In the early 1990s, 73 percent of the studied lakes registered average summer dissolved oxygen levels above 5 mg/l. By 2021, 55 percent of the lakes exceeded the oxygen threshold.

While oxygen loss in oceans has been documented, the changes in dissolved oxygen concentrations in lakes are less well understood, in part owing to a lack of long-term and large-scale studies, ...

Warming climate spurs harmful oxygen loss in lakes Date: December 6, 2022 Source: Cornell University Summary: New research shows a continually warming world is leading to extended, late-summer ...

On several expeditions, the team’s dissolved oxygen sensors oddly suggested that the substance, rather than just being consumed by organisms, was actually, on the whole, being produced.