"Recurring Deoxygenation Threatens Marine Life: A Historical Perspective"
A new study published in Nature Geosciences reveals that oceanic deoxygenation (anoxia) played a significant role in the Triassic-Jurassic mass extinction event that occurred around 200 million years ago. Surprisingly, the study shows that the global extent of extreme deoxygenation during that time was similar to present-day levels. The research highlights the vulnerability of marine ecosystems to local deoxygenation, even when global deoxygenation levels are not widespread. The findings have implications for understanding present-day ecosystem stability and the potential impacts of global warming and increased nutrient run-off on marine environments.