Effectiveness of a multi-slot vertical slot fishway versus a standard vertical slot fishway for potamodromous cyprinids

Romão, Filipe; Branco, Paulo; Quaresma, Ana L.; Amaral, Stephen V.; Pinheiro, António N.

doi:10.1007/s10750-018-3580-5

Cited by 33 publications

(38 citation statements)

References 51 publications

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“…The proximity of these two swirls generated an area with higher TKE and RSS, precisely in the vicinity of slot 2. Fish passage results show a significantly higher number of movements that occurred in the MSF, relative to the VSF [93]. However, despite a higher overall magnitude of hydraulic parameters, mean velocity (U), TKE, and horizontal RSS in the VSF, no differences were found in the entrance time, entry efficiency, and in the number of successes between both types of facilities.…”

Section: Vertical Slot Fishways (Vsf)mentioning

confidence: 88%

“…In both configurations, the hydraulic head drop between pools, ∆H, was 0.16 m. The MSF presented a twofold number of slots compared with the standard VSF; thus, although in the MSF the ∆H was also 0.16 m, this head drop was divided into two becoming approximately 0.08 m per slot. Comparing both configurations in terms of hydraulic parameters-mean velocity (U), TKE, and RSS-revealed that VSF presented higher overall magnitudes than the MSF design ( Figure 2 in Romão et al [93]). Indeed, flow velocity reached a maximum of 1.9 m·s −1 in the VSF and 1.4 m·s −1 in the MSF, both in the vicinity of the slots (i.e., slots 1 and 2 in the VSF and slots 1-4 in the MSF).…”

Section: Vertical Slot Fishways (Vsf)mentioning

confidence: 99%

“…The remaining studies (n = 7, 87.5%) were all conducted under laboratory conditions, with the VSF having been tested for slopes ranging from 7.5% to 8.5%, with either 6 (n = 5, 71.4% [69,76,[93][94][95]) or 11 (n = 2, 28.6% [80,90]) pools (1.85 m-1.9 m × 1.0 m-1.5 m), separated by 10-and 27-cm wide slots, respectively. Of these lab studies, two (28.6%) [93,95] employed a variant of VSF, the multi-slot fishway (MSF [97]), featuring two consecutive slots per pool. With regard to the flow conditions, all studies employed a uniform flow, whereas non-uniformity was only tested in one of the cases [76].…”

Section: Overview Of Conditions Testedmentioning

confidence: 99%

“…The performance of the selected VSF model was then compared with the one of VSF with two slots, the multi-structure vertical-slot fishway (MSF), which considers two consecutive vertical slots separated by a local widening between each pool [93]. The VSF and MSF were tested with the same mean water depth in the pool, slot width, and pool width and length.…”

Section: Vertical Slot Fishways (Vsf)mentioning

confidence: 99%

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Pool-Type Fishway Design for a Potamodromous Cyprinid in the Iberian Peninsula: The Iberian Barbel—Synthesis and Future Directions

et al. 2020

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The Iberian barbel (Luciobarbus bocagei) is one of the most common cyprinids in the Iberian Peninsula, whose migratory routes are often hampered by anthropogenic barriers. Fishways might be an effective mitigation measure if they integrate designed operational characteristics that account for the biomechanical requirements of this species. Understanding the flow conditions inside the fishway, and how barbel responds to the hydrodynamics of the flow is imperative to improve free migratory routes with minimum energetic cost associated. Herein, we analyze and synthesize the main findings of research on pool-type fishways for upstream passage of the Iberian barbel and derive recommendations of design criteria for pool-type fishways for this species and others of similar biomechanics capacities. Ultimately, we identify research needs to improve upstream passage of this species.

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Section: Vertical Slot Fishways (Vsf)mentioning

confidence: 88%

Section: Vertical Slot Fishways (Vsf)mentioning

confidence: 99%

Section: Overview Of Conditions Testedmentioning

confidence: 99%

Section: Vertical Slot Fishways (Vsf)mentioning

confidence: 99%

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Pool-Type Fishway Design for a Potamodromous Cyprinid in the Iberian Peninsula: The Iberian Barbel—Synthesis and Future Directions

et al. 2020

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“…Additionally, numerical modelling was performed to characterize the hydrodynamics of all the configurations tested, using the computational fluid dynamics (CFD) commercial software FLOW-3D ® . Iberian barbel was selected as the target species, since it is considered representative of a few species of medium-sized benthic potamodromous cyprinids commonly present in Iberian and Western European rivers [22,38,39]. It was expected that: (i) passage performance of fish, considering attraction as well as successful upstream movements, will be influenced by both factors Q and RD; (ii) attraction efficiency would increase with increasing Q, and with RD that provide higher velocity magnitudes; and (iii) successful passages, and consequently passage efficiency, would decrease with increasing Q and with RD presenting high turbulence and high velocity magnitude.…”

mentioning

confidence: 99%

Assessment of Retrofitted Ramped Weirs to Improve Passage of Potamodromous Fish

Amaral

Quaresma

Branco

et al. 2019

Water

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The addition of substrates to small instream obstacles, like low-head ramped weirs, has been considered a useful management solution to retrofit those structures and enhance fish passage. Substrate dimensions and spatial arrangement, together with discharge, and consequently water depths, appear as important factors for the creation of hydrodynamic conditions that may facilitate the successful passage of fish, though related studies are scarce to support decision-making. This study assessed the influence of discharge (Q) and different retrofitting designs (RD) on the upstream passage performance of a potamodromous cyprinid, the Iberian barbel (Luciobarbus bocagei). Different substrates (small boulders, large boulders, cobbles) and spatial arrangements (aligned, offset) were tested. Numerical modelling was performed to characterize the hydrodynamics. Results indicate that Q and RD influenced the upstream negotiation of ramped weirs. Cobbles randomly distributed along the ramp (Nature design) was the most successful configuration, recording the highest number of upstream passages. Low velocities along the ramp, and low turbulence downstream, were registered in this configuration, indicating that the use of natural substrate may help to increase the permeability of ramped weirs to fish movements. The outcomes from this work can help engineers and biologists to design more appropriate passage structures for low-head instream obstacles.2 of 18 after assessment, could not be removed, have undergone rehabilitation works to include ramps in their designs (e.g., [11,12]). This design reconfiguration enables water to pass over the ramp, not generating a waterfall [5,10], a condition that may afford a more holistic negotiation by fish [5,13]. Nevertheless, fish swimming abilities, which are closely related to fish guilds and body size [14][15][16][17], and hydrodynamic conditions, such as water depth, discharge, and turbulence present over the ramp and in the vicinity of the structure [5,[18][19][20], are key factors that influence the permeability of such structures to fish movements.The addition of substrates to instream obstacles and fish transposition devices, commonly referred to as retrofitting, has been considered a useful management solution to enhance upstream fish passage [5,[21][22][23][24][25][26][27][28]. The placement of substrates in culverts to mimic natural stream conditions and facilitate fish passage has been successfully implemented since the early 1970s [29]. In low-head ramped weirs, natural substrates like pebbles, cobbles, or boulders, are frequently used as retrofitting solutions to increase the bed roughness, and consequently promote energy dissipation, creating localized zones of low-velocity and turbulence [23][24][25]30] that may be used by fish as resting areas during the upstream negotiation of ramps [20,27,[31][32][33]. These low velocities may be especially important to species of weaker swimming capabilities, such as potamodromous cyprinids [5,21,22]. Substrate dimensions and spatial arrang...

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Design, construction, and preliminary hydraulic evaluation of a model rock ramp fishway

Swarr

Fitzpatrick

Myrick

2023

N American J Fish Manag

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ObjectiveNew fish passage structures are frequently designed using information gained from existing structures, particularly those that have been shown to allow passage of the target species. However, this process rarely involves a preinstallation design and testing phase. Developing an apparatus that allows rapid and relatively low‐cost testing of potential fish passage structure designs prior to field installations could reduce the reliance on a “build it, monitor it, does it work?” approach.MethodsTo meet this need, we developed an indoor research flume at Colorado State University’s Foothills Fisheries Laboratory that housed a full‐scale experimental rock ramp fishway.ResultThe slope of the flume can be adjusted (0–10%) and integrates a set of four PIT tag antennas to allow fine‐resolution tracking of fish movements in the fishway. The flume can deliver variable flows (up to 0.082 m3/s) of 9–25°C water. Lessons learned during the design, construction, and initial operation of the flume are presented here.ConclusionThe basic system could be adapted for similar studies in other regions and provides a robust and flexible infrastructure that could be modified for other evaluations of instream structures in lotic systems.

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Effectiveness of a multi-slot vertical slot fishway versus a standard vertical slot fishway for potamodromous cyprinids

Cited by 33 publications

References 51 publications

Pool-Type Fishway Design for a Potamodromous Cyprinid in the Iberian Peninsula: The Iberian Barbel—Synthesis and Future Directions

Pool-Type Fishway Design for a Potamodromous Cyprinid in the Iberian Peninsula: The Iberian Barbel—Synthesis and Future Directions

Assessment of Retrofitted Ramped Weirs to Improve Passage of Potamodromous Fish

Design, construction, and preliminary hydraulic evaluation of a model rock ramp fishway

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