Swimming ability of adult golden perch, Macquaria ambigua (Percichthyidae), and adult silver perch, Bidyanus bidyanus (Teraponidae), in an experimental vertical-slot fishway

1994 ◽  
Vol 45 (2) ◽  
pp. 191 ◽  
Author(s):  
M Mallen-Cooper
Keyword(s):  
Fork Length ◽  
River System ◽  
Swimming Ability ◽  
Confidence Limits ◽  
Learning Trial ◽  
Adult Fish ◽  
Vertical Slot ◽  
Maximum Water ◽  
Repeated Use ◽  
Vertical Slot Fishway

The swimming abilities of adult golden perch, Macquaria ambigua (Richardson) (Percichthyidae) (441�16 mm, mean total length+s.d.), and adult silver perch, Bidyanus bidyanus (Mitchell) (Teraponidae) (258 �10 mm, mean fork length � s.d.), were tested in an experimental vertical-slot fishway. These two Australian species are potamodromous, and the adult fish move upstream large distances. Golden perch readily used the vertical-slot fishway, and a 20-min NV90 (the maximum water velocity that 90% of the fish in a sample can negotiate in 20 min) of 1.83 m s-1 (95% confidence limits 1.43-2.03 m s-1) is recommended for fishway design in the Murray-Darling river system. This velocity equates to a 171-mm step height between fishway pools and should be applied to a minimum pool size of 3 m (length) by 2 m (width) to avoid excessive turbulence. Lower velocities and larger pools might be necessary for long fishways or where there are large migrations of fish. Some silver perch used the fishway, but the results for this species were inconclusive. Fish were re-used at different velocities during the experiment, and a learning trial indicated that the number of fish negotiating the fishway increased with repeated use of the fish.

Swimming ability of juvenile Australian bass, Macquaria novemaculeata (Steindachner), and juvenile barramundi, LAtes calcarifer (Bloch), in an experimental vertical-slot fishway

1992 ◽  
Vol 43 (4) ◽  
pp. 823 ◽  
Author(s):  
M Mallen-Cooper
Keyword(s):  
Juvenile Fish ◽  
Fork Length ◽  
Maximum Velocity ◽  
Water Velocity ◽  
Swimming Ability ◽  
Probit Regression ◽  
Vertical Slot ◽  
In The Wild ◽  
Vertical Slot Fishway ◽  
Coefficient Of Discharge

Australian bass, Macquaria novemaculeata, and barramundi, Lates calcarlfer, are catadromous fish that spawn in estuaries and the juveniles migrate upstream into fresh water. Lowland fishways in the range of these species therefore need to accommodate these juvenile fish. The swimming abilities of three size classes (fork length (LCF) + s.d.: 40 * 3 mm, 64 + 5 mm and 93 + 8 mm) of juvenile Australian bass and one size class (43 4 mm total length) of juvenile barramundi were tested in an experimental vertical-slot fishway. Water velocity was calculated from the head loss in water level between adjacent pools in the fishway, using a coefficient of discharge (Cd) of 1.0. Both species readily negotiated the fishway at low water velocities, indicating that the fish were in a migratory mode and that these fish could use the vertical-slot design of the fishway. The sigmoidal decrease in this ability with increasing water velocity was described by a probit regression. The NV95 value (maximum negotiable water velocity for 95% of the sample) is suggested as the suitable maximum-velocity criterion for vertical-slot fishways for these fishes. The NV95 values were 0.66 m s-1 for 43-mm barramundi, 1.02 m s-1 for 40-mm bass, 1.40 m s-1 for 64-mm bass and 1.84 m s-1 for 93-mm bass. The NV95 for barramundi is probably an underestimate of their swimming ability in the wild because the water temperature was low for this species. Up to 20% of the 93-mm bass died at test velocities greater than 2.0 m s-1, but there were no mortalities of other fish during or immediately following a trial. The results indicate that water velocity in fishways for juvenile bass and barramundi should not exceed 1.4 m s-1 in a cell size of 1.5 m length and 1.0 m width. The relative swimming speeds (body lengths per second) of bass in the fishway are higher than other estimates of burst swimming speeds of juvenile fish obtained from studies in flumes. This indicates that data from the latter type of study should not be used to determine water velocities for fishways.

Influence of Hydraulic Factor of Vertical-Slot Fishway on Swimming Ability of Fish

2012 ◽  
Vol 594-597 ◽  
pp. 1988-1992
Author(s):  
Zhuo Min Guo ◽  
Gao Zhu ◽  
Yu Jing Bie ◽  
Meng Jun Tang
Keyword(s):  
Water Depth ◽  
Research Method ◽  
Turbulent Energy ◽  
Swimming Ability ◽  
Hydraulic Characteristics ◽  
Fish Swimming ◽  
Vertical Slot ◽  
Dissipation Mechanism ◽  
Influence Of Water ◽  
Vertical Slot Fishway

Vertical-slot fishway is widely used in different shape of fish-way due to the adaptability to water level amplitude, the hydraulic characteristics of the vertical-slot fish-way of different scale has been extensively researched by researcher domestic and overseas, the energy dissipation mechanism and hydraulic characteristics of the fish-way in different scale under different inflow has been acquainted now. In this paper, the hydraulic characteristics of Vertical-slot fish-way of different size under water depth, inflow and slope is analyzed , influence of water depth, flow velocity, dissipation rating per unit volume and turbulent energy etc. On fish swimming ability is discussed, and design of fish-way is evaluated by relevant hydraulic factor of fish swimming characteristics. Finally the research method and experience abroad is summarized in the paper.

Analysis of fishways in the Middle and Lower Jinsha River Basin (China)

2021 ◽  
Author(s):  
Siqi Tong ◽  
Silke Wieprecht ◽  
Martin Schletterer
Keyword(s):  
River Basin ◽  
Jinsha River ◽  
Vertical Slot ◽  
Upper Yangtze River ◽  
Artificial Breeding ◽  
Longitudinal Connectivity ◽  
Target Fish ◽  
Regional Sustainable Development ◽  
Vertical Slot Fishway ◽  
Hydropower Stations

<p>This study was carried out in the middle and lower reaches of the Jinsha River in southwest China, which represents the upper Yangtze River. Hydraulic structures (14 cascade hydropower stations) are planned and/or constructed in this system, which is considered as largest hydropower base. We aim to summarize appropriate measures to restore the riverine continuum in the middle and lower reaches of the Jinsha River, where high-head cascade hydropower dams are located or planned.</p><p>We distributed a questionnaire to Chinese researchers in the related fields (scientists, hydropower operators and NGOs in China, n = 60). According to the responses, fishways, fish lift, fish lock, trap-and-truck system as well as fish hatcheries (artificial breeding) are recognized to ensure passing respectively preserving fish in the Jinsha River basin.</p><p>A longitudinal connectivity assessment of the study area revealed a severely disturbed continuity status. Based on the biological analyses of the demands of the target fish species and review of fish pass technologies, a vertical-slot fishway is proposed.</p><p>Considering the dam heights and the geographical conditions, it is recommended to combine the vertical-slot fishway with these alternatives to achieve a higher efficiency in passing fish as well as to recover the river continuity towards regional sustainable development.</p>

scholarly journals A new Eulerian–Lagrangian agent method to model fish paths in a vertical slot fishway

2016 ◽  
Vol 88 ◽  
pp. 217-225 ◽  
Author(s):  
Zhu Gao ◽  
Helge I. Andersson ◽  
Huichao Dai ◽  
Fengjian Jiang ◽  
Lihao Zhao
Keyword(s):  
Vertical Slot ◽  
Vertical Slot Fishway ◽  
Model Fish

DO THE FISH LIKE THE FLOW PATTERN IN THE VERTICAL SLOT FISHWAY?

2019 ◽  
Author(s):  
GUANGNING LI ◽  
SHUANGKE SUN ◽  
HAITAO LIU ◽  
TIEGANG ZHENG
Keyword(s):  
Flow Pattern ◽  
Vertical Slot ◽  
Vertical Slot Fishway

scholarly journals A Numerical Study of Fluid Flow in a Vertical Slot Fishway with the Smoothed Particle Hydrodynamics Method

Water ◽  
2019 ◽  
Vol 11 (9) ◽  
pp. 1928 ◽  
Author(s):  
Gorazd Novak ◽  
Angelantonio Tafuni ◽  
José M. Domínguez ◽  
Matjaž Četina ◽  
Dušan Žagar
Keyword(s):  
Smoothed Particle Hydrodynamics ◽  
Numerical Study ◽  
Free Surface Flows ◽  
Open Boundary ◽  
Doppler Velocity ◽  
Vertical Slot ◽  
Particle Hydrodynamics ◽  
Smoothed Particle ◽  
Smoothed Particle Hydrodynamics Method ◽  
Vertical Slot Fishway

Fishways have a great ecological importance as they help mitigate the interruptions of fish migration routes. In the present work, the novel DualSPHysics v4.4 solver, based on the smoothed particle hydrodynamics method (SPH), has been applied to perform three-dimensional (3-D) simulations of water flow in a vertical slot fishway (VSF). The model has been successfully calibrated against published field data of flow velocities that were measured with acoustic Doppler velocity probes. A state-of-the-art algorithm for the treatment of open boundary conditions using buffer layers has been applied to accurately reproduce discharges, water elevations, and average velocity profiles (longitudinal and transverse velocities) within the observed pool of the VSF. Results herein indicate that DualSPHysics can be an accurate tool for modeling turbulent subcritical free surface flows similar to those that occur in VSF. A novel relation between the number of fluid particles and the artificial viscosity coefficient has been formulated with a simple logarithmic fit.

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