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.

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The concentration of dissolved nitrogen inorganic forms were usually below the detection level (Table 1) in the epilimnion, and all three forms usually reached higher values below 10 m depth.

One year weekly dynamics of limnological conditions and phytoplankton in lake Bonilla, Costa Rica

Extreme pH value shifts were observed in Indian Lake during 2005, which showed the largest range between the epilimnion and hypolimnion (Table 3).

Physical and chemical limnology of three lakes within Hoosier National Forest

Its amplitude of water temperature was recorded about 10[degrees]C, difference between epilimnion and hypolimnion layers during thermocline, while it decreased to about 6.

Environmental assessment for benthic pigment structure in newly formed aquatic ecosystems at Abou-Zabal depressions-Egypt

El viento sobre la superficie de un lago genera turbulencia en la capa de mezcla, turbulencia que rapidamente transfiere momento al agua, hasta el epilimnion.

Effects of vortices in aquatic systems and its relation to chemistry, biology and geology/Efectos de los vortices en sistemas acuaticos y su relacion con la quimica, biologia y geologia/Efeitos dos vortices em sistemas aquaticos e sua relacao com a quimica, biologia e geologia

The eutrophic status of the water mass, the shallow depth of the basin and the high density of aquatic vegetation, allow an increase in oxygen concentrations in the epilimnion during the day and a fast reduction during the night.

Efecto de la vegetacion acuatica sobre la distribucion espacial de Grundulus bogotensis, Humboldt 1821 (Characiformes: Characidae)

All lakes are dimictic and a strong thermal stratification develops in summer, while the depth of the epilimnion stays rather constant at about 2-4 m.

Fossil pigments in surface sediments of some Estonian lakes/Fossiilsete pigmentide sisaldus Eesti jarvede pindmistes setetes

littoral zone [] epilimnion [] profundal zone [] limnetic zone

Envirothon: developing tomorrow's conservation leaders

Lake water nearest the surface is the warmest (in sum met anyway); this upper layer is called the epilimnion and the temperature is fairly uniform.

Land of lakes

Studies have shown that abundances are usually highest in the epilimnion in both Lake Ontario (Ojaveer and others 2001) and the Gulf of Finland (Krylov and others 1999).

The characteristics and potential ecological effects of the exotic crustacean zooplankter Cercopagis pengoi (Cladocera: Cercopagidae), a recent invader of Lake Erie (1)

The lake was stratified throughout the summer, with the boundary between the epilimnion and the hypolimnion at a depth of 1 to 2 meters.

Saturday paper presentations

We collected data to determine if the thermocline in a small freshwater system might influence sediment flux; if so, it suggests that nutrients may be more effectively recycled in the epilimnion than has been suspected previously.

A thermocline barrier to sedimentation in a small lake in the southeastern US

At the transition between the epilimnion and hypolimnion, the temperature of the water falls sharply (sometimes several degrees), and this transition is called the thermocline.