does temperature affect the rate of photosynthesis by aquatic plants?
As water temperature increases,
plants tend to produce more oxygen, to grow faster, and to die at
a faster rate.
During the day, plants are producing
oxygen and dissolved oxygen levels in the water tend to increase
throughout the daylight hours. In the dark, photosynthesis stops,
but the consumption of oxygen by organisms continues. Therefore,
at night and in early morning hours, the amount of dissolved oxygen
in the water tends to decrease.
Bacteria in the water feed on dead
plants. These bacteria use up some of the dissolved oxygen
in the water. Therefore, as more plants die, the amount of
dissolved oxygen in water decreases.
Algae covers the
water (Lake Madison, TX)
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