Relationship Between Thermal Stability and Summer Oxygen Depletion in a Prairie Pothole Lake
- 1 September 1980
- journal article
- research article
- Published by Canadian Science Publishing in Canadian Journal of Fisheries and Aquatic Sciences
- Vol. 37 (9), 1433-1438
- https://doi.org/10.1139/f80-183
Abstract
Periods of summer oxygen depletion (summerkill), occurring in shallow prairie lakes, are dependent on the collapse of algae blooms but are not an obligatory result of the collapse. A period of thermal instability following this bloom collapse, or coincidental with it, is a necessary requirement. Wind stress and night-time air temperature are the principal factors determining the degree of thermal stability. These findings explain the speed with which oxygen depletion can occur, that the occurrence of algal biomass collapses without severe oxygen depletion (partial collapses), and the correlation between the occurrence of periods of lake oxygen depletion and changing weather conditions.Key words: lake, summerkill, anoxia, mixing, oxygen depletion, thermal stability, weather, AphanizomenonThis publication has 3 references indexed in Scilit:
- An empirical method for predicting trout survival in Canadian prairie lakesAquaculture, 1977
- Seasonal Mortality of Rainbow Trout (Salmo gairdneri) Planted in Small Eutrophic Lakes of Central CanadaJournal of the Fisheries Research Board of Canada, 1976
- Physiological Changes During the Course of Blooms of Aphanizomenon flos-aquaeJournal of the Fisheries Research Board of Canada, 1976