climate change lake hume

Oxygen Levels in Earth’s Lakes Are Plummeting, Study Reveals

March 30, 2025 | Source: Science Alert | by Tessa Koumoundouros

Earth’s lakes are experiencing an alarming drop in oxygen levels, new research shows.

Similar trends have also been observed across rivers and seas. But some lakes are losing oxygen up to nine times faster than oceans.

A new study has now identified how much the different mechanisms responsible are contributing to this loss of lake oxygen globally, which between 1980 and 2017 was 5.5 percent in surface waters and 18.6 percent in deep waters.