Tag

Deoxygenation

All articles tagged with #deoxygenation

environment1 month ago•13 min saved

Oceanic oxygen loss could destabilize ecosystems, scientists warn

Scientists warn that dissolved oxygen in global oceans is falling rapidly due to warming, nutrient pollution, and algal blooms, threatening marine life across the food chain and possibly affecting climate regulation. Researchers from UC San Diego’s Scripps Institution of Oceanography say this aquatic deoxygenation should be added to the Planetary Boundaries framework to reflect its global importance, and note that recovery could take centuries without coordinated emissions cuts and nutrient controls.

via Oceanographic Magazine|

#algal-blooms #deoxygenation #environment

science6 months ago•5 min saved

A Decade of Seafloor Silence: Deoxygenation Disrupts Deep-Sea Recycling

Scientists using the NEPTUNE observatory monitored Barkley Canyon for nearly 10 years and found an unexpected absence of decay activity around whale bones and wood, lacking typical scavengers and bone-eating organisms. The results suggest ocean deoxygenation and expanding oxygen minimum zones are suppressing the deep-sea recyclers (Osedax, Xylophaga), potentially slowing organic decomposition and nutrient cycling with ripple effects on the broader food web.

via Indian Defence Review|

#carbon-cycle #deep-sea #deoxygenation

environment2 years ago•3 min saved

"Unveiling the Ancient Ocean Crisis: Deoxygenation's Eerie Parallels to Today"

A study published in Nature Geosciences reveals that oceanic anoxia, or deoxygenation, played a significant role in marine extinctions during the Triassic-Jurassic period, with current levels of deoxygenation mirroring those of the past. The research highlights the sensitivity of marine ecosystems to local and global environmental changes, emphasizing the importance of understanding the fragility of present-day marine ecosystems in the face of increasing deoxygenation.

via SciTechDaily|

#deoxygenation #ecosystem-fragility #environment

science2 years ago•3 min saved

"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.

via Phys.org|

#deoxygenation #ecosystem-disruption #global-warming

science3 years ago•2 min saved

NASA Predicts Earth's Demise: Sun's Destruction Date Determined.

Researchers working with NASA have determined that in just over a billion years, the radiation emitted from the sun will become too much for Earth’s atmosphere and will consume all of the oxygen, ultimately ending all life on the planet. Climate change may make this happen sooner. This acts as a cautionary tale for the survival of the human race, urging us to change our ways on Earth and explore space for our future.

via msnNOW|

#climate-change #deoxygenation #earth