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 39 for “"acoustic telemetry"”.
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Development of an acoustic telemetry platform for underwater sensing
… after retrieval. Having a wireless underwater telemetry platform can significantly reduce the cost and efforts of deployment of marine sensors, eliminate the need for periodic sensor collection for data download, improve the reliability of underwater sensors by eliminating the need for wires …
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Design and performance analysis of a digital acoustic telemetry system
Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 1987.
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USING ACOUSTIC TELEMETRY TO ANALYZE THE IMPACTS OF COMMON CARP ON WILD RICE RESTORATION
… uprooting of plants, and consumption of seed. Acoustic telemetry was used to document Common Carp movements in Waishkey Bay in the upper St. Marys River, MI where wild rice habitat is present. Exclosures were established to measure the influence of carp presence on wild rice seeding success. …
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Acoustic Telemetry Provides New Insights into the Ecology of Smallmouth Bass in Eastern Lake Ontario
… the present study was to examine whether a novel acoustic telemetry approach could be used to obtain information on the spatial ecology of Smallmouth Bass in the eastern basin of Lake Ontario. Near continuous detections were recorded for eleven Smallmouth Bass, expanding the practical toolbox of …
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The movement ecology of common bream Abramis brama in a highly connected wetland using acoustic telemetry.
… to examine unconstrained fish movement. Thus, biotelemetry was applied to investigating the movement ecology of bream in the northern Broads wetland system. Acoustic telemetry is a central tool for fish movement ecology, but robust data interpretation requires detailed knowledge of its efficiency …
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Environmental predictors of Carcharodon carcharias presence at two popular beaches in False Bay, South Africa using acoustic telemetry
… light levels. In this study, I use passive acoustic telemetry on 56 tagged white sharks to determine whether the same or other environmental variables explain variation in white shark presence at the same beaches. A total of 13 803 and 1 481 white shark detections were recorded between April …
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Delination of Coastal Shark Habitat within North Carolina Waters Using Acoustic Telemetry, Fisher-Independent Surveys, and Local Ecological Knowledge
… using fishery-independent means. Catch data and acoustic telemetry were used to assess shark habitat at the coastal nearshore scale. Sharks captured near Cape Hatteras could be grouped into warm water and cold water assemblages. Juvenile Dusky (Carcharhinus obscurus) and Sandbar (Carcharhinus …
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Movement ecology of two threatened anadromous species, twaite shad Alosa fallax and sea lamprey Petromyzon marinus, revealed by acoustic telemetry.
… Petromyzon marinus was investigated using acoustic telemetry during and between their spawning migrations in the heavily fragmented lower River Severn catchment in western Britain. Fish passage studies often consider the impacts of single barriers, yet many rivers actually contain multiple …
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Utilizing an Integrated Approach to Explore Niche in a Complex Equatorial System
… in space use across diel or seasonal periods. Acoustic telemetry has been used to track the movements of aquatic species across a range of spatial scales and offers a powerful tool to estimate spatial niche and the mechanisms which facilitate coexistence. Additionally, trophic ecology is an …
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Filling Conservation Gaps For Gulf Sturgeon (Acipenser desotoi) Using Specialized Acoustic Transmitters
… their natal river in relation to the Mobile Bay. Acoustic telemetry has been a common method of monitoring GS; however, due to data from this methodology being presence-absence, inferences must be made on why GS are where they are and what they are experiencing there. Recent innovations in …
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The spatial ecology and behaviour of the broadnose sevengill shark (Notorynchus cepedianus) in South Africa
… of sizes of N. cepedianus in South Africa using acoustic telemetry, and a national scale array of acoustic receivers (the Acoustic Tracking Array Platform). Finally, an array of acoustic receivers in False Bay, Cape Town, were used to investigate patterns in the presence and fine-scale movement …
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MULTISPECIES USE OF VARIOUS HABITATS IN THE MISSISSIPPI SOUND WITH AN EMPHASIS ON FUTURE OYSTER REEF CONSTRUCTION
… to transient fish is lacking. This study used acoustic telemetry to provide baseline data on the potential for interaction between five transient fish species, and oyster reef construction activities. Overall, I noted that habitat preferences are hierarchical with sandy habitats nearest to bay …
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Passage Route Survival and Behavior of Juvenile Salmon at Priest Rapids Dam, Columbia River, WA
… the efficacy of this new passage structure, an acoustic telemetry study was conducted in the spring of 2014 to determine the ability of the bypass to collect and safely pass juvenile steelhead and Chinook salmon. The bypass collected 47% of the monitored steelhead and 38% of the monitored …
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Swimming behavior and energetics of sharks
In a field study of blue shark swimming behavior, acoustic telemetry was used to record depth, swimming speed and tailbeat frequency from free-ranging blue sharks (Prionace glauca) in northwestern Atlantic slope waters. Records obtained from five sharks show a consistent pattern of vertical …
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An Analysis of Juvenile Chinook Salmon Outmigration Speed and Survival in Response to Habitat Features: Sacramento River from Knights Landing to Sacramento, California
… run Chinook salmon smolts were tracked using acoustic telemetry techniques. Habitat features were measured and quantified throughout the study area to evaluate how Chinook salmon respond to key levee features including shade, instream woody material, and aquatic vegetation. The overall average …
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Habitat use of Gulf Sturgeon (Acipenser oxyrinchus desotoi) in Pascagoula River holding areas and in estuarine and marine environments including Ship Island, Mississippi and Mobile Bay, Alabama
… to Mobile Bay. Tracking of GS movements using acoustic telemetry has occurred since the late 1990s but has increased in use since 2015 for monitoring important habitats that GS rely on throughout their lifetime. For this study, tagged GS were monitored in three areas throughout the central Gulf …
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Biology, movement behaviour and spatial dynamics of an exploited population of smooth hound shark mustelus mustelus around a coastal marine protected area in South Africa
… Africa were investigated over two years using acoustic telemetry. Sharks spent the majority of the time (in hours, average 79%) inside the Langebaan Lagoon MPA, and some sharks (n = 2 of 15 recorded during a full year) did not leave the reserve during the observation period. Time spent inside …
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Using mark-recapture methods to estimate population size and survival of pyjama sharks (Poroderma africanum) in Mossel Bay, South Africa
… applied to conventional tag recapture data and acoustic telemetry data to estimate abundance, apparent survival, recapture probability and temporary emigration for the pyjama shark, Poroderma africanum in Mossel Bay, South Africa over a five-year period. This study applied Pollock's robust …
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Spatial ecology of adult spotted seatrout, Cynoscion nebulosus, in Louisiana coastal waters
… Louisiana primarily using high-resolution acoustic telemetry and secondarily, conventional tagging (mark-recapture) data. At the largest spatial scale investigated, I found that adults exhibited a high degree of estuarine fidelity and rarely undertook large-scale movements in excess of 50 …
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Biological Impacts and Uses of Black Bass Competitive Fishing Tournaments on Large Lake Systems
… through the use of mark recapture and acoustic telemetry on large lake systems.
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