Journal ArticleDOI
Water column dissolution of aragonite in the Pacific Ocean
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TLDR
Pteropods are an important component of the oceanic CO2 system and their shells appear to be a principal source of excess alkalinity in the upper water column of the North Pacific Ocean as discussed by the authors.Abstract:
Pelagic pteropods are an important component of the oceanic CO2 system. Their shells appear to be a principal source of excess alkalinity in the upper water column of the North Pacific Ocean. Dissolution of aragonite must therefore be taken account of in generating models of the oceanic CO2 system and is also an important cause of sample loss from long-term sediment traps deployed in undersaturated seawater.read more
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Anthropogenic ocean acidification over the twenty-first century and its impact on calcifying organisms
James C. Orr,Victoria J. Fabry,Olivier Aumont,Laurent Bopp,Scott C. Doney,Richard A. Feely,Anand Gnanadesikan,Nicolas Gruber,Akio Ishida,Fortunat Joos,Robert M. Key,Keith Lindsay,Ernst Maier-Reimer,Richard J. Matear,Patrick Monfray,Anne Mouchet,Raymond G. Najjar,Gian-Kasper Plattner,Keith B. Rodgers,Christopher L. Sabine,Jorge L. Sarmiento,Reiner Schlitzer,Richard D. Slater,I. Totterdell,Marie-France Weirig,Yasuhiro Yamanaka,Andrew Yool +26 more
TL;DR: 13 models of the ocean–carbon cycle are used to assess calcium carbonate saturation under the IS92a ‘business-as-usual’ scenario for future emissions of anthropogenic carbon dioxide and indicate that conditions detrimental to high-latitude ecosystems could develop within decades, not centuries as suggested previously.
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Impacts of ocean acidification on coral reefs and other marine calcifiers : a guide for future research
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TL;DR: In this paper, the authors present the results of a workshop on how the marine calcium carbonate system, and marine calcifiers, will respond to increasing concentrations of carbon dioxide in the ocean.
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Particulate organic carbon fluxes to the ocean interior and factors controlling the biological pump: A synthesis of global sediment trap programs since 1983
TL;DR: In this article, the authors investigated the geographic contrasts of POC export at m/b and the supply rate of ∑CO2 to the world mesopelagic water column.
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Ecology of sea ice biota 2. Global significance.
Louis Legendre,Stephen F. Ackley,Gerhard Dieckmann,Bjørn Gulliksen,Rita A. Horner,Takao Hoshiai,Igor A. Melnikov,William S. Reeburgh,Michael Spindler,Cornelius W. Sullivan +9 more
TL;DR: In this paper, new estimates of Arctic and Antarctic production of biogenic carbon are derived, and differences as well as similarities between the two oceans are examined.
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The role of the global carbonate cycle in the regulation and evolution of the Earth system
Andy Ridgwell,Richard E. Zeebe +1 more
TL;DR: In this paper, the authors highlight a mid-Mesozoic revolution in the nature and location of carbonate deposition in the marine environment, driven by the ecological success of calcareous plankton.
References
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Journal ArticleDOI
The equilibrium speciation of dissolved components in freshwater and sea water at 25°C and 1 atm pressure
TL;DR: In this paper, a data base summarising the stability constants of more than 500 complexes is used to calculate speciation pictures for 58 trace elements in model seawater (pH 8.2) and freshwaters (PH 6 and 9).
Journal ArticleDOI
The solubility of calcite and aragonite in seawater at various salinities, temperatures, and one atmosphere total pressure
Journal ArticleDOI
The thermodynamics of the carbonate system in seawater
TL;DR: In this paper, the effect of pressure on the apparent constants (K p i K o i ) have been fit to equations of the form ln ( K p i k o i) = − (ΔVP + 0.5 ΔK P 2 )/RT where the volume and compressibility changes are polynomial functions of temperature.
Journal ArticleDOI
The dissolution kinetics of biogenic calcium carbonates in seawater
TL;DR: In this article, the authors measured dissolution rate as a function of degree of undersaturation on shells of individual species of coccoliths and foraminifera, various size fractions of sediment from the Ontong-Java Plateau and the Rio Grande Rise, a collection of large pteropods, and on synthetic calcite and aragonite powder.
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The solubility of calcite and aragonite in seawater at various salinities, temperatures, and one atmosphere total pressure
Anthropogenic ocean acidification over the twenty-first century and its impact on calcifying organisms
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