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 “"harmful 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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Structure, Synthesis and Biological Activity of Harmful Algal Bloom Toxins from Karlodinium sp. and Exploration of Microbial Derived Natural Products
… Part I focuses 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 …
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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
… largest 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 …
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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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Large-scale dynamic observation planning for unmanned surface vessels
… fluorometer 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
… Earth Observation 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
… adaptation 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 …
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Population ecology of the dinoflagellate species Lingulodinium Polyedrum in southern California
… group that 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 …
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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
… for assistance 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
… Elevated 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 …
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Effects Of Nutrient Overload And Environmental Conditions On Algal Bloom Formation: A Case Study Of Water Sources In Eastern Kentucky
… Each 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 …
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Understanding spatial and temporal aquatic exposure and hazards of contaminants of emerging concern.
… persistent organic pollutants (POPs), and harmful algal bloom (HAB) toxins. First, I performed a critical review of existing literature to understand the global occurrence of PFASs within surface and groundwaters followed by a probabilistic hazard assessment utilizing environmental exposure …
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Ecotoxicology of marine biotoxins in bivalve shellfish
A small proportion of harmful algae produce toxins which are harmful to human health. Strict monitoring programmes are in place within Ireland and the EU to effectively manage risk to human consumers of shellfish species that have accumulated marine biotoxins in their tissues. However, little is …
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The fundamental role of spectral scattering in the ocean colour Phytoplankton Functional Type signal
… to the bulk optical water-leaving signal. Harmful Algal Bloom (HAB) conditions in the Southern Benguela and various inland waters of Southern Africa require continuous observation by satellite due to the potential for significant negative environmental impacts. Current oceanic bio-optical …
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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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Physiological and behavioral diagnostics of nitrogen limitation for the toxic dinoflagellate Alexandrium fundyense
… Of particular importance in this regard are harmful algal bloom (RAB) species such as the toxic dinoflagellate Alexandrium fundyense which typically inhabit coastal regions where they are not usually dominant. Within the Gulf of Maine, environmental factors, specifically nitrogen, are likely …
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Gelatinous zooplankton dynamics in Bantry Bay and the development of a harmful jellyfish forecast for the salmon aquaculture industry
… jellyfish, develop an early warning system for a harmful jellyfish species, Muggiaea atlantica, which has been implicated in high mortality events of farmed salmon, and investigate the ecology of gelatinous zooplankton in detail. A literature review was carried out to determine the scope and …
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Understanding the relationship between agricultural nutrients NPS, land management, and climate using distributed hydrologic models
… has led to severe environmental issues such as harmful algal bloom (HAB), a decline in biodiversity, and contaminated drinking water which can lead to serious threats to public health and critical stress to the agroecosystem because of the high fertilizer loss. To mitigate the excessive nutrient …
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