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    Using sediment flocculation to reduce the impacts of Chesapeake Bay Microcystis aeruginosa harmful algal blooms

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    No. of downloads: 1487

    Date
    2011
    Author
    Certner, Rebecca
    Cho, Haena
    Gallo, Natalya
    Gibbons, Alexander
    Kim, Christine
    Liu, Tina
    Miller, Hannah
    Parikh, Neelam
    Wooten, Matthew
    Advisor
    Sellner, Kevin
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    Abstract
    Harmful algal blooms (HABs) are proliferations of phytoplankton in marine ecosystems. Cyanobacteria, often referred to as algae, are one of the many microorganisms capable of reaching bloom abundances. In recent years, HABs have increased in prevalence in the Chesapeake Bay due to eutrophication from nutrient and pollution runoff into the watershed. Our research focused on the mitigation of HABs, specifically blooms of Microcystis aeruginosa, a cyanobacterium that blooms annually in the upper Chesapeake and its tributaries. Our mitigation approach used sediment-flocculant mixtures to remove cyanobacteria cells from the water column. We explored the environmental impact of our efforts and the potential for indigenous grass restoration by incorporating submerged aquatic vegetation (SAV) seeds into our mitigation technique. Based on our data regarding efficacy, cost, environmental safety, and public opinion, we suggest mixtures consisting of local sediments and the flocculant chitosan for use in mitigating M. aeruginosa HABs in the Chesapeake Bay.
    Notes
    Gemstone Team BREATHE (Bay Revitalization Efforts Against the Hypoxic Environment)
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    http://hdl.handle.net/1903/11384
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    DRUM is brought to you by the University of Maryland Libraries
    University of Maryland, College Park, MD 20742-7011 (301)314-1328.
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