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A spatio-temporal study of methylmercury biogeochemistry in wetlands of the southern Lake Michigan watershed

Principal Investigator: Robert Hudson
Affiliation: University of Illinois Urbana-Champaign
Initiation Date: 2006
  • Measure the levels of total mercury (Hg) and methylmercury (MeHg) in the surface waters of wetlands across the Grand Calumet region of northwestern Indiana
  • Measure the concentrations of total and MeHg in wetland sediments – the main repositories for legacy Hg contamination in these wetlands
  • Measure the concentrations of total and MeHg in porewaters of wetland sediments – the main route for MeHg transport from the sediments to the overlying waters – in the region
  • Assess the MeHg levels in fish from wetlands with permanent open water

Evaluating Asian carp colonization potential and impact in the Great Lakes

Principal Investigator: Walter Hill
Affiliation: Illinois Natural History Survey
Initiation Date: 2006
  • Develop a predictive model of Asian carp consumption and growth in the Great Lakes using a bioenergetics approach
  • Test model predictions with growth and consumption experiments in mesocosms
  • Predict where in the Great Lakes Asian carp are likely to survive by feeding on plankton
  • Provide initial estimates of the potential impact of Asian carp on Great Lake plankton communities

Alteration of Lake Michigan benthic communities by the invasive colonial hydroid, Cordylophora caspia: effects on fish prey

Principal Investigator: Nadine Folino-Rorem
Affiliation: Wheaton College
Initiation Date: 2006
  • Document the locations and diets of the invasive, PontoCaspian colonial hydroid, Cordylophora caspia in southern Lake Michigan
  • Assess the feeding habits of C. caspia
  • Determine whether the distribution of C. caspia is related to the presence of Dreissena polymorpha or D. bugensis as substrates

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