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The influence of trace metals and Zebra Mussels on Microcystis growthand toxin production

Recent increases in the toxic cyanobacterial HAB Microcystis pose a  significant threat to water quality and resource utilization in the  Great Lakes.  Thus there is great need for the capacity to predict the  timing, movement and magnitude of Microcystis blooms in order to  minimize detrimental ecological and human health impacts.  While much  is known about cyanobacterial ecology, critical questions remain  regarding the environmental factors controlling the production of  microcystin for the Great Lakes.  Our objective is to investigate the  role of trace metals and zebra mussels on the growth of Microcystis  and their toxin production.  Our approach will be to: 1) develop flow  cytometry and fluorescence in situ hybridization (FISH) methods for  measuring the concentration of toxic Microcystis using microcystin  synthetase genes; 2) use these methods to cross validate the  quantitative PCR method already developed for quantifying toxic  Microcystis;  3) determine the binding capacity and bioavailable  levels of copper and zinc in areas of Saginaw Bay with and without  zebra mussels; and 4) determine if there is a relationship between the  concentration of toxic Microcystis, expression of microcystin  synthetase genes and the concentrations (bioavailable levels?) of  trace metals (mainly iron, copper and zinc) in the Bay.

Status
In progress
Type
Project
Start Date
End Date
Scope of Study
Field Investigation
Scale of Phenomena
Ecosystem
Impact of Pollutants
Exotic Species
Toxic Metals
Processes
Natural Ecological Processes
Lake Basin Connecting Channels
Lake Huron
Biology And Life History
Population Dynamics
Ecosystem Effects
Nutrient / Contaminant Cycles
Socio-economic Consideration and Analysis
Human Health Aspects
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
General
Aquatic Nuisance Species
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

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