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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In early August 2012, air temperatures declined and hypolimnion temperatures converged with those of the epilimnion, eliminating the thermal stratification that had inhibited mixing between the upper and lower zones of the lake (Fig.

Seasonal Variations in the Limnology of Noell Lake in the Western Canadian Arctic Tracked by In Situ Observation Systems

During mixing events in 2015 and 2016, there was a decrease in pH in the epilimnion. Specific conductivity fluctuated between 116 and 190 [micro]Si/cm, with lower values in the epilimnion, and a clear chemocline at 20 m depth, which however became deeper with time ([F.sub.1,21] = 30.8; p = 0.00002).

Revisiting the limnology of Lake Rio Cuarto, Costa Rica, thirty-five years later/Revisitando la limnologia del lago Rio Cuarto, Costa Rica, treinta y cinco anos despues

Therefore in the hypothetical scenario presented here, the DBL thickness was estimated to be 0.26 [+ or -] 0.05 mm, covering a wide range of flow regimes, from fast flowing water to slow moving lake epilimnion [6].

Estimation of measurement uncertainties for the DGT passive sampler used for determination of copper in water

Because most phytoplankton taxa have a higher specific mass than water, all nonmotile and negatively buoyant taxa tend to sink out of the epilimnion with time [23].

Nonlinear analysis in a nutrient-algae-zooplankton system with sinking of algae

For example, dissolved oxygen levels ranged from 0.63 mg [L.sup.-1] (in the hypolimnion) to 9.20 mg [L.sup.-1] (in the epilimnion), but over the season from 3.09 to 7.03 mg [L.sup.-1].

Occurrence of Cladocera and the genetic diversity of Daphnia cucullata in the pelagic zone of Latvian salmonid lakes

In this way,great variation in their diversity is observed, according to the trophic status, seasonality (BUOSI et al., 2011; GOMES; GODINHO, 2003; PAULETO et al., 2009), or even among compartments of the same environment, such as epilimnion and hipolimnion (FINLAY; ESTEBAN, 1998; ZINGEL; OTT, 2000).

Structure of planktonic ciliates community (Protist, Ciliophora) from an urban lake of southern Brazil/Estrutura da comunidade de ciliados planctonicos (Protista, Ciliophora) de um lago urbano do Sul do Brasil

Water samples were taken from the epilimnion and hypolimnion in the deepest portion of the lake using a Kemmerer sampler (Clean Lakes Program 2001; EPA 2007).

Physical and chemical limnology of three lakes within Hoosier National Forest

The TP concentration in the epilimnion and metalimnion varies from 15 to 20 ([micro]g [L.sup.-1], while the total nitrogen (TN) content is about 500 ([micro]g [L-.sup.1].

A radical shift from soft-water to hard-water lake: palaeolimnological evidence from Lake Kooraste Koverjarv, Southern Estonia/Paleolimnoloogiline uuring Kooraste Koverjarvest--veekogu muutumine pehmeveelisest kalgiveeliseks jarveks

The results of this study will provide information on the physico--chemical parameters of the lake at the epilimnion.

Anthropogenic pollution impact on physico-chemical characteristics of Lake Kivu, Rwanda

Its amplitude of water temperature was recorded about 10[degrees]C, difference between epilimnion and hypolimnion layers during thermocline, while it decreased to about 6.5[degrees]C in the SAD and TAD.

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. Si el esfuerzo de viento se mantiene constante durante un determinado tiempo, el agua se mueve como un todo manifestandose un seiche.

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)

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