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A Management Model to Link Coastal Water Quality and Land Use

Recent work has allowed researchers to determine optimum phosphorus   concentrations in the Lake Michigan coastal zone necessary to result   in significant reduction in the abundance of the nuisance alga,   Cladophora sp. The challenge now is to determine if and how these   target concentrations can be achieved. In particular, there is a   need to define river phosphorus loading targets that will lead to   the desired nearshore P concentration. Researchers propose to define   the relationship between river phosphorus load and coastal Lake   Michigan phosphorus concentration by applying a combined   hydrodynamic/nutrient cycling model to the Milwaukee coastal region.   In addition to helping to determine optimal river P loads, the model   will allow researchers to determine the time scale over which the   coastal zone will respond to any change in river P loads.   Researchers will also collaborate with an agricultural research/   extension program - the Discovery Farms program - to assess the   relationship between agricultural land management and river P loads,   so that they can better understand the relationship between   agriculture and coastal phosphorus concentrations, and determine   whether current coastal management objectives and farm management   objectives are compatible.    This project will have two primary outcomes:   1) To produce a calibrated hydrodynamic/biogeochemical model that   describes the cycling of phosphorus in the Lake Michigan nearshore   zone and, when combined with an existing Cladophora model, defines   the relationship between river P loading and Cladophora growth. This   will allow managers to set specific targets for river P loading to   Lake Michigan.   2) An improved understanding of how farming practices influence   river P loads. When combined with the coastal model, this will   strengthen the understanding of the relationship between farming   practices and coastal water quality.    (phosphorous); (phosphorous loading); (Lake Michigan); (nearshore);   (Cladophora); (algal bloom); (algal blooms); (eutrophication); (land   use)

Status
In progress
Type
Project
Start Date
End Date
Researchers
Harvey BootsmaPrincipal Investigator
Associated with 1 projects
Agencies
Wisconsin Coastal Management Program $ 72,664.00USDEstimates

Funding 5 projects for a total of $317,825.00
Scope of Study
Field Investigation
Scale of Phenomena
Biochemical
Landscape
Physical/Chemical
Impact of Pollutants
Nutrients, Including Phosphorus
Land Use and Habitat
Shoreline
Lake Basin Connecting Channels
Lake Michigan
State Province
Wisconsin
Annex Numbers
Control of Phosphorus

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