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Photo-chemical and Biochemical Degradation of Dissolved Organic Phosphorus in Lake Superior

When sunlight hits surface water, particular forms of oxygen are   released from chemical bondage. A microbial ecologist and a chemist   will explore the relationship between these oxygen forms and the   availability of phosphorus to organisms living in Lake Superior.   Their research will generate the first Great Lakes measurements   of "reactive oxygen species" (such as singlet oxygen and hydrogen   peroxide) that are produced when ultraviolet wavelengths interact   with organic matter in the water. The researchers will determine the   ability of these oxygen species to fragment organisms' RNA and DNA,   which can be abundant sources of phosphorus in aquatic systems. The   specific effect of reactive oxygens on the breakdown and   availability of dissolved organic phosphorous is unknown. However,   these reactions could be influenced by global change, affect carbon   balances, and contribute to lake eutrophication.    (eutrophication); (phosphorous); (algal bloom); (algal blooms);   (algae); (Lake Superior)

Status
In progress
Type
Project
Start Date
End Date
Researchers
James CotnerPrincipal Investigator
Associated with 2 projects
Kristopher McNeillResearcher
Associated with 3 projects
Agencies
Minnesota Sea Grant College Program $ 90,000.00USDEstimates

Funding 30 projects for a total of $2,568,917.00
Scope of Study
Field Investigation
Laboratory Investigation
Scale of Phenomena
Biochemical
Physical/Chemical
Impact of Pollutants
Nutrients, Including Phosphorus
Processes
Natural Ecological Processes
Natural Physical/Geological Processes
Lake Basin Connecting Channels
Lake Superior
State Province
Michigan
Annex Numbers
Control of Phosphorus
Research & Development
Annex 17
Physical and transformational processes affecting delivery of pollutants
General
Annex
  • Annex Numbers
    Annex Numbers
    Control of Phosphorus
    Research & Development
  • Annex 17
    Annex 17
    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.