O2 % Saturation 


 Processes that increase (+) and decrease (-) oxygen in water.
Oxygen +Oxygen -
Photosynthesis Respiration
Wave action Decomposition
Lower temperatures Higher temperatures
Lower salinity Higher salinity
Clear water Murky water

Oxygen saturation is the maximum amount of oxygen which can be retained in water without loss to the atmosphere. It is reported by SCCF RECON as the percentage of dissolved oxygen in the water in relationship to the calculated maximum amount of dissolved oxygen the water can hold, which is based on salinity, water temperature, and pressure. The solubility of gases, including oxygen, generally decreases with increasing temperature and salinity, and increases with increasing pressure. Dissolved Oxygen concentrations over 100% are possible as aquatic plants, like seagrasses or algae photosynthesis and release oxygen into the water.