Seasonal Distribution of Dissolved Oxygen in Lakes

Diffusion of oxygen from the atmosphere into and within water is a relatively slow process. Turbulent mixing of water is required for dissolved oxygen to be distributed in equilibrium with that of the atmosphere. Subsequent distribution of oxygen in the water of thermally stratified lakes is controlled by a number of solubility conditions, hydrodynamics, inputs from photosynthesis, and losses to chemical and metabolic oxidations (processes with compounds that gain oxygen).