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 8 of 8 for “"siphonophores"”.
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Nutritional ecology of Agalma okeni and other siphonophores from the epipelagic western North Atlantic Ocean
The feeding and fishing behavior of siphonophores in their natural environment: was observed by SCUBA diving at 171 stations in warm-water areas of the Western North Atlantic Ocean. Calycophorae and Physonectae showed a two-phase cycle of fishing and swimming. The fishing posture of a siphonophore …
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Underwater Robotic Propulsors Inspired by Jetting Jellyfish
… and then validated. A modular robot inspired by siphonophores was developed and initial efforts were made in laying down the foundation for understanding of this complex locomotion mechanism. Siphonophores are colonial organisms consisting of several jetting bodies attached to a central stem. An …
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Estimating Gulf of Maine zooplankton distributions using multiple frequency acoustic, video and environmental data
… multiple frequency acoustic measurements from siphonophores. Estimates of the numerical density of these animals are made using echo integration data from a scientific echo-sounder. Multiple frequency acoustic scattering data from a survey of an internal wave are analyzed to determine the …
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Estimating Gulf of Maine zooplankton distributions using multiple frequency acoustic, video and environmental data
… multiple frequency acoustic measurements from siphonophores. Estimates of the numerical density of these animals are made using echo integration data from a scientific echo-sounder. Multiple frequency acoustic scattering data from a survey of an internal wave are analyzed to determine the …
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Locomotion and Control of Cnidarian-Inspired Robots
… propulsion of colonial animals known as siphonophores. This dissertation studies how these two extremes of underwater soft body propulsion are able to achieve simple yet effective control and locomotion, and thus inform the design of effective vehicle propulsion control and actuation. Two …
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Acoustic classification of zooplankton
… (e.g. euphausiids), and gas-bearing (e.g. siphonophores). The relationship between backscattered energy and animal biomass has been shown to vary by a factor of —19,000 across these categories, so that to make accurate estimates of zooplankton biomass from acoustic backscatter measurements …
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Abondance et variabilité des méduses en Baie de Calvi (Corse)
… et interannuelles. La diversité des méduses siphonophores calycophores a été décrite et les critères taxonomiques permettant d’identifier les espèces dominantes (Chelophyes appendiculata, Lensia subtilis, Abylopsis tetragona et Muggiaea atlantica) et de leurs stades de développement ont été …
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Invertebrate plankton assemblages in the surf zones of St. Lucia and Mhlathuze Estuaries, KwaZulu-Natal, South Africa
… Other commonly abundant hotoplankton included siphonophores, chaetognaths, dadocerans and medusae. The meroplankton composed of polychaetes and decapod larvae which dominated this group. Decapod larvae included pagurid, brachyuran and shrimp-like forms. Benthoplanktonic crustaceans sampled from …