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Full-Text Articles in Physical Sciences and Mathematics
Filtration Rates Of The Zebra Mussel (Dreissena Polymorpha) On Natural Seston From Saginaw Bay, Lake Huron, David L. Fanslow, Thomas F. Nalepa, Gregory A. Lang
Filtration Rates Of The Zebra Mussel (Dreissena Polymorpha) On Natural Seston From Saginaw Bay, Lake Huron, David L. Fanslow, Thomas F. Nalepa, Gregory A. Lang
United States Department of Commerce: Staff Publications
Filtration rates of the zebra mussel (Dreissena polymorpha) on natural seston from two different regions in Saginaw Bay were determined on a monthly basis from April to October in 1992 and 1993. The two regions represent contrasting trophic conditions, with the inner bay more eutrophic than the outer bay. Mean filtration rate was 16.2 mL/mg/h (range 4.0 to 40.7 mL/mg/h) over the entire 2-year period. Filtration rates on seston from the inner bay were significantly lower than rates on seston from the outer bay in 1992, but no differences were apparent in 1993. Lower rates were attributed to …
Initial Colonization Of The Zebra Mussel (Dreissena Polymorpha) In Saginaw Bay, Lake Huron: Population Recruitment, Density, And Size Structure, Thomas F. Nalepa, James A. Wojcik, David L. Fanslow, Gregory A. Lang
Initial Colonization Of The Zebra Mussel (Dreissena Polymorpha) In Saginaw Bay, Lake Huron: Population Recruitment, Density, And Size Structure, Thomas F. Nalepa, James A. Wojcik, David L. Fanslow, Gregory A. Lang
United States Department of Commerce: Staff Publications
The various life stages of the zebra mussel (Dreissena polymorpha) were examined during the initial years (1991-93) of the mussel's invasion into Saginaw Bay, Lake Huron. Yearly trends in densities of larvae, newly-settled juveniles, and adults were poorly related. Larval densities were lowest in 1991 and increased each year, but the number of settled juveniles was highest in 1991. Adults increased between 1991 and 1992 and then declined in 1993. Mean adult densities at sites with hard substrates were 11,700,33,200, and 4,1001m2 in each of the 3 years, respectively. Year-to-year variation at individual sites was high and likely …
Nutrient Changes In Saginaw Bay, Lake Huron, After The Establishment Of The Zebra Mussel (Dreissena Polymorpha), Thomas H. Johengen, Thomas F. Nalepa, Gary L. Fahnenstiel, Greg Goudy
Nutrient Changes In Saginaw Bay, Lake Huron, After The Establishment Of The Zebra Mussel (Dreissena Polymorpha), Thomas H. Johengen, Thomas F. Nalepa, Gary L. Fahnenstiel, Greg Goudy
United States Department of Commerce: Staff Publications
Concentrations of particulate and dissolved nutrients in Saginaw Bay, Lake Huron, were examined relative to zebra mussel colonization which occurred summer 1991. The magnitude and spatial pattern of changes indicate that mussels had a significant impact on nutrients in Saginaw Bay. Annual means for total suspended solids, particulate organic carbon, particulate phosphorus, and particulate silica in the inner bay were significantly lower in 1992 and 1993 (post-zebra mussel) than in 1991 (pre-zebra mussel). Annual means decreased from 11.5 mg L-1, 1.45 mg C L-1 (121 µM), 20.4 µg P L-1(0.66 µM), and 1.52 mg SiO …