In general, the water in the lakes and in the Iberá is very little mineralized, with
conductivity between 15 and 45 S cm–1, with an ionic classification by type of
bicarbonate: calcium-sodium or sodium-calcium. The low blockage of flow and the
high quantity of organic material lead to a fluctuating pH and often acidic with values
that range between 5 and 7 units, even in the daily cycle. The tenure of dissolved
oxygen is comparatively high, and transparency is usually high (75 per cent
measured with the Secchi disk), limited occasionally by seasonal development of
plankton or the stirring-up of the bottom by aeolian action.
In general, the water in the lakes and in the Iberá is very little mineralized, withconductivity between 15 and 45 S cm–1, with an ionic classification by type ofbicarbonate: calcium-sodium or sodium-calcium. The low blockage of flow and thehigh quantity of organic material lead to a fluctuating pH and often acidic with valuesthat range between 5 and 7 units, even in the daily cycle. The tenure of dissolvedoxygen is comparatively high, and transparency is usually high (75 per centmeasured with the Secchi disk), limited occasionally by seasonal development ofplankton or the stirring-up of the bottom by aeolian action.
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