With low oxygen concentrations increasing worldwide in lakes and reservoirs, these ecosystems will produce higher concentrations of methane in the future, leading to more global warming. Low oxygen levels in bottom waters have been shown to increase methane concentrations by 15 to 800 times at the whole-ecosystem scale. Decreasing runoff of fertilizer in lakes and reservoirs is one way to prevent the depletion of oxygen.
www.sciencedaily.com/releases/2020/12/201210120349.htm