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Keul, Nina; Langer, Gerald; de Nooijer, Lennart Jan; Bijma, Jelle (2013): Seawater carbonate chemistry and benthic foraminifera Ammonia sp. mass, size, and growth rate during experiments, 2013. doi:10.1594/PANGAEA.821209,
Supplement to: Keul, N et al. (2013): Effect of ocean acidification on the benthic foraminifera Ammonia sp. is caused by a decrease in carbonate ion concentration. Biogeosciences, 10(10), 6185-6198, doi:10.5194/bg-10-6185-2013

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Abstract:
About 30% of the anthropogenically released CO2 is taken up by the oceans; such uptake causes surface ocean pH to decrease and is commonly referred to as ocean acidification (OA). Foraminifera are one of the most abundant groups of marine calcifiers, estimated to precipitate ca. 50 % of biogenic calcium carbonate in the open oceans. We have compiled the state of the art literature on OA effects on foraminifera, because the majority of OA research on this group was published within the last three years. Disparate responses of this important group of marine calcifiers to OA were reported, highlighting the importance of a process-based understanding of OA effects on foraminifera. We cultured the benthic foraminifer Ammonia sp. under a range of carbonate chemistry manipulation treatments to identify the parameter of the carbonate system causing the observed effects. This parameter identification is the first step towards a process-based understanding. We argue that CO3 is the parameter affecting foraminiferal size-normalized weights (SNWs) and growth rates. Based on the presented data, we can confirm the strong potential of Ammonia sp. foraminiferal SNW as a CO3 proxy.
Related to:
Keul, Nina; Langer, Gerald; de Nooijer, Lennart Jan; Nehrke, Gernot; Reichart, Gert-Jan; Bijma, Jelle (2013): Seawater carbonate chemistry and benthic foraminifera Ammonia sp. uranium incorporation during experiments, 2013. doi:10.1594/PANGAEA.821210
Coverage:
Latitude: 53.701400 * Longitude: 8.479000
Date/Time Start: 2011-01-01T00:00:00 * Date/Time End: 2011-05-01T00:00:00
Event(s):
Keul-2011-Ammonia * Latitude: 53.701400 * Longitude: 8.479000 * Date/Time Start: 2011-01-01T00:00:00 * Date/Time End: 2011-05-01T00:00:00 * Location: Wadden Sea * Device: Biological sample (BIOS)
Comment:
In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Lavigne and Gattuso, 2011) was used to compute a complete and consistent set of carbonate system variables, as described by Nisumaa et al. (2010). In this dataset the original values were archived in addition with the recalculated parameters (see related PI).
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethodComment
1IdentificationIDKeul, Nina
2Ammonia sp., sizeAmmonia sp. sizeµmKeul, NinaStereomicroscopy (Zeiss Stemi SV 11)Final length, on Pyser bar scale
3Ammonia sp., weightAmmonia sp. WµgKeul, NinaUltra-Microbalance (Mettler Toledo UMX 2)Final weight
4Time in daysTimedaysKeul, NinaIn culture
5Ammonia sp., growth rate per individualAmmonia sp. µ/ind10-2 µg/day/#Keul, NinaCalculated, see reference(s)
6Ammonia sp., weight, size normalizedAmmonia sp. W norm10-2 µg/µmKeul, NinaCalculated, see reference(s)
7SalinitySalKeul, NinaConductivity and pH meter, pH/Cond 340i (WTW, Weilheim)
8Temperature, waterTemp°CKeul, NinaConductivity and pH meter, pH/Cond 340i (WTW, Weilheim)
9Carbonate ion[CO3]2-µmol/kgKeul, NinaCalculated using CO2SYS
10pHpHKeul, NinaConductivity and pH meter, pH/Cond 340i (WTW, Weilheim)Total scale
11Alkalinity, totalATµmol/kgKeul, NinaCalculated using CO2SYS
12Carbon, inorganic, dissolvedDICµmol/kgKeul, NinaPhotometrically using autoanalyzer QUAATRO
13Bicarbonate ion[HCO3]-µmol/kgKeul, NinaCalculated using CO2SYS
14Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)pCO2water_SST_wetµatmKeul, NinaCalculated using CO2SYS
15Calcite saturation stateOmega CalKeul, NinaCalculated using CO2SYS
16Carbonate system computation flagCSC flagNisumaa, Anne-MarinCalculated using seacarb after Nisumaa et al. (2010)
17Carbon dioxideCO2µmol/kgNisumaa, Anne-MarinCalculated using seacarb after Nisumaa et al. (2010)
18Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)pCO2water_SST_wetµatmNisumaa, Anne-MarinCalculated using seacarb after Nisumaa et al. (2010)
19Fugacity of carbon dioxide (water) at sea surface temperature (wet air)fCO2water_SST_wetµatmNisumaa, Anne-MarinCalculated using seacarb after Nisumaa et al. (2010)
20Bicarbonate ion[HCO3]-µmol/kgNisumaa, Anne-MarinCalculated using seacarb after Nisumaa et al. (2010)
21Carbonate ion[CO3]2-µmol/kgNisumaa, Anne-MarinCalculated using seacarb after Nisumaa et al. (2010)
22Alkalinity, totalATµmol/kgNisumaa, Anne-MarinCalculated using seacarb after Nisumaa et al. (2010)
23Aragonite saturation stateOmega ArgNisumaa, Anne-MarinCalculated using seacarb after Nisumaa et al. (2010)
24Calcite saturation stateOmega CalNisumaa, Anne-MarinCalculated using seacarb after Nisumaa et al. (2010)
Size:
4897 data points

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