Search for: [Abstract = "A distinct thermal stratification and metalimnetic oxygen deficits were observed in the tropical dam Madden Lake throughout the year as a result of cool river influents. The role of the steep density gradient in metalimnion is discussed as a factor slowing down the rate of sinking of organic matter. As a result, the thermocline layer, which is in most cases immediately below the lowest extents of the euphotic layer, prevents a substantial part of the nutrients from falling out of the cycling in epilimnion and provides for the nonfluctuating and high standing crop and production of phytoplankton in the limnetic zone."]

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