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 20 of 23 for “"Fish passage"”.
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Fish Passage at UDOT Culverts: Prioritization and Assessment
… more involved in providing Aquatic Organism Passage (AOP) at road-stream crossings. Department of Transportation (DOT) emphasis on AOP has been driven largely in response to endangered species listings, other agencies' initiatives, and the desire to restore ecosystem connectivity to …
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A Model Study of the Hydraulics Related to Fish Passage Through Embedded Culverts
… methods of culvert installation with respect to fish passage requirements. The overall objective of the research program was to quantify the hydraulic conditions, which included flow depths and velocity distributions, for at-grade and embedded culverts. A physical hydraulic model study was …
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Fish passage design for Southern Hemisphere small-bodied fish: Hydrodynamic and behavioural assessment using spoiler baffles
… and Galaxias brevipinnis, during their upstream passage through spoiler baffles. The comparative behavioural assessment, together with the measured hydrodynamic information, is used to assess three different arrangements of spoiler baffles. The primary objective is to identify the baffle …
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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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Population assignment of entrained migratory Westslope Cutthroat Trout in North Idaho
… Dam near Newport, Washington. Completed without fish passage capabilities in 1955, Albeni Falls Dam has been of interest as a site for restoring fish passage due to observations of large numbers of migratory salmonids below it. We attempted to determine the most likely spawning tributary of …
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Field testing of the Tube Fishway
Freshwater fish populations are currently declining at the fastest rate of any vertebrate group, partly attributable to the effects of in-stream barriers in rivers. These barriers disrupt connectivity and impede essential freshwater fish movements and migrations. Fishways aim to restore passage, …
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Vertebrate Faunal Analysis of The Anderson Creek Site (45KP233)
… of Transportation (WSDOT) in 2015, as part of a fish passage replacement project in Puget Sound. Faunal analysis of remains from this excavation was completed by the author in collaboration with Dr. Megan Partlow. Analysis documented a variety of mammal and fish remains, consisting primarily of …
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Natural Barrier Assessment and Modeling for Fish Communities in Delaware Water Gap National Recreation Area
… role in structure and composition of stream fish habitat. Determining the effects of natural barriers on fish communities is important for understanding ecological processes that may occur throughout barrier-affected habitats. Additionally, modeling the likelihood of natural barrier …
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Host Fish Assessment and Gravidity for the Mussel Elliptoideus sloatianus
… habitat and the potential blockage of host fish passage into areas where the mussel lives. For this study, we located three populations of £. sloatianus in the Flint River in southwest Georgia. Gravid mussels were collected in late winter through early spring when the river was above normal …
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Estimating Flow Through Rock Weirs
… increase hydraulic head upstream, and facilitate fish passage, channel stabilization, floodplain reconnection, and in-stream habitat creation. When used in constructed wetlands, rock weirs play a valuable role in developing appropriate wetland hydrology. Although rock weirs are commonly used, a …
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The Swift Water Place: Water Quality, Fish Ecology, and Hydropower in the Merrimack River since the Time of Thoreau
… in 1847 spelled the end of the anadromous fish runs that had populated the Merrimack for centuries. Salmon restoration proceeded for three decades after the Civil War until fish passage failed. Later, water filtration plants allowed communities to draw clean water from the Merrimack, …
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How does rock-ramp fishway surface texture affect the passage success of small-bodied Great Plains fishes?
… barriers that prevent the upstream movement of fish. State and federal resource management agencies have turned to fish passage structures to restore connectivity. However, the passage efficiency of current structures may be limited for native small-bodied fish species by a lack of information …
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The response of eel, lamprey and brown trout to conditions associated with barriers to up- and downstream movement under experimental conditions in a flume
… history, sometimes causing serious declines in fish populations. Free passage of fish throughout the watercourse is necessary for species utilising different habitats for e.g. residing, spawning and feeding. Fish passes are employed to mitigate for impoundments, but are historically biased in …
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Non-structural Deterrents and Opportunistic Dispersal in an Invasive Fish: The Role of Among-Individual Variation on Common Carp Movement
… ecology to invasion biology. Using an invasive fish, Common Carp (Cyprinus carpio), as my study species, I examined the influence of among-individual behavioural variation on opportunistic dispersal and on the effectiveness of non-structural deterrents - methods used to limit the movement of …
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Genetic evaluation of American shad Alosa sapidissima restoration success in James River, Virginia
… to habitat degradation, fragmentation, and over-fishing. Hatchery supplementation is often used for stock restoration, but the effects of supplementation on population structure and genetic diversity are rarely assessed. This study employed molecular markers to evaluate how supplementation of the …
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Fish Ladders Designed for Drop Culverts and Central Stoneroller Ecology Across a Latitudinal Gradient
… connectivity is essential for the persistence of fish populations and maintenance of fish assemblage structure. Stream-road crossings can become barriers resulting in a loss of connectivity. Creating innovative tools for fisheries managers to allow fish passage through barrier stream-road …
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