Tag Archives: ocean deoxygenation

Guest post: How global warming is causing ocean oxygen levels to fall

bubbles in water
Air bubbles floating up through blue sea water, Galapagos Islands, 2015. Credit: Watchtheworld/Alamy Stock Photo.

Prof Andreas Oschlies is head of the marine biogeochemical modelling group and speaker of the Collaborative Research Centre SFB 754 at the Helmholtz Centre for Ocean Research Kiel (GEOMAR) and Kiel University, Prof Peter Brandt is professor of physical oceanography at GEOMAR and Kiel University, and Dr Lothar Stramma and Dr Sunke Schmidtko are senior scientists in the physical oceanography group at GEOMAR

June 15, 2018 — Direct measurements show the amount of oxygen in the global oceans has decreased by around 2% over the past 50 years. Continue reading Guest post: How global warming is causing ocean oxygen levels to fall

Oceans suffocating as huge dead zones quadruple since 1950, scientists warn

dead sardines in temuco, chile
A fisherman on a beach in Temuco, Chile that is blanketed with dead sardines, a result of algal blooms that suck oxygen out of the water. Photograph: Felix Marquez/AP

Areas starved of oxygen in open ocean and by coasts have soared in recent decades, risking dire consequences for marine life and humanity

January 4, 2018 — Ocean dead zones with zero oxygen have quadrupled in size since 1950, scientists have warned, while the number of very low oxygen sites near coasts have multiplied tenfold. Continue reading Oceans suffocating as huge dead zones quadruple since 1950, scientists warn