The Geological Record of Ocean Acidification

  title={The Geological Record of Ocean Acidification},
  author={B{\"a}rbel H{\"o}nisch and Andy Ridgwell and Daniela N. Schmidt and Ellen Thomas and Samantha J. Gibbs and Appy Sluijs and Richard E. Zeebe and Lee R. Kump and Rowan C. Martindale and Sarah E. Greene and Wolfgang Kiessling and Justin B. Ries and James C. Zachos and Dana L. Royer and Stephen Barker and Thomas M. Marchitto and Ryan P. Moyer and Carles Pelejero and Patrizia Ziveri and Gavin L. Foster and Branwen Williams},
  pages={1058 - 1063}
Acid History As human activity continues to pump nearly 50-fold more CO2 into the atmosphere than any existing natural sources, the oceans absorb it. Over time, this vast quantity of excess oceanic CO2 is expected to decrease oceanic pH and have marked effects on calcifying marine species. Looking to the past for records of the consequences, other instances of ocean acidification in geologic history caused by large natural events, such as volcanism, may help predict the oceans' response to… 
History of Seawater Carbonate Chemistry, Atmospheric CO 2 , and Ocean Acidification
Humans are continuing to add vast amounts of carbon dioxide (CO2) to the atmosphere through fossil fuel burning and other activities. A large fraction of the CO2 is taken up by the oceans in a
Clues from Current High CO2 Environments on the Effects of Ocean Acidification on CaCO3 Preservation
Acidification of surface seawater owing to anthropogenic activities has raised serious concerns on its consequences for marine calcifying organisms and ecosystems. To acquire knowledge concerning the
Ocean Acidification and the End-Permian Mass Extinction: To What Extent does Evidence Support Hypothesis?
Ocean acidification in modern oceans is linked to rapid increase in atmospheric CO2, raising concern about marine diversity, food security and ecosystem services. Proxy evidence for acidification
Ocean acidification and the Permo-Triassic mass extinction
A high-resolution seawater pH record is presented across this interval, using boron isotope data combined with a quantitative modeling approach, to present a possible kill mechanism for the Permo-Triassic Boundary mass extinction.
Chapter 18 – Ocean Acidification
Effect of a Jurassic oceanic anoxic event on belemnite ecology and evolution
It is inferred that belemnites adapted to environmental change by shifting their habitat from cold bottom waters to warm surface waters in response to expanded seafloor anoxia, enabling a strong evolutionary diversification after the Toarcian oceanic anoxic event.
Why Dissolved Organics Matter: DOC in Ancient Oceans and Past Climate Change
The changing ocean and freshwater CO2 system
Surviving rapid climate change in the deep sea during the Paleogene hyperthermals
It is suggested that there is a response threshold for extinction and calcification response, while highlighting the utility of the geological record in helping constrain the sensitivity of biotic response to environmental change.
The Marine Carbon System and Ocean Acidification during Phanerozoic Time
The global CO2-carbonic acid-carbonate system of seawater, although certainly a well-researched topic of interest in the past, has risen to the fore in recent years because of the environmental issue


Ocean acidification of the Greater Caribbean Region 1996–2006
[1] The global oceans serve as the largest sustained natural sink for increasing atmospheric carbon dioxide (CO2) concentrations. As this CO2 is absorbed by seawater, it not only reacts causing a
The societal challenge of ocean acidification.
Carbon sequestration activated by a volcanic CO 2 pulse during Ocean Anoxic Event 2
Ninety-four million years ago, during Ocean Anoxic Event 2, there was a marked increase in the burial of organic carbon in marine sediments. Measurements of stomata in fossil leaves show that the two
Oceanography: Anthropogenic carbon and ocean pH
It is found that oceanic absorption of CO2 from fossil fuels may result in larger pH changes over the next several centuries than any inferred from the geological record of the past 300 million years.
Assessing the potential long-term increase of oceanic fossil fuel CO 2 uptake due to CO 2 -calcification feedback
It is predicted that a substantial reduction in marine carbonate production is possible in the future, with enhanced ocean CO2 sequestration across the model ensemble driving a 4–13% reduction in the year 3000 atmospheric fossil fuel CO2 burden.
Release of methane from a volcanic basin as a mechanism for initial Eocene global warming
It is proposed that intrusion of voluminous mantle-derived melts in carbon-rich sedimentary strata in the northeast Atlantic may have caused an explosive release of methane—transported to the ocean or atmosphere through the vent complexes—close to the Palaeocene/Eocene boundary.
Impact of Anthropogenic CO2 on the CaCO3 System in the Oceans
The in situ CaCO3 dissolution rates for the global oceans from total alkalinity and chlorofluorocarbon data are estimated, and the future impacts of anthropogenic CO2 on Ca CO3 shell–forming species are discussed.
▪ Abstract One of the greatest mass extinctions in Earth's history occurred at the end of the Cretaceous era, sixty-five million years (Myr) ago. Considerable evidence indicates that the impact of a
Warming up, turning sour, losing breath: ocean biogeochemistry under global change
  • N. Gruber
  • Environmental Science
    Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences
  • 2011
Ocean warming, acidification and deoxygenation are essentially irreversible on centennial time scales, i.e. once these changes have occurred, it will take centuries for the ocean to recover.