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… Expand
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 aExpand
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 theExpand
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 acidificationExpand
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. Expand
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. Expand
Chapter 18 – Ocean Acidification
The ocean has absorbed about 30% of the CO2 emitted into the atmosphere from anthropogenic sources. This has resulted in the measurable alteration of ocean carbonate chemistry. Ocean pH has alreadyExpand
Why Dissolved Organics Matter: DOC in Ancient Oceans and Past Climate Change
Abstract Earth history is punctuated by a huge variety of transitions and perturbations in climate and global biogeochemical cycles. Some of these events exhibit evidence for greenhouse warming andExpand
The changing ocean and freshwater CO2 system
On a global scale, ocean carbon dioxide levels and therefore the rate of surface ocean acidification (lowering of pH) is generally set by how much anthropogenic CO2 humans emit to the atmosphere.Expand
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. Expand
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 issueExpand


Calcareous Nannoplankton Response to Surface-Water Acidification Around Oceanic Anoxic Event 1a
It is shown that, during the Aptian (~120 million years ago), Oceanic Anoxic Event 1a, which resulted from a massive addition of volcanic CO2, the morphological features of calcareous nannofossils traced the biological response to acidified surface waters. Expand
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 aExpand
Ocean acidification and surface water carbonate production across the Paleocene-Eocene thermal maximum
The addition of massive amounts of carbon to the ocean-atmosphere system at the Paleocene-Eocene thermal maximum (PETM, similar to 55 Ma) caused deep-ocean acidification, evidenced by widespreadExpand
The societal challenge of ocean acidification.
While the dissolution of carbonate sediments on the bottom of the ocean and the weathering of rocks on land coupled with mixing of surface and deeper waters will eventually restore ocean pH to its pre-industrial state, this process will take up to a million years to complete. Expand
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 twoExpand
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. Expand
On the potential for ocean acidification to be a general cause of ancient reef crises
Anthropogenic rise in the carbon dioxide concentration in the atmosphere leads to global warming and acidification of the oceans. Ocean acidification (OA) is harmful to many organisms but especiallyExpand
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. Expand
Surface-water acidification and extinction at the Cretaceous-Tertiary boundary
If published estimates of SO2 volatilization and NOx generation by the Cretaceous-Tertiary (K-T) impact were atmospherically converted to sulfuric and nitric acid, globally dispersed, and rapidlyExpand
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. Expand