Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 9 of 9 for “"Fishway"”.
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Field testing of the Tube Fishway
… freshwater fish movements and migrations. Fishways aim to restore passage, however, they are not widely implemented, often due to costs and operational challenges. To address some limitations of existing fishway designs, novel technologies are emerging, such as the Tube Fishway. The Tube …
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The Mzingazi gauging weir and its effects on the fish and macrocrustacean communities of Lake Mzingazi
… the lake outlet, which included a pool and weir fishway to allow the migration of fauna in and out of the lake. The fishway was aimed at allowing euryhaline fish species to migrate out to sea to spawn and back to the lake to complete their life cycle since Lake Mzingazi historically served as an …
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How does rock-ramp fishway surface texture affect the passage success of small-bodied Great Plains fishes?
… behavior and performance are affected by the key fishway design parameters of slope, length, and texture. Recent research has provided more information on fishway slope and length, and identified texture of the surface between the larger roughness elements as an area needing more investigation. We …
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Spatial and Temporal Patterns of Anadromous Fish Passage at Boshers Dam Vertical Slot Fishway on the James River, Richmond, Virginia
Boshers dam vertical slot fishway, James River, Virginia, U.S.A., opened in 1999 and restored connectivity to 543.3 km of spawning habitat for anadromous fish. The fishway also allowed local movement of resident species. Video observation from 2001-2005 was used to evaluate environmental predictors …
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The role of fish physiology, behaviour, and water discharge on the attraction and passage of adult sockeye salmon (Oncorhynchus nerka) at the Seton River dam fishway, British Columbia
… connectivity of migration routes for fish. While fishways can provide access between downstream and upstream habitats, it is important that passage can occur with minimal delay, energy expenditure, and physiological stress. The research presented here is based on investigations into fishway …
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Non-structural Deterrents and Opportunistic Dispersal in an Invasive Fish: The Role of Among-Individual Variation on Common Carp Movement
… same deterrents were deployed at an outdoor fishway with more realistic field conditions. Native and non-native fish passage across the fishway was quantified to determine whether a behavioural deterrent (sound) can produce an avoidance response sufficient for conservation applications. This …
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Simulation of free-surface flows and development of an improved particle method
… of this study is to apply WC-MPS to simulate fishway flows and dry granular flows, numerically investigating the flows structures and velocity distributions. However, this method suffers from pressure noise and unphysical pressure fluctuations in modeling flows. Therefore, the other aspect of …
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Genetic evaluation of American shad Alosa sapidissima restoration success in James River, Virginia
… study to assess passage at Bosher's Dam fishway. Ninety-four American shad were radio-tagged on the spawning grounds below Bosher's Dam. Approximately one-half of the tagged shad were detected at the escapement receiver within 24 hours after tagging, and the average residence times of …
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The wetted ramp as a useful tool to service smaller-bodied finfishes at low-head acquatic barriers
<p>This study examined the effects of finfish length and behavior on passage success on the wetted ramp, a proposed passage device for finfishes at low-head aquatic barriers. There were two hypotheses: there is a size effect to passage success because larger fish have relatively less propulsive …