| I examined responses of cisco (Coregonus artedi) to hypolimnetic oxygenation in Amisk Lake during the summers of 1989-1992. One basin of this double-basined eutrophic lake was oxygenated, whereas the second basin, and the nearby, untreated Baptiste Lake, served as reference systems. Dissolved oxygen (DO) concentrations in the hypolimnion of both basins of Amisk Lake increased during treatment but were higher in the treated basin than in the reference basin. Hypolimnetic DO in the treated basin remained above concentrations avoided by cisco (... |
