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Earth Vision, Study of Parameter Sensitivity in Yellow Perch, and the Effect of the Zebra Mussel on Contaminant Transfer.
Hydrophobic chemicals such as polychlorinated biphenyls (PCBs) and polyaromatic hydrocarbons (PAHs) adsorb to particles suspended in the water column (e.g. phytoplankton), which are then filtered from the water column by zebra mussels. The zebra mussel has the potential to impact the cycling of contaminants through the food web.
A Coupled Benthic-Pelagic Ecosystem Model for Saginaw Bay: Project Period: 9/1/99 to 8/31/00.
Expected outcomes of the work will be (1) a better quantitative understanding of ecosystem stress-response relationships and benthic-pelagic coupling in the Saginaw Bay ecosystem and (2) forecasts of possible future states of the bay as a result of changes in external stressors such as nutrient loads and zebra mussel densities and size structure.
Lake Michigan Mass Balance Study.
Office of Water. Develop New Modules - Upper food web (fish) bioenergetics and population dynamics and coupling to lower food web - benthic production and coupling to pelagic modules.
Zebra mussels have colonized the nearshore zone in much of the Great Lakes, but the environmental ramifications of logarithmic population growth have not yet been observed everywhere. Zebra mussels voraciously filter plankton and might be expected to change the structure of plankton communities and thus the structure of the aquatic food web. The study offers the opportunity to examine trophic structure and food web linkages within coastal wetlands that span the nutrient enrichment gradient of Green Bay. Likewise, the trophic structure of coastal wetlands can be compared with the off-shore pelagic food web.
Great Lakes Project Summaries 1998.
In FY 99, GLNPO looked for projects in the areas of Contaminated Sediments, Pollution Prevention and Reduction (pursuant to the Binational Toxics Strategy), Habitat (Ecological) Protection and Restoration, Exotic Species, and Emerging Issues.
Great Lakes Atlas - 3rd Edition.
The largest categories of impact are pollution, habitat loss, and exotic species. Phosphorus concentrations in the lakes are similarly below maximum levels in the upper lakes and at or near maximum concentrations in Lakes Ontario and Erie.