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Letteratura scientifica selezionata sul tema "Fishways"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 29 luglio 2024

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Articoli di riviste sul tema "Fishways"

Gilja, Gordon, Eva Ocvirk e 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, n. 16 (21 agosto 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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Yu, Fei, Jia Yuan Wang e Li Quan Xie. "Hydrodynamic Characteristics in Ecological Arc-Shaped Baffle Fishway". Applied Mechanics and Materials 212-213 (ottobre 2012): 1119–22. http://dx.doi.org/10.4028/www.scientific.net/amm.212-213.1119.

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Fishways are hydraulic structures allowing fishes upstream migration through engineering constructions in the rivers. The Denil type has a wide application and the main components are flat baffles. In this paper, we present a new type of baffle (arc-shaped baffle) to ameliorate the hydrodynamic characteristics in the fishway. The main improvement of arc-shaped baffle fishway is the alteration that the flat baffles are replaced by arc-baffles. In order to investigate the influence of water flow on migratory fish in the arc-baffle fishway, model tests were conducted. Based on the experimental results, the conclusion can be reached that hydrodynamic characteristics in arc-shaped baffle fishways are steadier than that in traditional Denil fishways, which makes fishes ascend easily.

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Schwalme, Karl, William C. Mackay e Dieter Lindner. "Suitability of Vertical Slot and Denil Fishways for Passing North-Temperate, Nonsalmonid Fish". Canadian Journal of Fisheries and Aquatic Sciences 42, n. 11 (1 novembre 1985): 1815–22. http://dx.doi.org/10.1139/f85-227.

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A vertical slot fishway and two Denil fishways (of 10 and 20% slope) built into a weir on the Lesser Slave River (55°18′N, 115°45′W) were studied from May 12 to June 25, 1984, to determine how effectively these designs pass north-temperate, nonsalmonid fishes. Thousands of spottail shiner (Notropis hudsonius), substantial numbers (> 100) of northern pike (Esox lucius), longnose sucker (Catostomus catostomus), white sucker (Catostomus commersoni), immature yellow perch (Perca flavescens), and lesser numbers of burbot (Lota lota), adult yellow perch, lake whitefish (Coregonus clupeaformis), and trout-perch (Percopsis omiscomaycus) ascended the fishways. Walleye (Stizostedion vitreum) and goldeye (Hiodon alosoides), although probably moving extensively through the river, did not use the fishways. Although high water levels allowed most fish to surmount the weir, of those that chose the fishway, pike strongly preferred to ascend the Denil fishways and the two sucker species preferred to ascend the vertical slot. Therefore, a combination of several different fishways may be required for the most efficient passage of a wide variety of species. Plasma glucose and lactate measurements on pike revealed that ascending the Denil fishways was only moderately stressful for these fish.

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Baumgartner, Lee J., Craig A. Boys, Ivor G. Stuart e Brenton P. Zampatti. "Evaluating migratory fish behaviour and fishway performance: testing a combined assessment methodology". Australian Journal of Zoology 58, n. 3 (2010): 154. http://dx.doi.org/10.1071/zo10035.

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To provide passage for migratory native fish, a series of 14 vertical-slot and lock fishways are being constructed on the Murray River in south-eastern Australia. Three of these vertical-slot fishways, at Locks 7, 9 and 10, have a conservative slope (1V : 32H) and are designed with internal hydraulics suitable for the passage of a broad size range of fish (30–1000 mm long). An assessment of these fishways was performed using a combined trapping survey and passive integrated transponder (PIT) approach to determine fishway effectiveness at passing an entire fish community. Fish were trapped within the three fishways between 2004 and 2006, where a total of 13 626 individuals comprising 13 species were collected from 48 sample days (24 h each). Trapping data revealed that the three fishways successfully passed fish within the target size range, though significantly greater numbers of individuals smaller (10–29 mm long) than the target size range could not ascend. PIT tagging revealed important information on fishway ascent times, descent times, seasonality and diel behaviour of medium and large fish. Although each method alone had advantages and disadvantages, the dual assessment approach was useful as it permitted an assessment of fishway success and also provided insights into migratory fish behaviour.

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Rajaratnam, N., C. Katopodis e A. Mainali. "Pool-orifice and pool-orifice-weir fishways". Canadian Journal of Civil Engineering 16, n. 5 (1 ottobre 1989): 774–77. http://dx.doi.org/10.1139/l89-112.

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This technical note presents a method of analyzing the flow in pool-orifice fishways by dividing it into vertical slot and submerged orifice flow regimes. For a pool-orifice-weir fishway, with flow through the orifice as well as over the weir, a method has been suggested for predicting the total flow rate in the fishway. Experimental observations are presented in support of these methods. Key words: open-channel flow, hydraulics, fishways, turbulent flow.

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Zheng, Tiegang, Zhipan Niu, Shuangke Sun, Jiayue Shi, Haitao Liu e Guangning Li. "Comparative Study on the Hydraulic Characteristics of Nature-Like Fishways". Water 12, n. 4 (27 marzo 2020): 955. http://dx.doi.org/10.3390/w12040955.

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Due to the complex structure and the multiformity of boulder arrangements, there is currently no perfect design criterion for nature-like fishways. This paper proposes four types of nature-like fishways arranged with an impermeable partition wall (IPW), a semi-permeable partition wall (SPPW) or a fully permeable partition wall (FPPW). The hydraulic characteristics of these fishways were investigated experimentally. The results show that the discharge of the fishway arranged with a FPPW was almost twice that of an IPW fishway, and the discharge of a SPPW fishway was between the two extremes. The mean flow velocity of the FPPW fishway was larger than that of the other schemes. For the fishway arranged with an IPW, the flow information was basically consistent with that of the engineered technical fishway. In the FPPW or SPPW fishway, there was more abundant flow information and no obvious recirculation zones in the fishway pool, and these conditions are suitable for migratory fish moving up- and downstream. Notably, for the fishway arranged with two fish passages, two mainstreams were formed in the pool, which divided the flow pattern of the pool into three flow regions. A weak recirculation area was formed in the low-velocity region, which facilitates swimming for migratory fish. According to this comprehensive comparative study, the SPPW fishway with two fish passages had low discharge, abundant flow information and favorable fish migration characteristics; thus, it is the optimal fishway scheme among those studied in this paper.

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Bravo-Córdoba, Francisco Javier, Juan Francisco Fuentes-Pérez, Jorge Valbuena-Castro, Andrés Martínez de Azagra-Paredes e Francisco Javier Sanz-Ronda. "Turning Pools in Stepped Fishways: Biological Assessment via Fish Response and CFD Models". Water 13, n. 9 (25 aprile 2021): 1186. http://dx.doi.org/10.3390/w13091186.

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With the aim of building more compact fishways and adapting them to field conditions to improve their location by fish, it is common to use turning pools, reducing the longitudinal development of the construction. However, depending on their design, turning pools may affect the hydraulic performance of the fishway and consequently the fish passage. To study these phenomena, turning pools in a vertical slot and in different configurations of submerged notches with bottom orifice fishway types were assessed. Both types of fishways were studied using numerical 3D models via OpenFOAM, a computational fluid dynamics software, in combination with fish responses, assessed with PIT (Passive Integrated Transponder) tag telemetry for three different species of potamodromous cyprinids in several fishways. Results show differences between the hydrodynamics of straight and turning pools, with lower values in the hydrodynamic variables in turning pools. Regarding fish behavior, the ascent was slower in turning pools but with no effect on passage success and without being a problem for fish migration. This information validates the use of turning pools as a key design component for fishways for studied species.

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Castro-Santos, Theodore, Xiaotao Shi e Alex Haro. "Migratory behavior of adult sea lamprey and cumulative passage performance through four fishways". Canadian Journal of Fisheries and Aquatic Sciences 74, n. 5 (maggio 2017): 790–800. http://dx.doi.org/10.1139/cjfas-2016-0089.

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This article describes a study of PIT-tagged sea lamprey (Petromyzon marinus) ascending four fishways comprising three designs at two dams on the Connecticut River, USA. Migration between dams was rapid (median migration rate = 23 km·day−1). Movement through the fishways was much slower, however (median = 0.02–0.33 km·day−1). Overall delay at dams was substantial (median = 13.6–14.6 days); many fish failed to pass (percent passage ranged from 29% to 55%, depending on fishway), and repeated passage attempts compounded delay for both passers and failers. Cox regression revealed that fishway entry rates were influenced by flow, temperature, and diel cycle, with most lampreys entering at night and at elevated flows, but with no apparent effect of sex or length. Overall delay was influenced by slow movement through the fishways, but repeated failures were the primary factor determining delay. These data suggest that although some lamprey were able to pass fishways, they did so with difficulty, and delays incurred as they attempted to pass may act to limit their distribution within their native range.

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Masumoto, Taku, Masahiko Nakai, Takashi Asaeda e Mizanur Rahman. "Effectiveness of New Rock-Ramp Fishway at Miyanaka Intake Dam Compared with Existing Large and Small Stair-Type Fishways". Water 14, n. 13 (21 giugno 2022): 1991. http://dx.doi.org/10.3390/w14131991.

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The migration of fish is influenced by the unique environmental characteristics of the destination and migratory habitat preferences. There are three fishways in Miyanaka Intake Dam. The rock-ramp fishway was newly established in 2012, creating an environment with different flow velocities and water depths. The purpose of this study was to investigate the effectiveness of the new rock-ramp fishway for native fish through two surveys. In the first survey, traps were installed during the survey period in all three fishways and all fish were caught. The run-up environment was quantified by measuring the flow velocity. In the second survey, fish were caught by spectrum methods upstream and downstream from the dam. It was found that bottom-dwelling fish and swimming fish not bound to the bottom with low migration abilities used the rock-ramp fishway for migration and as a habitat. After the new rock-ramp fishway was built, catches increased upstream from the dam. Further, the rock-ramp fishway is a potential habitat for certain species, such as Cottus pollux. As this is the first study to demonstrate the effectiveness of rock-ramp fishways, the research results are expected to be valuable to fishery managers and those planning river engineering projects.

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Stuart, Ivor G., Brenton P. Zampatti e Lee J. Baumgartner. "Can a low-gradient vertical-slot fishway provide passage for a lowland river fish community?" Marine and Freshwater Research 59, n. 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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Tesi sul tema "Fishways"

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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Burford, Duncan Drake. "An assessment of culverts of fish passage barriers in a Montana drainage using a multi-tiered approach". Connect to this title online, 2005. http://www.montana.edu/etd/available/burford_0505.html.

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Thesis (M.S.)--Montana State University--Bozeman, 2005.
Title from PDF t.p. (viewed on July 4, 2006). Chairperson, Graduate Committee: Tom McMahon. Includes bibliographical references (leaves 46-48).

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Wassvik, Elianne. "Attraction channel as entrance to fishways". Licentiate thesis, Luleå : Luleå University of Technology, 2006. http://epubl.ltu.se/1402-1757/2006/29/index.html.

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Morrison, Ryan Richard. "Turbulence characteristics of flow in a full-scale spiral corrugated culvert fitted and sloped- and slotted-weir baffles". Online access for everyone, 2006. http://www.dissertations.wsu.edu/Thesis/Fall2006/r_morrison_092706.pdf.

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Blank, Matthew David. "Advanced Studies of fish passage through culverts 1-D and 3-D hydraulic modeling of velocity, fish energy expenditure, and a new barrier assessment method /". Thesis, Montana State University, 2008. http://etd.lib.montana.edu/etd/2008/blank/BlankM0508.pdf.

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Fish passage through culverts is an important component of road and stream crossing design. Although no comprehensive inventory of the number of culverts on fishbearing streams in the United States is available, there is an estimated 1.4 million streamroad crossings. The most common physical characteristics that create barriers to fish passage include excessive water velocity, insufficient water depth and large outlet drop heights. Over the past decade, interest in the effect culvert barriers have on aquatic systems has grown; accordingly, various passage assessment techniques have been used to determine whether a structure is a barrier and to what degree (its â€œbarrierityâ€). Recent research has shown that determining the barrierity of a culvert is not trivial, and that different methods are often not congruent in their classification of â€œbarrierityâ€. The purpose of this research was to investigate the effect of velocity on fish passage in great detail by: testing the use of computational fluid dynamics (CFD) for estimating the 3-D velocity field through a culvert; quantifying velocity diversity through culverts for a range of flows; characterizing the energy expenditure paths through a culvert and identifying the passageways Yellowstone cutthroat trout used to successfully negotiate passage; and developing and testing a new barrier assessment method. The research was done, in part, by studying fish passage through culverts in Mulherin Creek, an important spawning tributary for Yellowstone cutthrout trout migrating from the Yellowstone River. Comparisons between predicted and observed velocities show 86% and 82% of variation in the observed velocity data were explained by the CFD model, for flow rates of 1.44 m3/s and 0.87 m3/s, respectively. The diverse velocity field through the culvert barrel created a range of energy expenditure paths through the entire culvert length. Fish movement observations showed successful passage only for trout seeking and using the minimum energy path created, in part, by the skew between the upstream channel and the culvert. This research investigated a new hydraulic approach to assessing barriers that uses the 3-D velocity field. Comparisons between estimated passage and measured passage show the 3-D method most accurately indicated passability compared to a 1-D method.

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Nixon, Kyle Marshall. "Sensitivity of 1-D hydraulic models of fish passage in culverts to descriptions of fish swimming performance". Thesis, Montana State University, 2009. http://etd.lib.montana.edu/etd/2009/nixon/NixonK0809.pdf.

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One way culverts become barriers to the upstream movement of fish is by creating excessive velocities exceeding a fish's swimming ability. FishXing, a common tool for indirectly assessing fish passage, uses fish swimming ability information with one-dimensional culvert hydraulics to predict barrier status of culverts. However, since fish swimming ability data is scarce for many fish species, predictions of a culvert's barrier status can be inaccurate and overly conservative, possibly leading to misclassification or uneconomical design. Additional fish swimming ability research is necessary to strengthen these models. The primary goal of this study was to determine the effects of different swimming ability algorithms on velocity barrier flow rates predicted by one-dimensional culvert hydraulics models. A one-dimensional culvert hydraulics model was created in Visual Basic. This model was designed to mimic FishXing's fish swimming algorithm, or use more complex fish swimming algorithms. Three diverse test culverts were selected to show how varying culvert properties (length, geometry, flow regime, and embedment) influences which fish swimming ability algorithm most affects the predicted velocity barrier flow rate. A "test fish" was designed based upon fish swimming ability literature. Each culvert was subjected to six tests, each testing the sensitivity of a particular fish swimming algorithm. This study determined that for different types of culverts, different components of fish swimming ability algorithms substantially affect the velocity barrier flow rate. The study needed only three test culverts to show that accurate quantification of the fish species' burst speed, burst duration, the burst speed/duration relationship, prolonged swimming speed, and constant deceleration time from burst to prolonged speed is necessary to model diverse fish passage situations. This study also showed that if a fish has a substantial deceleration time, a constant deceleration is probably sufficient to model it. In the future, if programs like FishXing adapt to include deceleration in fish swimming models, constant deceleration is an adequate addition. With this analysis, fish swimming ability variables substantially affecting fish passage were determined. The study can be used to guide further research so swimming ability studies can gather swimming data that is most crucial to predicting fish passage.

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Sikora, Gregory J. "An experimental study of flow regimes in pool and weir fishways". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/mq22673.pdf.

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Lewis, Hylton Varian. "Evaluation of fishway designs for use at the ebb and flow region of rivers in the Eastern Cape, South Africa". Thesis, Rhodes University, 2007. http://hdl.handle.net/10962/d1005123.

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Fishways are devices that are increasingly being used worldwide to assist aquatic biofauna to migrate through man-made barriers such as weirs and large-scale dams that are used for water storage, electricity generation etc. and have a negative impact on both the upstream and downstream movement of aquatic organisms. Fishways are usually low gradient channels with evenly placed chambers which allow such migrating aquatic species minimal stress on their passage over these barriers. Despite the existence of national and regional policies for their provision, their construction has often been inhibited through a lack of local assessment of the available designs, and use of ineffective international designs. As part of a larger national research programme, sponsored by the Water Research Commission, to develop a protocol for fishway design and implementation, this study sought to investigate the suitability of vertical slot and sloping baffle designs to assist the migrations of juvenile catadromic fish species in the ebb and flow region of rivers in the Eastern Cape, South Africa. These fishways were initially tested under controlled conditions at the Experimental Fish Farm at the Department of Ichthyology and Fisheries Science, Rhodes University using various fish species. Using the performance data thus collected they were then installed and monitored in the field for the catadromic Myxus capensis (freshwater mullet) and Monodactylus falciformis (cape moony) migrations during March and November of 2005 at the Kowie River ebb and flow weir. The laboratory tests showed that there was a significantly higher level of migration success in the vertical slot compared with the sloping baffle fishway under all conditions (F=82.157; p<0.001). There was, however, a slow decline in levels of success with increased discharge in the vertical slot fishway. This was in contrast to the sloping baffle design where success increased as discharge increased at a steep gradient (F=74.894; p<0.005). The level of success with the M. capensis was related to the size of the fish for both systems with success increasing from the small to the large fish (F=17.755; p<0.001). For the M. falciformis higher levels of success were found to occur in the vertical slot fishway compared to the sloping baffle fishway (F=11.792; p<0.00086), with no significant differences being found with an increase in discharge. Field data indicated similar trends with higher migration success using the vertical slot fishway. M. capensis were better able to negotiate both devices compared to the M. falciformis and overall levels of success were higher for both species in the field than under laboratory conditions where the migration urge may have declined.

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Cleveson, Aron. "Sheet piling for permanent application in solid water hazards for construction of fishways". Thesis, Linköpings universitet, Medie- och Informationsteknik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-106950.

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När ett vattendrag regleras genom byggnation av dammar och vattenkraftverk skapas hinder, även så kallade vandringshinder för fiskar och andra vattenlevande organismer. Genom att bygga en fiskväg möjliggörs åter denna vandring. På senare år har det blivit vanligt att anlägga fiskvägar på ett naturligt sätt. Den senast framtagna metoden för att anlägga naturliga fiskvägar är att bygga ett så kallat inlöp. Inlöpet uppförs genom att en del av en damm skiljs av med hjälp av en skiljevägg som ansluts mot befintlig dammkonstruktion. Skiljeväggen kan utföras på flera sätt, ett av dess är genom att driva ner en kontinuerlig stålspont. Syftet med examensarbetet är att undersöka möjligheten att uppföra ett inlöp med hjälp av en tät kontinuerlig konsolspont av stål, i anslutning till befintlig dammkonstruktion. Målet med examensarbetet är att öka kunskapen vid användning av kontinuerlig stålspont för byggnation av fiskvägar i anslutning till befintliga dammkonstruktioner.

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Pennock, Casey A. "Fragmentation and fish passage: can fishways mitigate discontinuities in Great Plains fish communities?" Thesis, Kansas State University, 2016. http://hdl.handle.net/2097/34557.

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Master of Science
Department of Biology
Keith B. Gido
Fishways are a common tool for mitigating the effects of habitat fragmentation on fish communities, but their utility in low-gradient, sand-bed rivers of the Great Plains is not well studied. The Lincoln Street Fishway on the Arkansas River became operational in 2015 and was built specifically to pass small-bodied threatened fishes. We used a combination of surveys up-and downstream of the barrier and tagging experiments to test the ability of fishes to move into and through the fishway. Differences in fish community structure up- and downstream of the dam were more pronounced prior to the construction and operation of the fishway. In particular, Emerald Shiner Notropis atherinoides was absent from collections upstream of the dam before fishway construction, but commonly collected upstream in 2015 and 2016 surveys. Surveys within the fishway structure revealed 29 species, or 74% of the total species captured during our study were using the fishway. To further quantify fishway passage, we used a VIE experiment to assess if fish marked downstream of the fishway moved into or upstream of the fishway. Although we did not recapture marked fish upstream of the fishway, some marked individuals moved into the fishway. Finally, we conducted a PIT tag experiment to evaluate short distance movements within the fishway for three species of small-bodied minnow and were able to document upstream movement across a gradient of flows through the fishway. Results from our study illustrate the potential for fishways to mitigate the effects of habitat fragmentation on small-bodied fishes in sand-bed rivers.

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Libri sul tema "Fishways"

Hacker, Robert L. Willamette Falls fishways, 1885-1971. Corvallis, Or: R.L. Hacker, 1990.

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Gaboury, M. N. Pool and riffle fishways for small dams. [Winnipeg, Man.?]: Manitoba Natural Resources, Fisheries Branch, 1995.

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Lee, Randall T. Tributary Fishway Inspection Program: Report for FY 1985 & 1986. [Washington, D.C.]: U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, National Marine Fisheries Service, 1987.

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Burdick, Bob D. Five-year evaluation of fish passage at the Redlands Diversion Dam on the Gunnison River near Grand Junction, Colorado, 1996-2000: Final report. Grand Junction, CO: U.S. Fish and Wildlife Service, Colorado River Fishery Project, 2001.

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Gudjonsson, Thor. Þróun í gerð fiskvega á Íslandi fram til 1970: Fish passes and fishways in Iceland until 1970. Kópavogi: Dreifing, Háskólaútgáfan, 2004.

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Chesney, William R. Shasta racks modification/ repair: Final report. [Yreka?, Calif.]: State of California, Resources Agency, Dept. of Fish and Game, Inland Fisheries Division, 1992.

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Recovery Program for Endangered Fish of the Upper Colorado River Basin. e Colorado River Fishery Project (U.S.), a cura di. Five-year evaluation of fish passage at the Redlands Diversion Dam on the Gunnison River near Grand Junction, Colorado, 1996-2000: Final report. Grand Junction, CO: U.S. Fish and Wildlife Service, Colorado River Fishery Project, 2001.

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Capitoli di libri sul tema "Fishways"

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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Schwevers, Ulrich, e Beate Adam. "Fishways for Downstream Migration". In Fish Protection Technologies and Fish Ways for Downstream Migration, 167–201. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-19242-6_5.

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Daksh, Kumar, e Venu Chandra. "Review on Nature-Like Step-Pool Fishways". In Lecture Notes in Civil Engineering, 191–202. Singapore: Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-1227-4_14.

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Eggers, Florian, Olle Calles, Johan Watz, Martin Österling e Viktor Hebrand. "Methods for the Assessment of Fishways (Upstream Fish Passage)". In Advances in Hydraulic Research, 67–79. Cham: Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-56093-4_6.

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Rodriguez, Álvaro, Juan R. Rabuñal, María Bermúdez e Alejandro Pazos. "Automatic Fish Segmentation on Vertical Slot Fishways Using SOM Neural Networks". In Advances in Computational Intelligence, 445–52. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-38679-4_44.

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Onitsuka, Kouki, Juichiro Akiyama, Yusuke Mori, Yohei Iiguni e Tatsuya Kobayashi. "Effects of Notch Ratio on Migration Rate in Pool-And-Weir Fishways". In Advances in Water Resources and Hydraulic Engineering, 2247–52. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-89465-0_386.

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Bermúdez, M., J. Puertas, L. Cea, L. Pena e L. Balairón. "Experimental and numerical evaluation of sixteen different designs of vertical slot fishways". In Environmental Hydraulics. Volume 2, 1103–8. London: CRC Press, 2022. http://dx.doi.org/10.1201/9780429100314-84.

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Rico-Diaz, Angel J., Alvaro Rodriguez, Daniel Villares, Juan R. Rabuñal, Jeronimo Puertas e Luis Pena. "A Detection System for Vertical Slot Fishways Using Laser Technology and Computer Vision Techniques". In Advances in Computational Intelligence, 218–26. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-19258-1_19.

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Liu, Juntao, Biao Lv e Yan Xing. "Hydraulic Characteristics of Fishways Using a Fully Three-Dimensional Non-hydrostatic Pressure Mathematical Model". In Lecture Notes in Civil Engineering, 339–52. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-5783-3_27.

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Yoshioka, Hidekazu, Yuta Yaegashi, Koichi Unami e Masayuki Fujihara. "Application of Stochastic Control Theory to Biophysics of Fish Migration Around a Weir Equipped with Fishways". In Theory, Methodology, Tools and Applications for Modeling and Simulation of Complex Systems, 190–200. Singapore: Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-2669-0_21.

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Atti di convegni sul tema "Fishways"

Onitsuka, Kouki, Juichiro Akiyama, Yohei Iiguni, Daisuke Kiuchi e Noriaki Kawara. "Flow Stability in Pool-and-Weir Fishways, Plunging and Streaming Flows". In ASME/JSME 2007 5th Joint Fluids Engineering Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/fedsm2007-37331.

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In Japanese rivers, there are many river constructions, i.e., dams, weirs, drops, for the purpose of flood control. Fishways are river constructions which facilitate migration of fish past dams and weirs. There are a lot of fishway types such as pool-and-weir type, stream type, operation type and so on (see Nakamura, 1995). The pool-and-weir fishway is typical type in Japanese rivers. There are three types of flow regimes in pool-and-weir fishways such as a plunging flow, streaming flow and intermixed flow of plunging and streaming flows. Rajaratnam et al. (1988) proposed a prediction formula of these flow regimes. However, this formula has no physical meaning. Further the accuracy of formula is not high. In this study, the criterion formula, which can predict the flow regime in the pool-and-weir fishway, is suggested semi-theoretically. The experiments were conducted with changing the aspect ratio and discharge in the pool-and-weir fishway. The water surface profiles were measured with a point gauge and also two components velocities were measured with a 2-D electromagnetic current meter. A new criterion formula, which is able to predict the flow formation, is proposed.

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Fuentes-Pérez, Juan Francisco, Ana García-Vega, Francisco Javier Bravo-Córdoba e Francisco Javier Sanz-Ronda. "Smart Fishways: A Sensor Network for the Assessment of Fishway Performance". In SIBIC 2022. Basel Switzerland: MDPI, 2022. http://dx.doi.org/10.3390/blsf2022013076.

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Acharya, M., J. A. Kells e C. Katopodis. "Some Hydraulic Design Aspects of Nature-Like Fishways". In Joint Conference on Water Resource Engineering and Water Resources Planning and Management 2000. Reston, VA: American Society of Civil Engineers, 2000. http://dx.doi.org/10.1061/40517(2000)45.

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Farzadkhoo, Maryam, Richard Kingsford, Iain Suthers, John Harris, William Peirson e Stefan Felder. "Australian Native Fish Attracted by Jet Flows into Tube Fishways". 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-39wc252171192022580.

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Branco, Paulo, Ana Margarida Mascarenhas, Gonçalo Duarte, Filipe Romão, Susana Dias Amaral, Maria Teresa Ferreira, António Pinheiro e 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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Tigner, C., A. Degré, B. de e L. Petiau. "Study of the stage-discharge relationship in nature-like fishways". In The International Conference On Fluvial Hydraulics (River Flow 2016). Taylor & Francis Group, 6000 Broken Sound Parkway NW, Suite 300, Boca Raton, FL 33487-2742: CRC Press, 2016. http://dx.doi.org/10.1201/9781315644479-331.

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SYMS, CHANNING C., MARK A. KIRK, DANIELE TONINA e CHISTOPHER C. CAUDILL. "BIOLOGICAL TURBULENCE INTENSITY INDEX FOR PACIFIC LAMPREY PASSAGE OF ARTIFICIAL FISHWAYS". In 38th IAHR World Congress. The International Association for Hydro-Environment Engineering and Research (IAHR), 2019. http://dx.doi.org/10.3850/38wc092019-0928.

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Fujita, Tomohiko, Yasuyuki Shimizu e Yasumitsu Katou. "Simulation of upstream migration of fish through fishways using iRIC-UTT". 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-39wc2521711920221296.

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FUJIHARA, MASAYUKI, TADAO FUKUSHIMA e KAZUKO TACHIBANA. "NUMERICAL MODELLING OF FLOWS IN VERTICAL SINGLE-SLOT AND DOUBLE-SLOT FISHWAYS". In Proceedings of the 13th IAHRߝ;APD Congress. World Scientific Publishing Company, 2002. http://dx.doi.org/10.1142/9789812776969_0188.

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Fiedler, Gerrit, Martin Henning e Roman Weichert. "Homogenizing Auxiliary Flow in Supply Structures of Fishways with Minimal Space Requirements". 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-39wc2521711920221051.

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Rapporti di organizzazioni sul tema "Fishways"

Johnson, E. L., T. S. Clabough, M. L. Keefer, C. C. Caudill, P. N. Johnson, W. T. Nagy e M. A. Jepson. Evaluation of Dual Frequency Identification Sonar (DIDSON) for Monitoring Pacific Lamprey Passage Behavior at Fishways of Bonneville Dam, 2011. Fort Belvoir, VA: Defense Technical Information Center, gennaio 2012. http://dx.doi.org/10.21236/ada581330.

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Winter, H. V., A. B. Griffioen, L. A. J. Nagelkerke, M. Valkenaars, M. Kooiman, N. Dijkstra e P. G. M. Heuts. Regional connectivity and movements of freshwater fish in the Langbroekerwetering, a weir-regulated water system with De Wit fishways : A LIFE-IP study using PIT telemetry. IJmuiden: Wageningen Marine Research, 2022. http://dx.doi.org/10.18174/575905.

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Aaserude, Robert G., e John F. Orsborn. New Concepts in Fish Ladder Design, Volume II of IV, Results of Laboratory and Field Research on New Concepts in Weir and Pool Fishways, 1982-1984 Final Project Report. Office of Scientific and Technical Information (OSTI), agosto 1985. http://dx.doi.org/10.2172/5965536.

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Palmer, Richard, Kevin Mulligan, Brett Towler, Bjorn Lake, Marcia Rojas, Elizabeth Lotter e Alexander Haro. Fishway Entrance Palisade. Office of Scientific and Technical Information (OSTI), febbraio 2022. http://dx.doi.org/10.2172/1905243.

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Brown, Richard S., David R. Geist e Matthew G. Mesa. The Use of Electromyogram (EMG) Telemetry to Assess Swimming Activity and Energy Use of Adult Spring Chinook Salmon Migrating through the Tailraces, Fishways, and Forebays of Bonneville Dam, 2000 and 2001. Office of Scientific and Technical Information (OSTI), ottobre 2002. http://dx.doi.org/10.2172/15010059.

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Basham, Larry R. Adult Fishway Inspections on the Columbia and Snake Rivers, 1984-1985 Annual Report. Office of Scientific and Technical Information (OSTI), giugno 1985. http://dx.doi.org/10.2172/5324809.

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Vucelick, Jessica A., e Geoffrey A. McMichael. Walla Walla River Basin Fish Screen Evaluations, 2003: Nursery Bridge Fishway and Garden City-Lowden II. Office of Scientific and Technical Information (OSTI), novembre 2003. http://dx.doi.org/10.2172/15020973.

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Wielick, Rolf. Lower Snake River Little Goose and Lower Granite Locks and Dams: Adult Fishway Systems Emergency Auxiliary Water Supply. Fort Belvoir, VA: Defense Technical Information Center, settembre 2000. http://dx.doi.org/10.21236/ada392669.

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Congleton, J. L., E. J. Wagner e R. R. Ringe. Evaluation of Fishway Designs for Downstream Passage of Spring Chinook Salmon and Steelhead Trout Smolts, 1987 Final Report. Office of Scientific and Technical Information (OSTI), marzo 1988. http://dx.doi.org/10.2172/6786802.

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Vucelick, J., e G. McMichael. Walla Walla River Basin Fish Screen Evaluations; Nursery Bridge Fishway and Garden City/Lowden II Sites, 2003 Technical Report. Office of Scientific and Technical Information (OSTI), novembre 2003. http://dx.doi.org/10.2172/962130.

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