Similar to the stratifying temperature gradient of any given lake, dissolved oxygen also exhibits a stratified nature that is directly influenced by the lake thermocline, and thus season. Dissolved oxygen refers to the individual molecules of oxygen taken up from the atmosphere and in some areas where groundwater discharge occurs. (more…)

Turnover is a phenomenon that occurs in terrestrial bodies of water, such as lakes and ponds, in which the water near the surface of the lake (epilimnion) is replaced with the water near the bottom of the lake (hypolimnion) to establish a homogenous mixture. Lake turnover occurs during both the fall and spring when the thermocline (temperature gradient relative to lake depth) is nearly uniform throughout the lake. (more…)