17 May '11, 3pm

Ancient ocean sediment shows mass die-offs in eras of high CO2

17 May 2011: Ancient Ocean Sediments Show Mass Die-Offs in Eras of High CO2 A new study of prehistoric ocean sediments from an era of high carbon dioxide concentrations shows that warm oceans with high CO2 levels and low-ocean conditions have experienced mass extinctions of marine organisms . Scientists from the UK and Australia examined ocean sediment samples off the coast A Looming Oxygen Crisis and Its Impact on World’s Oceans As warming intensifies, scientists warn, the oxygen content of oceans across the planet could be more and more diminished, with serious consequences for the future of fish and other sea life, Carl Zimmer writes. READ THE e360 REPORT of western Africa from the late Cretaceous period, 85 million years ago, an epoch of high atmospheric CO2 levels. The researchers found a significant amount of organic matter from marine organisms buried within the deo...

Full article: http://e360.yale.edu/digest/ancient_ocean_sediments_shows...

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