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 43 for “"algal bloom"”.
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Impacts of developmental exposures to the harmful algal bloom toxin domoic acid on neural development and behavior
Harmful algal blooms (HABs) can produce potent neurotoxins that accumulate in seafood and affect human health. One HAB toxin of concern is domoic acid (DomA), a glutamate analog produced by the marine diatom Pseudo-nitzschia spp. Current regulatory limits are designed to prevent acute neurotoxicity …
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Impacts of developmental exposures to the harmful algal bloom toxin domoic acid on neural development and behavior
Harmful algal blooms (HABs) can produce potent neurotoxins that accumulate in seafood and affect human health. One HAB toxin of concern is domoic acid (DomA), a glutamate analog produced by the marine diatom Pseudo-nitzschia spp. Current regulatory limits are designed to prevent acute neurotoxicity …
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Spatio-temporal characterization of a complete algal bloom event using fluorescence spectroscopy in tandem with conventional physico-chemical methods
… in the frequency and geographic distribution of algal and cyanobacterial blooms has been observed over the last two decades, threatening marine and freshwater ecosystems. In situ fluorometers have been proposed for their potential to provide early warning of bloom development through the analysis …
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Structure, Synthesis and Biological Activity of Harmful Algal Bloom Toxins from Karlodinium sp. and Exploration of Microbial Derived Natural Products
… on the elucidation of toxins from harmful algal blooms (HAB). The HAB dinoflagellate <italic>Karlodinium veneficum</italic> produces a harmful suite of molecules identified as the karlotoxins (KmTx) that have been implicated in massive fish kills pan-globally. Nine new karlotoxin congeners …
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Effects Of Nutrient Overload And Environmental Conditions On Algal Bloom Formation: A Case Study Of Water Sources In Eastern Kentucky
… year, the owners of these ponds observe harmful algal blooms (HABs) that release toxins into the water, potentially limiting the use of these ponds. A pilot study in summer 2018 observed a harmful algal bloom (HAB) occurring in one pond in Madison Country that roughly correlated with a rise in …
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Insights Into Particulate Phosphorus Dynamics and toxic Algal Bloom Events From A 13-Year Sediment Trap Study In Santa Barbara Basin (CA)
… in some cases, facilitate the growth of harmful algal blooms (HABs). One such HAB is the diatom genus Pseudo-nitzschia, which can produce the neurotoxin domoic acid (DA) and has been responsible for numerous marine mammal and bird mortalities on the West Coast of the U.S. The goal of this …
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The use of operational harmful algal bloom monitoring systems in South Africa to assess long term changes to bloom occurrence & impacts for aquaculture
… environmental threats to aquaculture are harmful algal blooms (HABs), a natural ecological phenomenon often accompanied by severe impacts on coastal resources and local economies. There is a wide variety of potentially harmful blooming species in the region, with impacts resulting from both …
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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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Water Quality Modeling of Freshwater Diversions in the Pontchartrain Estuary
… algae concentrations in conjunction with the algal bloom probability model results produces an accurate prediction of algal bloom occurrences between 1990 and 2006. The model predicts that the addition of freshwater diversions into Maurepas swamp and increases to flow in the Bonnet Carré …
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Applications of Sensory Analysis for Water Quality Assessment
… in early February, 2015 and coincided with an algal bloom in the Dan River. The algal bloom was thought to be the cause, but after the bloom dissipated, odors persisted until May 2015. The second TandO in October, 2015 did not coincide with observed algal blooms. On February 2, 2014 …
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Internal Cycling in an Urban Drinking Water Reservoir
… 80,000 residents. Within the last several years, algal blooms have created stress to the local treatment facility. The objective of this study was to examine how P cycling from oxygen deprived bottom sediments affects the algal bloom productivity. As such, cores were retrieved from different water …
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Effects of Bloom-Forming Algae on Fouling of Integrated Membrane Systems in Seawater Desalination
Hydrodynamic shear applied to algal cells was detrimental to low-pressure filtration because of the release of highly-fouling organic matter. The highly fouling fraction was material large enough to be retained on a 0.22-microm microfilter but small enough that it was not removed by centrifugation …
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Predicting estuarine algal blooms using artificial neural networks
… a tributary of the Hawkesbury River, NSW. Algal blooms in this estuary are a regular feature of seasonal cycles and develop in response to non-periodic disturbances. Toxic algae, mostly Dinophyta, have led to fish kills and estuary closure. Most non-toxic algae present are from the division …
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Large-scale dynamic observation planning for unmanned surface vessels
… readings to observe and track a harmful algal bloom.
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The Impact of Radiometric Calibration Error on Earth Observation-supported Decision Making
… data: crop classification and Harmful Algal Bloom detection, and quantifies the impact of induced radiometric error on the final data product.
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Harmful algae, algal toxin, taste and odor control and mitigation in public water system
<p>“Recent years, harmful algal blooms occurrence has increased quickly in the surface water worldwide, which has become a concern for drinking water plants due to the ability of toxic algae (cyanobacteria) to produce cyanotoxins including microcystins (MCs), mainly MC-LR, cylindrospermopsin (CYN), …
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Climate impacts and adaptation in the Dungeness crab fishery: a social-ecological systems perspective
… to an unprecedented, coastwide harmful algal bloom in 2015, which led to the most extensive closures the California commercial fishery has ever seen. I quantified how fishers’ use of certain coping and adaptative strategies varied by vessel size class and geographic region; I then asked …
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Population ecology of the dinoflagellate species Lingulodinium Polyedrum in southern California
… accounts for two thirds of all known harmful algal bloom (HAB) species. This study explores the population ecology of Lingulodinium polyedrum (F. Stein) J.D. Dodge, a common bloom-forming dinoflagellate species in Southern California. Lingulodinium polyedrum is not considered a HAB species, …
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Multi-Modal Data Fusion, Image Segmentation, and Object Identification using Unsupervised Machine Learning: Conception, Validation, Applications, and a Basis for Multi-Modal Object Detection and Tracking
… in dust plume identification and harmful algal bloom identification. This is explored in Chapter 3. Lastly, conclusions are drawn and discussions about current and future work are presented.</p>
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Effect of future CO2 and temperature regimes on phytoplankton community composition, biomass and photosynthetic rates in the western English Channel
… pCO2 alone promoted dominance of the harmful algal bloom (HAB) species, Phaeocystis in spring and autumn, while the combination of elevated pCO2 and temperature promoted biomass of the HAB species, Prorocentrum minimum in autumn. The results indicate that experimental simulations of year 2100 …
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