Reduced calcification of marine plankton in response to increased atmospheric CO2

@article{Riebesell2000ReducedCO,
  title={Reduced calcification of marine plankton in response to increased atmospheric CO2},
  author={Ulf Riebesell and Ingrid Zondervan and Bj{\"o}rn Rost and Philippe D. Tortell and Richard E. Zeebe and François M M Morel},
  journal={Nature},
  year={2000},
  volume={407},
  pages={364-367}
}
The formation of calcareous skeletons by marine planktonic organisms and their subsequent sinking to depth generates a continuous rain of calcium carbonate to the deep ocean and underlying sediments. This is important in regulating marine carbon cycling and ocean–atmosphere CO2 exchange. The present rise in atmospheric CO2 levels causes significant changes in surface ocean pH and carbonate chemistry. Such changes have been shown to slow down calcification in corals and coralline macroalgae… Expand
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References

SHOWING 1-10 OF 24 REFERENCES
Effect of calcium carbonate saturation state on the calcification rate of an experimental coral reef
The concentration of CO2 in the atmosphere is projected to reach twice the preindustrial level by the middle of the 21st century. This increase will reduce the concentration of CO32− of the surfaceExpand
Effect of calcium carbonate saturation of seawater on coral calcification
Abstract The carbonate chemistry of seawater is usually not considered to be an important factor influencing calcium-carbonate-precipitation by corals because surface seawater is supersaturated withExpand
Production and accumulation of calcium carbonate in the ocean: Budget of a nonsteady state
Present-day production of CaCO3 in tne world ocean is calculated to be about 5 billion tons (bt) per year, of which about 3 bt accumulate in sediments; the other 40% is dissolved. Nearly half of theExpand
Direct effects of CO2 concentration on growth and isotopic composition of marine plankton
TLDR
Although quantitative estimates of their impacts on the oceanic carbon cycle are not yet feasible, all three effects increase the ocean's capacity to take up and store atmospheric CO 2 and hence, can serve as negative feedbacks to anthropogenic CO 2 increase. Expand
Significance of ocean carbonate budgets for the global carbon cycle
Changes in the trace gas composition of the atmosphere over glacial–interglacial cycles are linked to changes in the oceanic carbon cycle. This paper examines the role of biologically driven fluxesExpand
Marine calcification as a source of carbon dioxide : positive feedback of increasing atmospheric CO2
Calcification is a well-recognized source of CO2 to the surrounding water and thus a potential source of atmospheric CO2 due to chemical equilibria involving the CO2 species. The released CO2:Expand
Marine biota effects on the compositional structure of the world oceans
The vertical structure of total carbon, alkalinity, nutrients, and dissolved oxygen in the world oceans is examined with a one-dimensional equatorial ocean/polar ocean box model.Expand
Impact of a coccolithophorid bloom on dissolved carbon dioxide in sea water enclosures in a Norwegian fjord
Abstract During an experiment conducted using four, 11 m3 mesocosms situated in a small Norwegian fjord, the partial pressure of carbon dioxide (PCO2) and dissolved oxygen were determined in eachExpand
Calcification generates protons for nutrient and bicarbonate uptake
Abstract The biosphere's great carbonate deposits, from caliche soils to deep-sea carbonate oozes, precipitate largely as by-products of autotrophic nutrient acquisition physiologies. ProtonsExpand
A model system approach to biological climate forcing : The example of Emiliania huxleyi
Abstract Particulate inorganic carbon (calcium carbonate mineral) is produced by pelagic calcifying organisms in the upper layers of the open ocean, it sinks to the deep sea, is partly dissolved andExpand
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