Skip to main content
hyi
Banner
banner
bn

Biologically Available Iron and Ultraviolet Radiation Control of Noxious Cyanobacteria in Freshwaters

This research will explore the relationship between Cyanobacteria   (algal) blooms in eutrophic surface waters, biologically available   iron, and ultraviolet radiation (UVA and UVB). The specific   mechanisms underlying Cyanobacterial dominance in eutrophic waters   is not well understood. Large, colonial Cyanobacteria (algal) blooms   in eutrophic surface waters are a public health issue because many   strains produce potent toxins. Blooms also produce geosmin which   alters the taste and odour of drinking water, necessitating the   installation of expensive systems to improve taste and odour.     Our research will test our hypothesis that the increased iron   availability that results when waters become oxygen-poor, stimulates   Cyanobacterial growth and that ultraviolet radiation (UVA and UVB)   is essential to maintaining the blooms because it favours   Cyanobacteria. Study sites include Hamilton Harbour, Bay of Quinte,   Experimental Lakes Area in northwestern Ontario, and 3 inland lakes   in the Muskoka region of Ontario.    (cyanobacteria); (HAB); (HAB's); (HABs); (harmful algal bloom);   (harmful algal blooms); (algal bloom); (algal blooms); (blue-green   algae); (eutrophication); (radiation); (drinking water);   (restrictions on drinking water); (human health); (microcystin);   (microcystis); (iron); (nutrient loading); (iron loading)

Status
In progress
Type
Project
Start Date
End Date
Researchers
Lewis MolotPrincipal Investigator
Associated with 2 projects
Susan WatsonResearcher
Associated with 1 projects
Agencies

Funding 2 projects for a total of $315,400.00
Scope of Study
Field Investigation
Laboratory Investigation
Scale of Phenomena
Biochemical
Physical/Chemical
Impact of Pollutants
Nutrients, Including Phosphorus
Radiation
Processes
Natural Ecological Processes
Natural Physical/Geological Processes
Lake Basin Connecting Channels
Lake Ontario
Out of Basin
State Province
Ontario
Purpose of Project
Loadings Determination
Region Being Monitored
Near and OpenShore Waters
Resource Being Monitored
Habitat
Human Health
Hydrologic / Hydrometric / Climatic
Societal/Surface Water
Beneficial Use Impairment Assessments
Eutrophication or Undesirable Algae
Restrictions on Drinking Water Consumption or Taste and Odour Problems
Annex Numbers
Control of Phosphorus
Remedial Action Plans and Lakewide Management Plans
Research & Development
Annex 17
Cause-effect inter-relationships of productivity and ecotoxicity
General
Monitoring
Annex
  • Annex Numbers
    Annex Numbers
    Control of Phosphorus
    Remedial Action Plans and Lakewide Management Plans
    Research & Development
  • Annex 17
    Annex 17
    Cause-effect inter-relationships of productivity and ecotoxicity

The Great Lakes - St. Lawrence Research Inventory is an
interactive, Internet-based, searchable database created as a tool to collect and disseminate
up-to-date information about research projects in the
Great Lakes - St. Lawrence Region.