why do scientists measure levels of dissolved oxygen in water

Answer 1

Scientists measure levels of dissolved oxygen in water because it is a critical parameter for determining the health and quality of the aquatic environment. Dissolved oxygen is essential for the survival of aquatic organisms, such as fish and invertebrates, as it is needed for respiration.

Low levels of dissolved oxygen can harm or kill aquatic organisms and disrupt the balance of the ecosystem. High levels of dissolved oxygen can also indicate pollution from substances such as excess nutrients or organic matter, which can lead to algal blooms and other negative impacts on water quality.

By monitoring levels of dissolved oxygen, scientists can assess the overall health of the water body, identify sources of pollution, and take necessary actions to protect and preserve aquatic ecosystems.