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  • Analytical Chemistry and Spectroscopy  (1)
  • Food security  (1)
  • 1
    ISSN: 0951-4198
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: A combined liquid chromatography/mass spectrometry (LC/MS) method using ion-spray ionization is described for the sensitive determination of okadaic acid and dinophysistoxin-1, the principal toxins implicated in cases of diarrhetic shellfish poisoning. The method is used to confirm the presence of okadaic acid in a culture of the dinoflagellate species Prorocentrum concavum and in natural populations of dinoflagellates from eastern Canadian waters. Several analogues of the toxin have also been detected. Quantitative results are comparable to those obtained by high performance liquid chromatography with fluorescence detection. With slight modifications, the LC/MS method is also used to analyse the fluorescent anthrylmethyl ester of okadaic acid. Preliminary tandem mass spectrometric results, obtained using fast-atom bombardment ionization, are presented for okadaic acid.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
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  • 2
    Publication Date: 2022-09-21
    Description: • Harmful Algal Blooms (HABs) result from noxious and/or toxic algae that cause direct and indirect negative impacts to aquatic ecosystems, coastal resources, and human health. • HABs are present in nearly all aquatic environments (freshwater, brackish and marine), as naturally occurring phenomena. • Many HABs are increasing in severity and frequency, and biogeographical range. Causes are complex, but in some cases can be attributed to climate change and human impacts, including eutrophication, habitat modification, and human- mediated introduction of exogenous species. • There is no plan, and nor realistic possibility, to eliminate HABs and/or their depend-ent consequences. Decades of research and monitoring have, however, improved our understanding of HAB events, leading to better monitoring and prediction strate-gies. • HABs are a worldwide phenomenon requiring an international understanding leading ultimately to local and regional solutions. Continued progress in research, management, mitigation, and prediction of HABs benefits from international coordination. In this spirit, the international community has developed programmes sponsored by the Intergovernmental Oceanographic Commission (IOC) and Scientific Committee on Oceanic Research (SCOR) to coordinate international HAB research, framework activities, and capacity building. • HABs are recognized as one facet of complex ecosystem interactions with human society. HAB research, monitoring, and management must be closely integrated with policy decisions that affect our global oceans. • New initiatives, such as GlobalHAB sponsored by IOC and SCOR, will continue to provide the mechanisms to further understand, predict, and mitigate HABs. Research, management, and mitigation efforts directed towards HABs must be coordinated with other local, national, and international efforts focused on food and water security, human and ecosystem health, ocean observing systems, and climate change.
    Description: OPENASFA INPUT For bibliographic purposes this document should be cited as: R.M. Kudela et al. 2015. Harmful Algal Blooms. A Scientific Summary for Policy Makers. IOC/UNESCO, Paris (IOC/INF-1320).
    Description: Published
    Description: Non Refereed
    Keywords: HAB ; Harmful Algae Bloom ; Noxious algae ; Toxic algae ; Aquatic ecosystems ; Coastal resources ; Human health ; Climate Change ; Human impact ; Policy making ; Food security ; Water security
    Repository Name: AquaDocs
    Type: Report
    Format: 20pp.
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