Seawater carbonate chemistry and benthic foraminifera Ammonia sp. uranium incorporation during experiments, 2013
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| Format: | Dataset Open Access |
| Language: | en |
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PANGAEA
2013
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| _version_ | 1867169085579591680 |
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| author | Keul, Nina Langer, Gerald de Nooijer, Lennart Jan Nehrke, Gernot Reichart, Gert-Jan Bijma, Jelle |
| author_facet | Keul, Nina Langer, Gerald de Nooijer, Lennart Jan Nehrke, Gernot Reichart, Gert-Jan Bijma, Jelle |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | The chemical and isotopic composition of foraminiferal shells (so-called proxies) reflects the physico-chemical properties of the seawater. In current day paleoclimate research, the reconstruction of past seawater carbonate system to infer atmospheric CO2 concentrations is one of the most pressing challenges and a variety of proxies have been investigated, such as foraminiferal U/Ca. Since in natural seawater and traditional CO2 perturbation experiments, the carbonate system parameters co-vary, it is not possible to determine the parameter of the carbonate system causing e.g. changes in U/Ca, complicating the use of the latter as a carbonate system proxy. We overcome this problem, by culturing the benthic foraminifer Ammonia sp. at a range of carbonate chemistry manipulation treatments. Shell U/Ca values were determined to test sensitivity of U incorporation to various parameters of the carbonate system. We argue that CO3 is the parameter affecting the U/Ca ratio and consequently, the partitioning coefficient for U in Ammonia sp DU. We can confirm the strong potential of foraminiferal U/Ca as a CO3 proxy. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_821210 |
| institution | PANGAEA |
| language | en |
| publishDate | 2013 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Seawater carbonate chemistry and benthic foraminifera Ammonia sp. uranium incorporation during experiments, 2013 Keul, Nina Langer, Gerald de Nooijer, Lennart Jan Nehrke, Gernot Reichart, Gert-Jan Bijma, Jelle Alkalinity, total; Ammonia sp.; Aragonite saturation state; Benthos; Bicarbonate ion; BIOACID; Biological Impacts of Ocean Acidification; Biological sample; Biomass/Abundance/Elemental composition; BIOS; Bottles or small containers/Aquaria (<20 L); Calcite saturation state; Calculated, see reference(s); Calculated using CO2SYS; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Chromista; Coast and continental shelf; Coefficient; Conductivity and pH meter, pH/Cond 340i (WTW, Weilheim); EPOCA; European Project on Ocean Acidification; Experimental treatment; Foraminifera; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Keul-2011-Ammonia; Laboratory experiment; Mediterranean Sea Acidification in a Changing Climate; MedSeA; North Atlantic; OA-ICC; Ocean acidification; Ocean Acidification International Coordination Centre; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); pH, total scale; Photometrically using autoanalyzer QUAATRO; Salinity; Single species; Temperate; Temperature, water; Uranium/Calcium ratio; Wadden Sea; Zooplankton The chemical and isotopic composition of foraminiferal shells (so-called proxies) reflects the physico-chemical properties of the seawater. In current day paleoclimate research, the reconstruction of past seawater carbonate system to infer atmospheric CO2 concentrations is one of the most pressing challenges and a variety of proxies have been investigated, such as foraminiferal U/Ca. Since in natural seawater and traditional CO2 perturbation experiments, the carbonate system parameters co-vary, it is not possible to determine the parameter of the carbonate system causing e.g. changes in U/Ca, complicating the use of the latter as a carbonate system proxy. We overcome this problem, by culturing the benthic foraminifer Ammonia sp. at a range of carbonate chemistry manipulation treatments. Shell U/Ca values were determined to test sensitivity of U incorporation to various parameters of the carbonate system. We argue that CO3 is the parameter affecting the U/Ca ratio and consequently, the partitioning coefficient for U in Ammonia sp DU. We can confirm the strong potential of foraminiferal U/Ca as a CO3 proxy. |
| title | Seawater carbonate chemistry and benthic foraminifera Ammonia sp. uranium incorporation during experiments, 2013 |
| topic | Alkalinity, total; Ammonia sp.; Aragonite saturation state; Benthos; Bicarbonate ion; BIOACID; Biological Impacts of Ocean Acidification; Biological sample; Biomass/Abundance/Elemental composition; BIOS; Bottles or small containers/Aquaria (<20 L); Calcite saturation state; Calculated, see reference(s); Calculated using CO2SYS; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Chromista; Coast and continental shelf; Coefficient; Conductivity and pH meter, pH/Cond 340i (WTW, Weilheim); EPOCA; European Project on Ocean Acidification; Experimental treatment; Foraminifera; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Keul-2011-Ammonia; Laboratory experiment; Mediterranean Sea Acidification in a Changing Climate; MedSeA; North Atlantic; OA-ICC; Ocean acidification; Ocean Acidification International Coordination Centre; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); pH, total scale; Photometrically using autoanalyzer QUAATRO; Salinity; Single species; Temperate; Temperature, water; Uranium/Calcium ratio; Wadden Sea; Zooplankton |
| url | https://doi.org/10.1594/PANGAEA.821210 |