Data Description

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Citation:
Keul, N et al. (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, Nina; Langer, Gerald; de Nooijer, Lennart Jan; Bijma, Jelle (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
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
Project(s):
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
1Identification *IDKeul, Nina *
2Ammonia sp., size *Ammonia sp. sizeµmKeul, Nina *Stereomicroscopy (Zeiss Stemi SV 11) *Final length, on Pyser bar scale
3Ammonia sp., weight *Ammonia sp. WµgKeul, Nina *Ultra-Microbalance (Mettler Toledo UMX 2) *Final weight
4Time in days *TimedaysKeul, Nina *In culture
5Ammonia sp., growth rate per individual *Ammonia sp. µ/ind10-2 µg/day/#Keul, Nina *Calculated, see reference(s) *
6Ammonia sp., weight, size normalized *Ammonia sp. W norm10-2 µg/µmKeul, Nina *Calculated, see reference(s) *
7Salinity *SalKeul, Nina *Conductivity and pH meter, pH/Cond 340i (WTW, Weilheim) *
8Temperature, water *Temp°CKeul, Nina *Conductivity and pH meter, pH/Cond 340i (WTW, Weilheim) *
9Carbonate ion *[CO3]2-µmol/kgKeul, Nina *Calculated using CO2SYS *
10pH *pHKeul, Nina *Conductivity and pH meter, pH/Cond 340i (WTW, Weilheim) *Total scale
11Alkalinity, total *ATµmol/kgKeul, Nina *Calculated using CO2SYS *
12Carbon, inorganic, dissolved *DICµmol/kgKeul, Nina *Photometrically using autoanalyzer QUAATRO *
13Bicarbonate ion *[HCO3]-µmol/kgKeul, Nina *Calculated using CO2SYS *
14Partial pressure of carbon dioxide (water) at sea surface temperature (wet air) *pCO2water_SST_wetµatmKeul, Nina *Calculated using CO2SYS *
15Calcite saturation state *Omega CalKeul, Nina *Calculated using CO2SYS *
16Carbonate system computation flag *CSC flagNisumaa, Anne-Marin *Calculated using seacarb after Nisumaa et al. (2010) *
17Carbon dioxide *CO2µmol/kgNisumaa, Anne-Marin *Calculated using seacarb after Nisumaa et al. (2010) *
18Partial pressure of carbon dioxide (water) at sea surface temperature (wet air) *pCO2water_SST_wetµatmNisumaa, Anne-Marin *Calculated using seacarb after Nisumaa et al. (2010) *
19Fugacity of carbon dioxide (water) at sea surface temperature (wet air) *fCO2water_SST_wetµatmNisumaa, Anne-Marin *Calculated using seacarb after Nisumaa et al. (2010) *
20Bicarbonate ion *[HCO3]-µmol/kgNisumaa, Anne-Marin *Calculated using seacarb after Nisumaa et al. (2010) *
21Carbonate ion *[CO3]2-µmol/kgNisumaa, Anne-Marin *Calculated using seacarb after Nisumaa et al. (2010) *
22Alkalinity, total *ATµmol/kgNisumaa, Anne-Marin *Calculated using seacarb after Nisumaa et al. (2010) *
23Aragonite saturation state *Omega ArgNisumaa, Anne-Marin *Calculated using seacarb after Nisumaa et al. (2010) *
24Calcite saturation state *Omega CalNisumaa, Anne-Marin *Calculated using seacarb after Nisumaa et al. (2010) *
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4897 data points

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