Relevant bibliographies by topics / Vertical-slot design fishway

Academic literature on the topic 'Vertical-slot design fishway'

Author: Grafiati
Published: 10 December 2022
Last updated: 19 February 2023

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Journal articles on the topic "Vertical-slot design fishway"

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Rodríguez, Álvaro, María Bermúdez, Juan R. Rabuñal, and Jerónimo Puertas. "Fish tracking in vertical slot fishways using computer vision techniques." Journal of Hydroinformatics 17, no. 2 (November 5, 2014): 275–92. http://dx.doi.org/10.2166/hydro.2014.034.

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Vertical slot fishways are hydraulic structures which allow the upstream migration of fish through obstructions in rivers. The appropriate design of these devices should take into account the behavior and biological requirements of the target fish species. However, little is known at the present time about fish behavior in these artificial conditions, which hinders the development of more effective fishway design criteria. In this work, an efficient technique to study fish trajectories and behavior in vertical slot fishways is proposed. It uses computer vision techniques to analyze images collected from a camera system and effectively track fish inside the fishway. Edge and region analysis algorithms are employed to detect fish in extreme image conditions and Kalman filtering is used to track fish along time. The proposed solution has been extensively validated through several experiments, obtaining promising results which may help to improve the design of fish passage devices.
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G. Doupé, Robert, David L. Morgan, and Howard S. Gill. "Prospects for a restorative fishery enhancement of Lake Kununurra: a high-level tropical impoundment on the Ord River, Western Australia." Pacific Conservation Biology 11, no. 2 (2005): 136. http://dx.doi.org/10.1071/pc050136.

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The high-level irrigation water supply dams of the Ord River in tropical Western Australia impede the movement of Barramundi Lates cafcarifer and other tropical fish species. A recreational Barramundi fishery enhancement of Lake Kununurra using a fishway has been widely promoted as advancing fishery conservation and the reformation of land and water management practices within the greater Ord River region. Of the fishways considered here, none have been found to admit Barramundi in the numbers and size classes necessary to establish or maintain the recreational fishery. Reasons for this include an inadequate understanding of fish behaviour and/or fishway deSign faults. The seemingly reluctant use of fishways by Barramundi might also be confounded by some observations being made on rivers where Barramundi populations are either comparatively small or non-existent. The alternative to a fishway is hatchery stocking. This option, like a dedicated Barramundi fishway, represents a single-species approach to fishery enhancement and is the least legitimate attempt to restore the ecological integrity of the fish communities of either Lake Kununurra or the Ord River. We argue that progress toward the restoration of the lake should continue, though a fishery enhancement programme that incorporates the broader fish community and not just a single species, would better rebuild the presently degraded Ord River system. Of the available options, we recommend testing an experimental model that incorporates aspects of the vertical-slot and bypass fishway designs, with the objectives being to learn migratory fish behaviour, abundance, and patterns and cues for fish movement. This approach can incorporate Barramundi as the target species to better understand entrance design constraints, minimum slot widths for larger fish, and operation under low flows during peak irrigation water demands, but still accommodate the movement of tropical fishes during these periods.
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Gilja, Gordon, Eva Ocvirk, and Robert Fliszar. "Experimental Investigation of the Reynolds Shear Stress Exceedance Rate for the Injury and Disorientation Biocriteria Boundary in the Pool-Orifice and Vertical Slot Type Fishways." Applied Sciences 11, no. 16 (August 21, 2021): 7708. http://dx.doi.org/10.3390/app11167708.

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Fragmentation of rivers has a negative impact on river’s ecological status which can be improved by the construction of fishways next to obstacles in rivers that prevent a free migration. Flow field characteristics are key factors in the design process of hydraulically efficient fishways—flow and turbulence patterns in a functional fishway allow fish to enter, progress through and exit with minimum time/energy expenditure. The aim of this paper is an experimental study of the flow field characteristics measured in the physical fishway model with the goal of providing information on the Reynold’s shear stress distribution that would facilitate their design in accordance with the environmental requirements. The focus of the research was on the nominally hydraulically efficient con-figuration pool-type fishways—pool-orifice and vertical slot. Fishway geometry was varied for bottom slope (7.5%, 10% and 12.5%), pool length (45 cm, 60 cm and 90 cm) and orifice size (8 × 8 cm, 10 × 10 cm and 12 × 12 cm) in a model scaled 1:3 to the prototype. Since Reynold’s shear stress has been identified as the main turbulent parameter affecting fish swimming performance and behavior, it is used as the basis for the analyses. The velocity data were collected with Vectrino ADV and processed in all three planes—streamwise, horizontal and vertical. Reynold’s shear stress data were analyzed according to the injury (>50 N/m2) and disorientation (>30 N/m2) biocriteria boundaries defined in the literature. The percentage of the flow field exceeding the boundaries were analyzed depending on the fishway geometry. The results obtained in this research suggest that the critical design parameter is the orifice size for the pool-orifice fishways and the pool length for the VS fishway. The Reynold’s shear stress is generally the highest in the bottom layer for pool-orifice fishways and the surface layer for vertical slot fishways.
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Sanagiotto, Daniela, Júlia Rossi, and Juan Bravo. "Applications of Computational Fluid Dynamics in The Design and Rehabilitation of Nonstandard Vertical Slot Fishways." Water 11, no. 2 (January 24, 2019): 199. http://dx.doi.org/10.3390/w11020199.

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Vertical slot fishways are increasingly common structures for the passage of a wide variety of migratory fish and contribute to the maintenance of fish diversity in fragmented rivers. These structures are designed with several geometric arrangements and, consequently, flow patterns through them can be shaped to present suitable characteristics for the fish species. To aid in the design of vertical slot fishways, a three-dimensional numerical model was used to simulate the flow for different geometric configurations. An existing vertical slot fishway with nonstandard dimensions was initially modeled and validated. This geometry was used as a reference design. Modifications to the reference design, such as the insertion of cylinders, changes in the baffle shape and position of the vertical slots, as possible rehabilitation measures, were proposed and tested. In summary, five different designs were evaluated with several slopes, totaling 17 geometries. Hydraulic parameters, flow patterns, maximum velocities, velocity fields and turbulence kinetic energy in the pools were analyzed. The results indicate that the maximum velocity values were between 9% and 68% higher than those obtained by the theoretical equation. This indicates that maximum velocities can be underestimated for nonstandard vertical slot fishways if a simplified evaluation is conducted. The insertion of cylinders in the region close to the slot reduces the maximum velocity up to 8.2%. The positioning of the vertical slots on alternating sides increases the maximum values of turbulence kinetic energy and the regions subjected to higher values. However, this configuration provided greater energy dissipation and reduction of velocities by up to 27%. Thus, modifications in nonstandard vertical slot fishways can be useful in future design or rehabilitation of existing structures in order to provide velocities and turbulence more friendly for a higher number of fish species.
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Mallen-Cooper, M. "Swimming ability of adult golden perch, Macquaria ambigua (Percichthyidae), and adult silver perch, Bidyanus bidyanus (Teraponidae), in an experimental vertical-slot fishway." Marine and Freshwater Research 45, no. 2 (1994): 191. http://dx.doi.org/10.1071/mf9940191.

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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.
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Stuart, Ivor G., Brenton P. Zampatti, and Lee J. Baumgartner. "Can a low-gradient vertical-slot fishway provide passage for a lowland river fish community?" Marine and Freshwater Research 59, no. 4 (2008): 332. http://dx.doi.org/10.1071/mf07141.

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Fishways are commonly used to restore native fish movements in regulated rivers. In the Murray-Darling Basin, Australia, 14 fishways are to be built by 2011 to improve passage along 2225 km of the river. The first of these fishways, constructed in 2003, is a vertical-slot design with low water velocities (0.98–1.4 m s–1) and turbulence (average 42 W m–3). This design was selected to provide passage for individuals between 20 and 1000 mm long. To determine passage success, trapping and a remote automated passive integrated transponder (PIT) tag reading system was used from October 2003 to February 2006. In 57 24-h samples at the exit (upstream end) and entrance (downstream end), 13 species and 30 409 fish were collected at a maximum rate of 4415 fish per day. Fish between 31 and 1030 mm successfully ascended the fishway. However, significantly smaller (<31 mm) fish and small-bodied (<50 mm) carp gudgeons (Hypseleotris spp.), a species previously considered non-migratory, were sampled downstream from the entrance of the fishway. The remote PIT tag reading system revealed that 81% of native golden perch (Macquaria ambigua) and 87% of non-native common carp (Cyprinus carpio) successfully ascended the fishway. These data will help maximise the efficiency of future fishways against a series of pre-determined performance criteria.
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Mallen-Cooper, M. "Swimming ability of juvenile Australian bass, Macquaria novemaculeata (Steindachner), and juvenile barramundi, LAtes calcarifer (Bloch), in an experimental vertical-slot fishway." Marine and Freshwater Research 43, no. 4 (1992): 823. http://dx.doi.org/10.1071/mf9920823.

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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.
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Zhang, Di, Chunming Liu, Xiaotao Shi, Yakun Liu, and Yingmin Qu. "A novel H-shape fishway with excellent hydraulic characteristics." Journal of Hydrology and Hydromechanics 71, no. 1 (February 4, 2023): 64–79. http://dx.doi.org/10.2478/johh-2022-0026.

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Abstract Fishway design not only takes into account the swimming abilities of target fishes, but also considers the hydrodynamic characteristics within the fishway. In this study, the flow fields of one vertical-slot fishway (i.e. VSF), five T-shape fishways (i.e. TSF-1~TSF-5) and two H-shape fishways (i.e. HSF-1 and HSF-2) are numerically simulated by solving the three-dimensional Reynolds-averaged Navier-Stokes equations and the K-Omega-SST turbulence model. The numerical results clearly indicate that the hydrodynamic properties of HSF-2 are overall superior to the remaining seven cases, in terms of the time-averaged flow pattern, the time-averaged velocity magnitude, the depth-mean time-averaged velocity magnitude along the vertical-slot section, the volume percentages of the time-averaged velocity magnitude less than some critical values, and the distribution of the time-averaged turbulent kinetic energy. Therefore, HSF-2 is more friendly for fishes with relatively smaller sizes and weaker swimming capacities to transfer upstream. The novel HSF-2 is firstly proposed in this paper, and it is naturally designed during the process of improving the flow regime. Furthermore, the generalizability of the superiority of HSF-2 over VSF and the original T-shape fishway (i.e. TSF-1) has been exhibited with the aid of the numerical results of four operating conditions (i.e. Q = 400 L/s, 600 L/s, 800 L/s and 1000 L/s).
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Romão, Filipe, Ana L. Quaresma, José M. Santos, Paulo Branco, and António N. Pinheiro. "Cyprinid passage performance in an experimental multislot fishway across distinct seasons." Marine and Freshwater Research 70, no. 6 (2019): 881. http://dx.doi.org/10.1071/mf18232.

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New engineering solutions are required to minimise the effects of an increasing number of anthropogenic barriers on watercourses. Longitudinal connectivity must be provided through fishways to allow free passage for the whole fish community. Recently, a multislot fishway (MSF) was developed, with two consecutive vertical slots that divide the overall head drop by two, thus reducing the flow velocity, the magnitude of turbulence and operational discharge compared with a standard vertical slot fishway (VSF) with similar pool and slot dimensions. The present study assessed the effectiveness of a MSF design for two cyprinid species with different ecological traits, under laboratory conditions, namely the Iberian barbel (Luciobarbus bocagei), a large-bodied potamodromous benthic fish, and the southern Iberian chub (Squalius pyrenaicus), a small-bodied water column fish. Experiments were conducted in a full-scale experimental fishway, in spring and autumn. Results showed differences in passage performance between seasons and species. During spring, chub had a higher entry efficiency and shorter transit time to fully negotiate the fishway, whereas no seasonal differences were found for the barbel. Overall, the MSF could be considered a cost-effective design for cyprinids with different ecological traits because it offers lower operational costs than a standard VSF. However, concerns about the entrance and attraction conditions should be addressed. In addition, because of the lower operational discharge, the propensity for obstruction with woody debris and sediments should not be disregarded.
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Guo, Zhuo Min, Gao Zhu, Yu Jing Bie, and Meng Jun Tang. "Influence of Hydraulic Factor of Vertical-Slot Fishway on Swimming Ability of Fish." Advanced Materials Research 594-597 (November 2012): 1988–92. http://dx.doi.org/10.4028/www.scientific.net/amr.594-597.1988.

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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.
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Dissertations / Theses on the topic "Vertical-slot design fishway"

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Kamula, R. (Riitta). "Flow over weirs with application to fish passage facilities." Doctoral thesis, University of Oulu, 2001. http://urn.fi/urn:isbn:9514259777.

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Abstract Fishways are hydraulic structures designed to dissipate the energy of flowing water in order to decrease water velocities and increase water depths. The history of fishways is long, the first written remarks date back to the 17th century. Fishway hydraulics, however, have been intensively studied only starting since the 1980's. Fishways have been classified into three main categories according to their hydraulic characteristics: pool-and-weir, vertical slot, and Denil fishways. Fishways are hydraulically complex structures, and thus designing tools for different fishway types have been developed. In this report, a new designing procedure has been established, and equations for each main fishway type have been suggested. In addition, flow conditions below different fishway types have been examined, and velocity distributions at weirs with V-shaped crests in both pool-and-weir fishways and at a single weir have been compared in different discharges and drops. Fishway flows have been compared with flows over single weirs.
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(2930712), Ivor G. Stuart. "Assessment of a vertical-slot fishway for non-salmonid fish at a tidal barrier on the sub-tropical Fitzroy River, Queensland." Thesis, 1999. https://figshare.com/articles/thesis/Assessment_of_a_vertical-slot_fishway_for_non-salmonid_fish_at_a_tidal_barrier_on_the_sub-tropical_Fitzroy_River_Queensland/20459520.

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 Fishways designed for salmonids in temperate rivers have often been successful, but similar fishways provided for non-salmonid species in tropical and sub- tropical rivers have frequently failed. In 1970 a salmonid style fishway was built on a tidal barrage on the sub -tropical Fitzroy River, in Queensland, north-eastern Australia. Despite modifications to the design in 1987 assessment of the fishway in 1978 and 1992 demonstrated that it was ineffective; particularly as few barramundi (Lates calcarifer [Centropomidae]) were found at the top of the fishway. The inadequacy of the design appeared to be related to very high water velocities and turbulence within the fishway pools. Consequently, since construction of the tidal barrage many catadromous fish populations (species that live in freshwater but breed in saltwater) have declined in the freshwater reaches of the Fitzroy River. 

In 1994 the fishway was modified to a vertical -slot design. The study reported in this thesis is an assessment of the effectiveness of the new design from 1995 to 1997. In 38 paired samples taken at the top and bottom of the fishway, over 16 months, 29 fish species and over 23,000 fish were collected at a maximum rate of 3,400 per day. At the top of the fishway 15,471 individuals were collected and 7594 at the bottom. The migratory population consisted of 4 marine species, 9 diadtomous species and 16 potamodromous species. Common species using the fishway included blue -catfish (Arius graeffei [Ariidae]), bony herring (Nematalosa erebi [Clupeidae]), striped mullet (Mugil cephalus [Mugilidae]), barramundi, and long -finned eels (Anguilla reinhardtii [Anguillidae]). Shrimp  Macrobrachium australiense [Palaemonidae]), juvenile crabs (Varuna litterata [Grapsidae]) and long -finned elvers did not ascend the full length of the fishway and specific fishways for these species are recommended. Fish between 25 and 640 mm in length ascended the fishway, although the passage of smaller size classes of immature fish was restricted which may be important for the sustainability of these migratory populations. The bulk of the biomass (71% at the top and 66% at the bottom) was made up of the diadromous blue -catfish of which 81 % were immature. Furthermore, a number of other common fish species were represented mostly by juveniles, including striped mullet, bony herring and barramundi. 

This study is the first record of barramundi successfully migrating through an in situ fishway in that no significant difference was found between the size of fish at the top and bottom. A major finding was that 95% of the barramundi from the fishway were immature fish (200-640 mm long), but significantly larger barramundi (maximum length 980 mm) were captured by angling near the base of the fishway. Nevertheless, enlargement of vertical -slot width from 0.15 m to 0.45 m only encouraged a small number of larger fish (890 mm maximum length) to enter. Interestingly, very small barramundi (45-163 mm long) were also absent from the fishway, but these were found in a small tidal tributary below the barrage. Very young barramundi appear to inhabit specific off - channel habitat before migrating in the main river at a larger size. The implications of these results are that 150 mm slot widths are suitable for barramundi and that different life stages have different migratory requirements.   

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Book chapters on the topic "Vertical-slot design fishway"

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Peter, Armin, Nils Schoelzel, Lisa Wilmsmeier, Ismail Albayrak, Francisco Javier Bravo-Córdoba, Ana García-Vega, Juan Francisco Fuentes-Pérez, et al. "The Attractiveness of Fishways and Bypass Facilities." In Novel Developments for Sustainable Hydropower, 61–81. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-99138-8_5.

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AbstractThis chapter deals with the conventional upstream fish passage technologies developed for a safe fish migration at run-of-river hydropower plants (HPPs). It covers the factors influencing successful migration, current status, practices and challenges, novel developments, recommendations and outlook. Main focusses of this chapter are on the attractiveness of fishways and bypass facilities based on FIThydro study results. Although upstream fish passage technologies are well developed, there are still research gaps on their effectiveness related to their attractiveness and passabilities. FIThydro fills such research gaps by providing tools, methods, devices and best practice examples. This chapter covers the field studies at the case study HPP Guma with pool and weir fishway in Spain and Schiffmühle with vertical-slot and nature-like fishways in Switzerland and a combination of field, laboratory and numerical simulation studies of vertical-slot fishway in France. The results of these three studies contribute to better fishway design for a range of fish species and hydraulic conditions.
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Rodriguez, Alvaro, Angel Jose Rico-Diaz, Juan R. Rabuñal, and Marcos Gestal. "Fish Tracking with Computer Vision Techniques." In Advances in Computational Intelligence and Robotics, 74–104. IGI Global, 2017. http://dx.doi.org/10.4018/978-1-5225-0889-2.ch003.

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Vertical slot fishways are hydraulic structures which allow the upstream migration of fish through obstructions in rivers. Their design depends on the interplay between hydraulic and biological variables to match the requirements of the fish species for which they are intended. However, current mechanisms to study fish behavior in fishway models are impractical or unduly affect the animal behavior. In this chapter, we propose a new procedure for measuring fish behavior in fishways using Computer Vision (CV) techniques to analyze images obtained from the assays by means of a camera system designed for fishway integration. It is expected that this technique will provide detailed information about the fish behavior and will help to improve fish passage devices. A series of assays have been performed in order to validate this new approach in a full-scale fishway model and with living fishes. We have obtained very promising results that allow reconstructing correctly the movements of the fish within the fishway without disturbing fish.
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"Experimental and numerical evaluation of sixteen different designs of vertical slot fishways." In Environmental Hydraulics, Two Volume Set, 1143–48. CRC Press, 2010. http://dx.doi.org/10.1201/b10553-194.

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Conference papers on the topic "Vertical-slot design fishway"

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Branco, Paulo, Ana Margarida Mascarenhas, Gonçalo Duarte, Filipe Romão, Susana Dias Amaral, Maria Teresa Ferreira, António Pinheiro, and José Maria Santos. "Meta-analyzing Vertical slot fishways: what is the best design?" In Proceedings of the 39th IAHR World Congress From Snow to Sea. Spain: International Association for Hydro-Environment Engineering and Research (IAHR), 2022. http://dx.doi.org/10.3850/iahr-39wc252171192022980.

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