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BIOACCUMULATION OF MICROCYSTIN IN THE BAY OF QUINTE FOOD-WEB

Increased water transparency, altered nutrient supply, and selective   filtration as a result of Dreissena invasion appear to favour   Microcystis in quiescent bays on Lakes Erie and Ontario. At   Deseronto, on the Bay of Quinte, mycrocystin, the toxin produced by   some strains of Microcystis, has been reported in concentrations   high enough to be cause for concern for drinking water. Microcystin   accumulates in filter-feeding invertebrates and damages renal and   hepatic function in vertebrate predators. It is imperative to   determine whether microcystin is accumulating in higher trophic   levels including Dreissena, gobies,zooplankton and commercially   important fish species including walleye and yellow perch. This   proposed project will examine aquatic food web organisms in the Bay   of Quinte to determine whether microcystin is bioaccumulating in the   food web. The Bay of Quinte has been the focus of several studies   including an ongoing study funded by the GLFC that is developing an   ecological model to help understand and make predictions about the   dramatic food-web changes occurring in the Bay of Quinte as a result   of exotic invertebrates and changing productivity. The Ontario   Ministry of the Environment has funded the University of Waterloo    to conduct a 2 year study to examine environmental factors   regulating Microcystis abundance and microcystin production and   identification of toxic and non-toxic genotypes of the   cyanobacterial community in the Bay of Quinte. The proposed project   will build on the Bay of Quinte studies mentioned above by   determining whether micorcystin bioaccumulates in   the food-web.    (microcystin); (microcystis); (cyanobacteria); (eutrophication);   (HAB); (HAB's); (HABs); (harmful algal bloom); (harmful algal   blooms); (algal bloom); (algal blooms)

Status
In progress
Type
Project
Start Date
End Date
Scope of Study
Field Investigation
Laboratory Investigation
Scale of Phenomena
Ecosystem
Processes
Natural Ecological Processes
Lake Basin Connecting Channels
Lake Ontario
State Province
Ontario
Ecosystem Effects
Nutrient / Contaminant Cycles
Annex Numbers
Research & Development
Annex 17
Impact of water quality and AIS on fish and wildlife populations and habitats
Mass transfer of pollutants between GL Basin Ecosystem components
Physical and transformational processes affecting delivery of pollutants
General
Annex
  • Annex Numbers
    Annex Numbers
    Research & Development
  • Annex 17
    Annex 17
    Impact of water quality and AIS on fish and wildlife populations and habitats
    Mass transfer of pollutants between GL Basin Ecosystem components
    Physical and transformational processes affecting delivery of pollutants

The Great Lakes - St. Lawrence Research Inventory is an
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up-to-date information about research projects in the
Great Lakes - St. Lawrence Region.