epilimnion


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epilimnion

[‚ep·ə′lim·nē‚än]
(hydrology)
A fresh-water zone of relatively warm water in which mixing occurs as a result of wind action and convection currents.
References in periodicals archive ?
Extreme pH value shifts were observed in Indian Lake during 2005, which showed the largest range between the epilimnion and hypolimnion (Table 3).
become stratified in the spring, developing two layers based on temperature; the epilimnion is the upper, warmer, well-illuminated zone that overlies the deeper, cooler, and darker hypolimnion which, in the case of most eutrophic lakes, is rapidly depleted of oxygen.
The mean annual temperature ranges in the epilimnion, metalimnion, and hypolimnion of Boulder Basin of Lake Mead are between 12-27[degrees]C, 12-18[degrees]C, and 12-12.
Samples for nutrient analyses were collected from the epilimnion at 0.
However, measures must be taken to ensure that the oxygen bubbles formed are small enough to dissolve completely before reaching the epilimnion or destratification can occur.
Therefore, as the lake water is stratified nearly all the year round and the water in the epilimnion is oxygen-depleted, it seems that the conditions in the deeper water layers are unfavourable for the bottom fauna and their role in the early diagenesis is modest.
Plankton from the epilimnion of ETL showed high APA in the community, yet ELF stained only Ceratium hirundinella (C.
In case of organic rich sediment, the decomposition of the accumulated organic matter in the hypolimnion tends to decrease the pH, thus influencing dissolution of CaCO3, which settles from the epilimnion (Schlesinger, 1991; Dean, 1999).
Maximum temperature difference ([DELTA]T) between the epilimnion and the hypolimnion was attained on 15 June 2006, at all but the deepest location (#6), where maximum AT of 1.