A1 García Vega, Ana
A1 Peñas, Francisco Jesús
A1 Barquín, José
A1 Sanz Ronda, Francisco Javier
K1 Freshwater fishes - Migration
K1 Peces de agua dulce
K1 Aquatic ecology
K1 Ecología de los cursos de agua
K1 Freshwater & Marine Ecology
K1 Ecología del agua dulce
K1 Brown trout
K1 Truchas
K1 Acuicultura
K1 Step-pool fishway
K1 Canales para peces de presa de piscina
K1 3102 Ingeniería Agrícola
AB This work aims to assess brown trout (Salmo trutta) passage through a free-flow pool-weir-type fishway with hydrodynamic notches and extreme water drops between pools. It consists of an old-school fishway design, commonly constructed in salmon rivers of Spain during the period of 1950–1980. To assess their performance, a field test was designed with confined trial conditions during the spawning migratory season. The mean water drop between pools was 0.65 m and the total water height considered for the trial was 11.8 m. The monitoring was carried out using PIT telemetry. The initial hypothesis, considering the fishway design and assessment guidelines, classified this structure as hardly insurmountable. Results showed an ascent success of 19% with a median transit time of 29.1 min/m of ascended height. Larger fish and fishway sections with lower values of volumetric power dissipation were related to a better performance in the passage. The results suggest that in certain circumstances, such as limited construction areas where other design or management options are difficult to implement (e.g., canyons), this type of fishway may be an alternative for the upstream passage of at least a small proportion of the brown trout population, although a selection effect is expected.
PB MDPI
SN 2073-4441
YR 2022
FD 2022
LK https://uvadoc.uva.es/handle/10324/61208
UL https://uvadoc.uva.es/handle/10324/61208
LA eng
NO Water, 2022, Vol. 14, Nº. 17, 2750
NO Producción Científica
DS UVaDOC
RD 29-may-2024