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Monomictic lakes are holomictic
Holomictic

Holomictic lakes are non-meromictic lakes . Although the permanent ice-cover of amictic lakes prevents mixing, they are also regarded as being holomictic....
 lakes that mix from top to bottom during one mixing period each year. Monomictic lakes may be subdivided into two types:

  1. Cold monomictic lakes are lakes that are covered by ice throughout much of the year. During their brief "summer" the surface waters remain at, or below, 4°C. The ice prevents these lakes from mixing in winter. During summer these lakes lack significant thermal stratification, and they mix thoroughly from top to bottom.






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    Monomictic lakes are holomictic
    Holomictic

    Holomictic lakes are non-meromictic lakes . Although the permanent ice-cover of amictic lakes prevents mixing, they are also regarded as being holomictic....
     lakes that mix from top to bottom during one mixing period each year. Monomictic lakes may be subdivided into two types:

    1. Cold monomictic lakes are lakes that are covered by ice throughout much of the year. During their brief "summer" the surface waters remain at, or below, 4°C. The ice prevents these lakes from mixing in winter. During summer these lakes lack significant thermal stratification, and they mix thoroughly from top to bottom. These lakes are typical of cold climate regions (e.g., much of the arctic).
    2. Warm monomictic lakes are lakes that never freeze, and are thermally stratified throughout much of the year. The density difference between the warm surface waters (the epilimnion
      Epilimnion

      Epilimnion is the top-most layer in a thermally stratified lake, occurring above the deeper hypolimnion. It is warmer and typically has a higher pH and dissolved oxygen concentration than the hypolimnion....
      ) and the colder bottom waters (the hypolimnion
      Hypolimnion

      The hypolimnion is the dense, bottom layer of water in a thermally-stratified lake. It is the layer that lies below the thermocline.Typically the hypolimnion is the coldest layer of a lake in summer, and the warmest layer during winter....
      ) prevents these lakes from mixing in summer. During winter the surface waters cool to a temperature equal to the bottom waters. Lacking significant thermal stratification, these lakes mix thoroughly each winter from top to bottom. These lakes are widely distributed from temperate to tropical climatic regions. One example is South Australia's Blue Lake
      Blue Lake (South Australia)

      The Blue Lake in Mount Gambier, South Australia is a large monomictic lake located in an extinct volcano maar associated with the Mount Gambier maar complex....
      , where the change in circulation is signaled by a striking change in colour.


    See also

    • Amictic
      Amictic

      Amictic lakes are holomictic lakes that are permanently ice-covered. They are restricted to very cold climates .ReferencesSee also...
    • Dimictic lake
      Dimictic lake

      Dimictic lakes are holomictic lakes that mix from top to bottom during two mixing periods each year. During winter they are covered by ice. During summer they are thermally stratified, with temperature-derived density differences separating the warm surface waters , from the colder bottom waters ....
    • Holomictic
      Holomictic

      Holomictic lakes are non-meromictic lakes . Although the permanent ice-cover of amictic lakes prevents mixing, they are also regarded as being holomictic....
    • Meromictic
      Meromictic

      A meromictic lake has layers of water which do not intermix. In ordinary, "holomictic" lakes, at least once each year there is a physical mixing of the surface and the deep waters....
    • Polymictic
      Polymictic

      Polymictic lakes are holomictic lakes that are too shallow to develop thermal stratification; thus, their waters can mix from top to bottom throughout the ice-free period....
    • Thermocline
      Thermocline

      The thermocline is a thin but distinct layer in a large body of fluid , in which temperature changes more rapidly with depth than it does in the layers above or below....