21 Water Quality Parameters 18

21 Water Quality Parameters 18 - Stirring and agitation...

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Temperature Poikilothermic Organisms Changes in the growth rates of cold-blooded aquatic organisms and many biochemical reaction rates can often be approximated by a rule which predicts that growth rates will double if temperature increases by 10°C (18°F) within their "preferred" range Fish, insects, zooplankton, phytoplankton, bacteria Increased temperature, however, impacts dissolved oxygen contents.
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Temperature and Oxygen The solubility of oxygen in water is highly temperature dependent. Oxygen 10.1 mg/L 8.3 mg/L 15 o C 25 o C
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Oxygen is water soluble, but its solubility is temperature-dependent. Cold water species: 5 mg/L Trout Cool water species: 4 mg/L Pike Warm water species: 2-3 mg/L Bass, Catfish, Bluegill
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Unformatted text preview: Stirring and agitation increases oxygen content Cooler Water SO 4-2 HS-O 2 NO 3-SO 4-2 Still Ponds C 6 H 12 O 6 + 3SO 4 2-+ 3H + = 6HCO 3-+ 3HS-Oxygen Oxygen is water soluble, but its solubility is temperature-dependent. In the atmosphere, about one out of 5 molecules is oxygen; in water, about one out of every 100,000 molecules is oxygen. Oxygen enters the water body from the atmosphere and from photosynthesis near the surface Oxygen leaves the water column principally by organism respiration. Oxygen contents of water bodies generally is higher at the surface than at depth. Stirring and agitation increases water’s oxygen content...
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