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Lake Erie LaMP - A Primer on Phosphorus.
Phosphorus is an important nutrient that controls the amount of algae that will grow suspended in the water. Fewer algae will result in less food being available to other aquatic organisms in the food chain, including perch and walleye.
Report on United States Progress - Exotic Species.
Populations of native fish, including lake trout, walleye, yellow perch and whitefish are threatened by the establishment of these exotic species. Zebra mussels continue to profoundly affect the Great Lakes ecosystem.
Coastlines October 1999.
Washington is the fourth state in the nation to adopt a plan to minimize the introduction of nonnative aquatic nuisance species and eradicate alien species already present. These alien species can severely disrupt the habitat of important native species.
This report provides detailed technical and background information that provides the basis for the impairment conclusions recorded in the Lake Erie LaMP Status Report. Historical changes in total phytoplankton biomass and more.
State of the Lakes Ecosystem Conference '96: Nearshore Waters Status and Trends.
The nearshore areas of the Great Lakes are diverse physical habitats, exhibiting a range of morphometric features, current velocities, substrates, and aquatic vegetation.
1998 Great Lakes Guidance Preproposal Selection.
In November, 1997, GLNPO solicited preproposals for $4 million in projects to be funded during 1998. The requested funding categories were: habitat protection and restoration; contaminated sediments; pollution prevention; exotic species; and emerging issues.
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.
Mollusks (Phylum Mollusca) are found in marine, brackish, and fresh waters. Common methods of introduction include ballast water, aquarium releases, and accidental release from aquaculture facilities. Displacement by competition is the most frequently observed impact on native species. The most notable nonindigenous mussel introduction is the zebra mussel (Dreissena polymorpha), a native of eastern Europe. Since their initial introduction, they have proven to be a very costly pest to municipal and industrial water users. Additionally, zebra mussels can destroy entire colonies of native mussels by interfering with such basic functions as respiration, reproduction, feeding, growth, and movement.