Articles | Volume 21, issue 6
Research article
25 Mar 2024
Research article |  | 25 Mar 2024

Thermal stratification and meromixis in four dilute temperate zone lakes

Elizabeth D. Swanner, Chris Harding, Sajjad A. Akam, Ioan Lascu, Gabrielle Ledesma, Pratik Poudel, Heeyeon Sun, Samuel Duncanson, Karly Bandy, Alex Branham, Liza Bryant-Tapper, Tanner Conwell, Omri Jamison, and Lauren Netz

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Cited articles

Anderson, R. Y., Dean, W. E., Bradbury, P., and Love, D.: Meromictic Lakes and Varved Lake Sediments in North America, 19 pp., 1985. 
Baker, A. and Brook, A.: Optical density profiles as an aid to the study of microstratified phytoplankton populations in lakes, Arch. Hydrobiol., 69, 214–233, 1971. 
Balk, D., Graetz, A., Morantes, A., and Olson, D.: Itasca Biological Station Student Report 2485: Comparative investigation of zooplankton diel vertical migration patterns in Arco and Deming Lake: the effect of predation, University of Minnesota, 24 pp., 2007. 
Barkow, M. and Habedank, T.: Itasca Biological Station Student Report 1906: A Limnological study of Demming Lake, 1990. 
Barnes, P., Halpern, T., and Meier, T.: Itasca Biological Station Student Report 1157: A limnological investigation of Arco Lake, University of Minnesota, Itasca Biological Station, 47 pp., 1976. 
Short summary
Four lakes were thought to be permanently stratified. Years’ worth of data indicate only one lake is permanently stratified. Strong temperature gradients keep it stratified – unusual for a lake in a temperate climate. The lake has elevated oxygen concentrations within the temperature gradient. Rapid development of the gradient in the spring traps oxygen, and oxygen production by photosynthetic organisms during the summer adds more.
Final-revised paper