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 24 for “"Bloom dynamics"”.
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Physical controls on spring bloom dynamics in the Irminger Basin, North Atlantic
… with the relatively short spring phytoplankton bloom. Quantifying the bloom is essential to understanding export production and energy transfer to higher trophic levels. This study focuses on the physical forcing controlling the spring bloom in the Irminger Basin (IB), situated between Greenland …
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Drivers of Reservoir Phytoplankton Bloom Dynamics in Changing Nutrient Regimes, Assessed Through Long-Term Field Data and Short-Term Experiments.
North Carolina State University Theses Plant & Microbial Biology.
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Pseudo-nitzschia in the Gulf of Maine: investigating bloom dynamics, species introduction, and climate change implications with observations and models
The apparent global increase in harmful algal blooms (HABs) includes Pseudo-nitzschia blooms in the Gulf of Maine, where shellfishery closures can cost millions of dollars. Temperatures in the gulf are warming, which can affect the severity of some HABs. Yet Pseudo-nitzschia in the region are …
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Pseudo-nitzschia in the Gulf of Maine: investigating bloom dynamics, species introduction, and climate change implications with observations and models
The apparent global increase in harmful algal blooms (HABs) includes Pseudo-nitzschia blooms in the Gulf of Maine, where shellfishery closures can cost millions of dollars. Temperatures in the gulf are warming, which can affect the severity of some HABs. Yet Pseudo-nitzschia in the region are …
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Emiliania huxleyi and climate change: a genetic and biogeographic investigation of bloom dynamics for a key phytoplankton species in the global carbon cycle
… the global ocean and capable of forming large blooms with significant effects on the global carbon cycle. Developing our understanding of E. huxleyi ecology is necessary in order to better quantify E. huxleyi’s role in the present carbon cycle, and to predict its role in the future carbon cycle …
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Grazing on <i>Synechococcus spp.</i> by the Red-Tide Dinoflagellate <i>Karenia brevis</i>: Implications for Bloom Dynamics in the Gulf of Mexico
… and acute respiratory irritation in humans. Bloom initiation and maintenance have been linked to the physical environment as well as various nutrient input mechanisms. To date, efforts to quantify nitrogen (N) sources fueling <em>K. brevis</em> blooms in the GOM have not included mixotrophic …
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Multi-sensor mooring development and its use to characterise physical processes relevant to harmful algal bloom dynamics in the St Helena Bay area, South Africa
Harmful algal blooms (HABs), typically attributed to dinoflagellate species, occur along the west coast of South Africa, particularly during the latter part of the upwelling season. As part of the Benguela Current Large Marine Ecosystem (BCLME) programme, a buoy has been developed locally for …
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Cyanobacteria harmful algal blooms in South Louisiana estuaries : a synthesis of field research, management implications, and outreach
… look at a field research study of phytoplankton bloom dynamics; management implications for cyanobacteria entering estuaries; and an outreach effort in relation to residents knowledge about cyanobacteria and algae. The first study compared the phytoplankton bloom dynamics, specifically CyanoHABs, …
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Dynamics and impacts of toxic Alexandrium catenella blooms in the Pacific Arctic
… is facilitating the emergence of harmful algal blooms (HABs) in polar waters, posing a significant threat to northern communities and ecosystems. Of particular concern is the dinoflagellate Alexandrium catenella, a cystforming species that produces a potent suite of paralytic shellfish toxins …
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Global Trends in Merged Ocean Colour Data and Correction of Inter-Mission Inconsistencies
… in ocean colour variables and phytoplankton bloom timings in a changing climate using merged ocean colour data. However, the significant time series inconsistencies that arise from combining ocean colour data from different missions within merged datasets must first be addressed. Although …
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Marine algal virus communities along Southern African coasts
… around the tip of South Africa. Algal blooms are known to proliferate predominantly off the nutrient - rich west coast, however, sporadic inshore upwelling on the east coast can also illicit these events. In addition, solar salt - pans located on the coast that draw their water from the …
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Drivers And Dynamics Of Harmful Algal Blooms: Understanding Nitrogen Fixation And Bloom Composition In Minnesota Temperate Lakes
… Among these microbial communities, harmful algal blooms (HABs), dominated by cyanobacteria capable of producing toxins, have emerged as a growing environmental concern due to their impacts on water quality, ecosystem services, and human health. Historically, phosphorus has been considered the …
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Defining the ecological and physiological traits of phytoplankton across marine ecosystems
… ecology, physiology, and, ultimately, bloom dynamics has been a central problem in the field of biological oceanography for the past century. Molecular approaches enable the direct examination of species-specific metabolic profiles in mixed, natural communities, a task which was …
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Molecular insights into the niche of harmful brown tides
Recurrent brown tide blooms caused by the harmful alga Aureococcus anophagefferens have decimated coastal ecosystems and shellfisheries along the Eastern U.S. and South Africa. The exact mechanisms controlling bloom formation, sustenance, and decline are unclear, however bottom-up factors such as …
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FLORIDA RED TIDES FROM A SCIENTIFIC AND PUBLIC INFORMATION PERSPECTIVE
… of G. breve. For example, the mechanism by which blooms begin is still unknown. The seed bed hypothesis was described in the 1970s, but the cyst stage of the life cycle has not yet been confirmed. Also, the role of other spatially and temporally associated bloom species such as Trichodesmium was …
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Phytoplankton Response to South Louisiana Crude Oil Exposure: Determining Impacts at Individual, Community, Toxin Production, Enzymatic-Activity and Gene-Expression Levels
… and pollution on phytoplankton ecology and bloom dynamics in the GoM. These datasets contribute substantially to existing scientific knowledge about the region and provide baseline information for subsequent research efforts that seek to further understand the impact of oil on the marine …
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Spatial and temporal distribution of a marine microbial parasite, Syndiniales MALV I and II, within St Helena Bay
… hosts. These organisms play an important role in bloom dynamics, are suspected to terminate algal blooms, and contribute significantly to carbon fluxes, an important process required to lock away greenhouse gases. The study aims to investigate the spatial and temporal distribution of MALV I and II …
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Defining the ecological and physiological traits of phytoplankton across marine ecosystem
… ecology, physiology, and, ultimately, bloom dynamics has been a central problem in the field of biological oceanography for the past century. Molecular approaches enable the direct examination of species-specific metabolic profiles in mixed, natural communities, a task which was …
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Molecular insights into the niche of harmful brown tides
Recurrent brown tide blooms caused by the harmful alga Alureococcus anophagefferens have decimated coastal ecosystems and shellfisheries along the Eastern U.S and South Africa. The exact mechanisms controlling bloom formation, sustenance, and decline are unclear, however bottom-up factors such as …
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An investigation of the growth and feeding responses of oligotrich ciliates to food types and concentrations : an approach to assessing the potential of marine planktonic ciliate blooms
… clonal ciliate populations on short term algal blooms. Numerical and functional responses (growth and grazing rates with varied food concentration)were established for 5 marine planktonic ciliates and were used in a model to examine predator-prey dynamics of ciliates and 8 Am algae. The ciliates …
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