Dissolved Oxygen

Dissolved oxygen (DO) is the presence of oxygen in water, and is one of the most important characteristics that determine the health of aquatic ecosystems. Oxygen is necessary for the development and growth of aquatic organisms and the overall health of the water body. Dissolved oxygen concentrations in aquatic systems can be affected by both natural factors, such as photosynthesis and respiration, and human activities, such as wastewater discharge and agricultural runoff. Furthermore, low dissolved oxygen levels can cause a decline in water quality, affecting the biodiversity and water use of the aquatic ecosystem. Measuring dissolved oxygen is essential for understanding the health of a water body and managing aquatic ecosystems.