Comparing fishway designs for application in a large tropical river system

Baumgartner, Lee J.; Boys, Craig A.; Marsden, Tim; McPherson, Jarrod; Ning, Nathan; Phonekhampheng, Oudom; Robinson, Wayne; Singhanouvong, Douangkham; Stuart, Ivor G.; Thorncraft, Garry

doi:10.1016/j.ecoleng.2018.05.027

Cited by 19 publications

(15 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The risk of sustaining any possible effects associated with the trap location treatment order in each experiment was alleviated by randomising the order of the trap location treatments for each block independently, making it reasonable to analyse the ANOVA error terms as independent [27]. Furthermore, the randomised block designs of both the day and dusk/night experiments removed the risk of temporal confounding between treatments for each experiment [11,16,28].…”

Section: Discussionmentioning

confidence: 99%

“…Unfortunately, these fishways typically failed, owing to inherent differences in the movement ecology of temperate salmonid fishes and tropical non-salmonid species [9,10]. In the last 20 years, there has been a shift towards the use of low-turbulence vertical slot fishways, which operate over a broad hydrological range [6,7,11]. Such fishways have had reasonable success in improving fish passage in tropical rivers (e.g., the Mekong River in South East Asia [6,11]) and coastal subtropical rivers (e.g., the Burnett River in Australia [8]).…”

Section: Introductionmentioning

confidence: 99%

“…In the last 20 years, there has been a shift towards the use of low-turbulence vertical slot fishways, which operate over a broad hydrological range [6,7,11]. Such fishways have had reasonable success in improving fish passage in tropical rivers (e.g., the Mekong River in South East Asia [6,11]) and coastal subtropical rivers (e.g., the Burnett River in Australia [8]). However, with increasing water scarcity, vertical slot fishways, like many pool-and-weir type fishways (e.g., submerged orifice designs), may unintentionally drain headwater pools if their slots/orifices are below the minimum headwater level [12].…”

Section: Introductionmentioning

confidence: 99%

“…The cone fishway design may therefore be particularly applicable to tropical rivers-like the Mekong-which have diverse communities of potamodromous species and are located in highly populated developing countries [6,11,16]. However, because of the newness of the cone fishway design, its effectiveness has so far only been initially evaluated in three Australian rivers (one tropical, one subtropical and one temperate), and these assessments focused on the effectiveness of the cone fishway in facilitating longitudinal passage of small-bodied diadromous species, since that was the initial intent of the fishway's design [15].…”

Section: Introductionmentioning

confidence: 99%

“…This study investigated the effectiveness of the new concrete cone fishway for facilitating lateral migrations of tropical river-floodplain fish communities in the LMB in Lao PDR. Assessments were conducted during both the day and dusk/night to consider the potential influence of differences in diurnal migration patterns, since previous studies have suggested that such differences may be an inherent aspect of the ecology of many tropical river-floodplain fish communities [7,11]. We hypothesised that the installation of the cone fishway would significantly enhance lateral fish migration from the Mekong River into an upstream wetland system during both the day and dusk/night.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

A Cone Fishway Facilitates Lateral Migrations of Tropical River-Floodplain Fish Communities

Baumgartner¹,

Boys²,

Marsden³

et al. 2020

Water

Self Cite

View full text Add to dashboard Cite

Fisheries in many tropical river-floodplain systems are under threat from physical obstructions caused by ongoing river infrastructure development. There is a growing need for innovative, cost-effective technologies to mitigate the impacts of these obstructions. This study examined the effectiveness of a new cone fishway for facilitating lateral migrations of river-floodplain fish communities in the Lower Mekong Basin in Lao PDR. We assessed the species richness, size range, abundance and biomass of fish able to pass through a cone fishway, using paired entrance and exit sampling during both dawn/day and dusk/night. Overall, a diverse range of taxa (76 species) and size classes (25–370 mm) ascended the cone fishway. The total size range of fishes observed at the fishway entrance was similar to that at the exit, although the fish at the entrance were significantly smaller (in length) than those at the exit, during both diel periods. Additionally, there were significantly higher abundances of fish at the entrance than at the exit, but there was no difference in total biomass, again for both periods. These results suggest that, with further development, the cone fishway design has considerable potential for facilitating the lateral migrations of diverse tropical river-floodplain fish communities at low/medium head infrastructure.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

A Cone Fishway Facilitates Lateral Migrations of Tropical River-Floodplain Fish Communities

Baumgartner¹,

Boys²,

Marsden³

et al. 2020

Water

Self Cite

View full text Add to dashboard Cite

show abstract

Turbulent structural analysis of the combined fishway with vertical seam and bottom hole

Shen,

Chen,

Shi

et al. 2024

River Research & Apps

View full text Add to dashboard Cite

The three‐dimensional flow velocities within the typical pool chamber of the rectangular fishway were measured in a vertical slit bottom‐hole combination fishway by a hydraulic model test using an acoustic Doppler velocimeter (ADV). This was aimed to analyze the effect of eddy structures within the pool chamber of the fishway on fish migration. Based on this, a numerical simulation study was conducted using the Reynolds mean model (RNG k‐ε) and large eddy simulation (LES). Additionally, the omega (Ω) eddy identification method was used to identify the eddy structure within the pool chamber of the fishway and dissect the flow characteristics of the water body within the pool chamber. The findings revealed that longitudinal flow velocity dominated the flow in the lower bottom layer of the pond. Moreover, the flow in the middle and upper layers was more turbulent and there is a phenomenon of backflow upstream, and the flow at the orifice was a divergent jet with the main flow slightly to the right bank, forming two vortices in opposite directions on both sides of the orifice. The fish passage mainly displayed the turbulent vortex structure, which can effectively slow down the water flow and provide a resting place for migratory fish. The vortex identification method can more accurately identify the vortex structure inside the flow field.

show abstract

Managing water gate operation and fish passage facilities in irrigated systems of the Nam Kam River, Thailand

Hanpongkittikul,

Cowx,

Ngoichansri

et al. 2024

River Research & Apps

View full text Add to dashboard Cite

The migration of fishes through the Thoranit Naruemit water gate on the Nam Kam River, a tributary of the Mekong River in Thailand, was studied to understand the hydrological factors and improve the operational regime of the fish pass at the structure. Migration of fish from the Mekong River started in May, at the onset of the rainy season. During 60 days of operation, the fish pass supported the upstream migration of 83 species and ~440,000 fish, equivalent to about 11 tonnes of fish. The fish pass supported migration of a range of fish sizes between 45 and 700 mm, and most fish were larger than the size of first maturity for the species in question. The factors influencing migration into the Nam Kam included the lunar cycle, flow in the fish pass, water level in the river and flow variability. Migration tended to increase in the 3–4‐day period before or after a full moon. Discharge and water level changes associated with rising water levels in the Mekong River synchronize with the spawning season of most Mekong fish and trigger upstream migration. Many fish migrated through the pass at discharges through sluice gates between 8 and 323 m3/s and with a flow through the fish pass between 0.95 and 3.08 m/s. Restrictions to fish migration were found and recommendations for water gate and fish pass operation are provided.

show abstract

Comparing fishway designs for application in a large tropical river system

Cited by 19 publications

References 31 publications

A Cone Fishway Facilitates Lateral Migrations of Tropical River-Floodplain Fish Communities

A Cone Fishway Facilitates Lateral Migrations of Tropical River-Floodplain Fish Communities

Turbulent structural analysis of the combined fishway with vertical seam and bottom hole

Managing water gate operation and fish passage facilities in irrigated systems of the Nam Kam River, Thailand

Contact Info

Product

Resources

About