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 78 for “"Gulf of Maine"”.
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Dinoflagellate blooms and physical systems in the Gulf of Maine
Numerous studies have shown dinoflagellate blooms to be closely related to density discontinuities and fronts in the ocean. The spatial and temporal patterns of the dinoflagellate population depend on the predominant mode of physical forcing, and its scales of variability. The present study …
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Physical controls on copepod aggregations in the Gulf of Maine
… explores the role that the circulation in the Gulf of Maine (GOM) plays in determining the distribution of dense aggregations of copepods. These aggregations are an important part of the marine ecosystem, especially for endangered North Atlantic right whales. Certain ocean processes may …
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Physical controls on copepod aggregations in the Gulf of Maine
… explores the role that the circulation in the Gulf of Maine (GOM) plays in determining the distribution of dense aggregations of copepods. These aggregations are an important part of the marine ecosystem, especially for endangered North Atlantic right whales. Certain ocean processes may …
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Cycling of linear alkylbenzenes (LABs) in the Gulf of Maine
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1995.
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Trait-based modeling of larval dispersal in the Gulf of Maine
… that governs the spatial and temporal dynamics of marine ecosystems. For many marine species, population connectivity is driven by dispersal during a planktonic larval phase. The ability to obtain accurate, affordable, and meaningful estimates of larval dispersal patterns is therefore a key …
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Phosphorous cycling in the Gulf of Maine : a multi-tracer approach
Knowledge of temporal and spatial nutrient turnover and export rates is of great importance for a variety of investigations, ranging from nutrient limitation to contamination uptake and removal. However, there are few methods that allow for the in situ elucidation of these processes. In this thesis …
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Sustainable development of maritime cultural heritage in the Gulf of Maine
<p>In this study the principles of sustainable development and ecosystem-based management are applied to develop a conservation policy for maritime cultural heritage in the Gulf of Maine. This dissertation first examines the effectiveness of existing laws, policies and preservation programs …
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Dynamics of phytoplankton community composition in the western Gulf of Maine
<p>This dissertation is founded on the importance of phytoplankton community composition to marine biogeochemistry and ecosystem processes and motivated by the need to understand their distributions on regional to global scales. The ultimate goal was to predict surface phytoplankton communities …
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Life History Variation of Common Terns in the Gulf of Maine
… competing functions in the energy budget of an organism. Reproductive effort varies as organisms make reproductive decisions based on available energy. Factors influencing life histories are those that change energy and time budgets such as diet, competition, and environmental …
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Phosphorus cycling in the Gulf of Maine : a multi-tracer approach
… Program in Oceanography, Massachusetts Institute of Technology and the Woods Hole Oceanographic Institution, 1999 [February 1999]
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Trait-based modeling of larval dispersal in the Gulf of Maine
… that governs the spatial and temporal dynamics of marine ecosystems. For many marine species, population connectivity is driven by dispersal during a planktonic larval phase. The ability to obtain accurate, affordable, and meaningful estimates of larval dispersal patterns is therefore a key …
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A numerical investigation of tidal current circulation in the Gulf of Maine
The hydrodynamical-numerical model of Walter Hansen is used to computer tidal heights and tidal currents in the Gulf of Maine. The model uses two adjacent open boundaries at which the tides are prescribed at each time step, using four tidal constituents. The grid size is six nautical miles and the …
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Spatial management of groundfish resources in the Gulf of Maine and Georges Bank
… five large year-round fishery closures in the Gulf of Maine and Georges Bank. These closures are partially protected marine protected areas (MPAs) restricting commercial fishing with bottom-tending gears. To date, evaluation of their performance has focused on the productivity of individual …
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Postglacial Sandy Hill: A Regional Manifestation of the Gulf of Maine Archaic Tradition
Over twenty years of archaeological excavations at Sandy Hill, in Mashantucket, CT, have provided an incredibly rich assemblage of artifacts. Yet some of the most basic questions about Sandy Hill's Early Archaic inhabitants remain unanswered. This thesis will synthesize the results of major …
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Estimating Gulf of Maine zooplankton distributions using multiple frequency acoustic, video and environmental data
… combining acoustic models and an integrated set of field data. The accuracy of existing scattering models for fluid-like and elastic-shelled animals is determined by analysis of scattering data from individual animals in a laboratory tank. Results indicate that simple two-ray scattering models …
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Estimating Gulf of Maine zooplankton distributions using multiple frequency acoustic, video and environmental data
… acoustic scattering models and an integrated set of field data. The accuracy of existing scattering models for fluid-like and elastic-shelled animals is determined by analysis of scattering data from individual animals in a laboratory tank. Results indicate that simple two-ray scattering models …
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Somatic condition, growth and distribution of Atlantic bluefin tuna (Thunnus thynnus) in the Gulf of Maine
… bluefin tuna may no longer be utilizing the Gulf of Maine as a foraging ground. A series of linear and additive models fitted to multiple fishery dependent datasets identified significant declines in the somatic condition of Atlantic bluefin tuna in the Gulf of Maine. Significant changes in …
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Life history dynamics of nudibranch sibling species in the genus Dendronotus in the Gulf of Maine
… Dendronotus frondosus (Ascanius, 1774) in the Gulf of Maine. A taxonomic review of adults with planktrophic larvae and those with lecithotrophic larvae revealed regular differences in radula morphology, and no predictable differences in the reproductive system. These data and previous data on a …
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Blooms of the toxic dinoflagellate Alexandrium fundyense in the Gulf of Maine : investigations using physical-biological model
Blooms of the toxic dinoflagellate Alexandriumfundyense are annually recurrent in the western Gulf of Maine (WGOM) and pose a serious economic and public health threat. Transitions between and vital rates within the life stages of A. fundyense are influenced by diverse environmental factors, and …
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Diagnosis of physical and biological controls on phytoplankton distribution in the Gulf of Maine-Georges Bank region
… model to the Sargasso Sea and the Gulf of Maine- Georges Bank region, respectively. The first model investigates the annual cycles of production and the response of the annual cycles to external forcing. The computed seasonal cycles compare reasonably well with the data. The spring …
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