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 “"Marine zooplankton"”.
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Dynamics of marine zooplankton : social behavior ecological interactions, and physically-induced variability
Marine ecosystems reflect the physical structure of their environment and the biological processes they carry out. This leads to spatial heterogeneity and temporal variability, some of which is imposed externally and some of which emerges from the ecological mechanisms themselves. The main focus of …
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Dynamics of marine zooplankton : social behavior, ecological interactions, and physically-induced variability
Marine ecosystems reflect the physical structure of their environment and the biological processes they carry out. This leads to spatial heterogeneity and temporal variability, some of which is imposed externally and some of which emerges from the ecological mechanisms themselves. The main focus of …
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The chaetognatha community of the Agulhas Current: its structure and related properties
A study has been made of a select group of marine zooplankton - the Chaetognatha. The analysis was done from a community viewpoint, that is, an objective technique was used to identify related groups of the Chaetognatha and these groups were then correlated with the distribution, abundance and …
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Macrogeographic Genetic Structure in Acanthephyra curtirostris (Oplophoridae)
… living space on our planet is occupied by zooplankton species long assumed to be widespread and genetically undifferentiated across their species range. Recently, however, data from sensitive DNA-based molecular markers has shown that many cryptic species exist in the sea and that marine …
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Influence of protozoan grazing on the marine geochemistry of particle reactive trace metals
… examines the role of protozoan grazers in the marine geochemistry of strongly hydrolyzed, particle-reactive trace metals, in particular Th and Fe. A series of tracer experiments was carried out in model systems in order to determine the effect of grazer-mediated transformations on the chemical …
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Physical processes and zooplankton distribution in the Great South Channel : observational and numerical studies
… produce dense aggregations of certain species of zooplankton in the Great South Channel (GSC) of the Gulf of Maine?" The thesis consists of three relatively independent parts: an observational study made while following two right whales as they fed on dense patches of the copepod Galanus …
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Distribution, patchiness, and behavior of Antarctic zooplankton, assessed using multi-frequency acoustic techniques
The physical and biological forces that drive zooplankton distribution and patchiness in an antarctic continental shelf region were examined, with particular emphasis on the Antarctic krill, Euphausia superba. This was accomplished by the application of acoustic, video, and environmental sensors …
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The ecology of colonial radiolarians : their colony morphology, trophic interactions and associations, behavior, distribution, and the photosynthesis of their symbionts
… are among the most common and abundant large zooplankton, but they have been little studied by modern biologists. Colonies were found on 98% of epipelagic diving stations in the period from 1977 to 1979. Measured abundances ranged from .04 to 540 colonies per m3. Colony morphology of common …