Tag

Ocean Hypoxia

All articles tagged with #ocean hypoxia

environment1 year ago

"Tropical Cyclones: Unlikely Allies Against Ocean Hypoxia"

New research suggests that tropical cyclones have a net positive impact on ocean oxygenation and primary productivity in the East China Sea, countering issues of deoxygenation and hypoxia caused by human activities. The study found that tropical cyclones lead to increased oxygen levels and enhanced marine trophic webs, despite their devastating consequences on land. As climate change continues, the frequency of these events is likely to increase, presenting a paradoxical situation where tropical cyclones, while destructive on land, may benefit the marine realm.

science2 years ago

Twin Mass Extinctions Linked to Ancient Volcanic Eruptions.

Two mass extinctions that occurred approximately 259 million and 262 million years ago during the Middle Permian Period were caused by massive volcanic eruptions, according to an international team of researchers. The study of uranium isotope profiles of marine samples collected in the South China Sea revealed two “pulses” where the oceans were deprived of life-giving oxygen. The research can help predict the potential impact of modern-day global warming on ocean food chains, and researchers emphasize the importance of addressing global environmental issues to prevent a sixth mass extinction.

science2 years ago

Double Mass Extinctions Uncovered by Geology Experts 260 Million Years Ago

Geology experts have found evidence that the mass extinction 260 million years ago was actually two events separated by 3 million years, both likely caused by volcanic eruptions. By studying uranium isotope profiles of marine samples collected in the South China Sea, scientists identified two "pulses" in which the oceans became deprived of life-giving oxygen. The study provides evidence that the oxygen-deprived oceans precipitated two mass extinctions around 259 million and 262 million years ago during the Middle Permian Period.