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The data of different lakes models used in this section was obtained using The Aquatic Ecosystem Simulator (Randerson and Bowker, 2008). The model used is deterministic, so there is no variation in different simulation runs.  All variables and daily data we obtained from Artick, North1, North2 and Tropical lakes are shown in Anex 1.  \subsection{Arctic Lake} Lake (Ar)}  In general, Arctic lake systems are classified as oligotrophic due to their low primary production, represented in chlorophyll values of 0.8-2.1 mg/m3. The lake’s water column, or limnetic zone, is well-mixed; this means that there are no stratifications (layers with different temperatures). During winter (October to March), the surface of the lake is ice covered. During summer (April to September), ice melts and the water flow and evaporation increase, as shown in Figure **. Consequently, the two climatic periods (winter and summer) in the Arctic region cause a typical hydrologic behavior in lakes as the one shown in Figure **.  This hydrologic behavior influences the physiochemical subsystem of the lake. 

All limiting nutrients are above of 90 percent available for phytoplankton in all seasons. According with this availability, phytoplankton and periphyton biomass composition is dominated by planktonic (47) and benthic (34.3) diatoms. This way, 100 percent of zooplankton composition is reached by herbivorous zooplankton and fish community is dominated by benthic fish (67.6).  \subsection{North Higland Lake} Lake (NH)}  North highland lake corresponds with a mesotrophic ecosystem in a cool North-Temperate climate (Mean 5.3ºC). Levels of chlorophyll are between 2.2.-6.2 mg/m3. The surface is covered with ice in winter (end of November, December, January and early February). Ice covering forms a barrier to the wind which minimizes losses of water evaporation while the bottom of the lake remains unfrozen. The water column does not thermostratified and is permanently well mixed whit levels of 50 percent in summer and 90 percent in winter. The maximum flows are in spring and autumn (9.6) with minimum flow in summer(0.6). Evaporation is reduced because their water is more or less cold and vapour-pressure gradients are no large (mean of 9,262). Retention Time is maximum in summer with 100 days. Oxygen concentration is upper to 10 mg/lt in the three layers. pH mean values are around 7 to 7.3, but it moves in a range of 6.7 to 7.8 from the surface to bottom. 

Limiting Nutrients like nitrates and carbon dioxide are around of 95 percent available for phytoplankton. Phosphates and Silicates show variations and minor percentage of availability. The former around of 80 percent and the second one around 95 all year. Biomass composition is dominated by planktonic (46.7) and benthic (41) diatoms. Zooplankton composition is almost of herbivorous zooplankton (91.4), but carnivorous zooplankton reaches a little percentage of 8.6. The group of benthic invertebrates appears with the dominance of the detritivores (87.5). Fish community is dominated by benthic fish again but in a high proportion (88.9).  \subsection{Tropical Lake} Lake (T)}  The Tropical Lake is a  Hyper-eutrophic ecosystem (Chlorophyll > 19.2 mg/lt) located in a moist Tropical climate, at north of the equator, near to the tropic of cancer with a mean temperature of 25ºC in surface layer. This has one wet season and one dry season. Higher irradiance conducts to higher temperatures (Mean) and smaller thermal differences between layers. For that reason,  the water column is permanently warm and stratified. Stratification is due to the heat exchange, but is less stable than at higher latitudes, the wind could have great incidence in the mixing of the water column. Thus, intraseasonal variations have an effect in thickness of the mixed layer than other morphometrically similar temperate lakes  (AES, Lewis). The maximum flow of water is in the wet season, and minimum flow is in the dry season. Episodes of heat and mixing, affects the nutrient cycling and plankton dynamics. It is highlighted that primary production in tropical lakes is about twice than higher latitudes. Also, it is known that Nitrogen is the more limiting nutrient.