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<p>and lakes depends on how solar radiation is distributed, which is why water turbulence, mainly caused by wind stress, can greatly increase the efficiency of heat transfer. In shallow lakes, stratification into epilimnion, metalimnion, and hypolimnion often does not occur, as wind or cooling causes regular mixing throughout the year. These lakes are called <a href="page.php?w=Polymictic_lake">polymictic</a>. There is not a fixed depth that differentiates polymictic and stratifying lakes, as this is also influenced by turbidity, lake surface area,</p><p>
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