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-Dissolved oxygen is a
measure of the concentration of oxygen dissolved in the water column. Dissolved oxygen is influenced by a
variety of factors, including
lake basin, depth,and nutrient levels, but most importantly by temperature.
Cold water holds more oxygen than warm water. As Jess just described, in the summer months, due
to stratification, the bottom layer of water-the hypolimnion, can become
oxygen depleted, or anoxic,
with oxygen levels below 1ppm..
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