Some Lake Ontario Temperatures

Integrated Ecosystem Assessment: Lake Ontario Water Management

BACKGROUND Ecosystem management requires organizing, synthesizing, and projecting information at a large scale while simultaneously addressing public interests, dynamic ecological properties, and a continuum of physicochemical conditions. We compared the impacts of seven water level management plans for Lake Ontario on a set of environmental attributes of public relevance. METHODOLOGY AND FIN...

Isomers of dechlorane plus in Lake Winnipeg and Lake Ontario food webs.

The extent of bioaccumulation of the syn- and anti-isomers of Dechlorane Plus (DP) is assessed in archived food web samples from Lake Winnipeg and Lake Ontario. Concentrations of the isomers were determined using purified analytical solutions of individual isomers as opposed to the technical mixture. The syn-isomer was consistently detected in all samples from both lakes; the anti-isomer was de...

Ecological Indicators and Sustainability of the Lake Ontario Ecosystem

Molecular Characterization of Potential Geosmin-producing Cyanobacteria from Lake Ontario

Geosmin is an odorous secondary metabolite produced by some cyanobacteria during growth and released from the cells. Little is known about the biosynthesis of geosmin and the gene(s) required for its production have not been characterized. During late August and early September geosmin episodes due to planktonic cyanobacteria frequently occur in the northwest basin of Lake Ontario waters result...

Selenium accumulation in sea ducks wintering at Lake Ontario.

Numbers of wintering sea ducks, including buffleheads (Bucephala albeola; BUFF), common goldeneyes (Bucephala clangula; COGO), and long-tailed ducks (Clangula hyemalis; LTDU), increased substantially at Lake Ontario after Dreissenid mussels (Dreissena bugensis and D. polymorpha) colonized the Great Lakes. Invertebrates, including Dreissenid mussels, are major diving duck prey items that can tra...