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Hikami, Mana; Ushie, Hiroyuki; Irie, Takahiro; Fujita, Kazuhiko; Kuroyanagi, Azumi; Sakai, Kazuhiko; Nojiri, Yukihiro; Suzuki, Atsushi; Kawahata, Hodaka (2011): Seawater carbonate chemistry and biological processes of Amphisorus hemprichii, Amphisorus kudakajimensis and Calcarina gaudichaudii during experiments, 2011. PANGAEA, https://doi.org/10.1594/PANGAEA.771572, Supplement to: Hikami, M et al. (2011): Contrasting calcification responses to ocean acidification between two reef foraminifers harboring different algal symbionts. Geophysical Research Letters, 38, L19601, https://doi.org/10.1029/2011GL048501

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Abstract:
Ocean acidification, which like global warming is an outcome of anthropogenic CO2emissions, severely impacts marine calcifying organisms, especially those living in coral reef ecosystems. However, knowledge about the responses of reef calcifiers to ocean acidification is quite limited, although coral responses are known to be generally negative. In a culture experiment with two algal symbiont-bearing, reef-dwelling foraminifers, Amphisorus kudakajimensis and Calcarina gaudichaudii, in seawater under five different pCO2 conditions, 245, 375, 588, 763 and 907 µatm, maintained with a precise pCO2-controlling technique, net calcification of A. kudakajimensis was reduced under higher pCO2, whereas calcification of C. gaudichaudii generally increased with increased pCO2. In another culture experiment conducted in seawater in which bicarbonate ion concentrations were varied under a constant carbonate ion concentration, calcification was not significantly different between treatments in Amphisorus hemprichii, a species closely related to A. kudakajimensis, or in C. gaudichaudii. From these results, we concluded that carbonate ion and CO2 were the carbonate species that most affected growth ofAmphisorus and Calcarina, respectively. The opposite responses of these two foraminifer genera probably reflect different sensitivities to these carbonate species, which may be due to their different symbiotic algae.
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethodComment
1IdentificationIDHikami, Mana
2SpeciesSpeciesHikami, Mana
3Experimental treatmentExp treatHikami, Mana
4Time, incubationT incubationdayHikami, Mana
5SalinitySalHikami, Mana
6Temperature, waterTemp°CHikami, Mana
7pHpHHikami, ManapH meter (Metrohm, 826 pH mobile)Total scale
8Alkalinity, totalATµmol/kgHikami, ManaAlkalinity, Gran titration (Gran, 1950)
9Carbon, inorganic, dissolvedDICµmol/kgHikami, ManaCalculated using CO2SYS
10Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)pCO2water_SST_wetµatmHikami, ManaCalculated using CO2SYS
11Bicarbonate ion[HCO3]-µmol/kgHikami, ManaCalculated using CO2SYS
12Carbonate ion[CO3]2-µmol/kgHikami, ManaCalculated using CO2SYS
13Carbon dioxideCO2µmol/kgHikami, ManaCalculated using CO2SYS
14Calcite saturation stateOmega CalHikami, ManaCalculated using CO2SYS
15Aragonite saturation stateOmega ArgHikami, ManaCalculated using CO2SYS
16Amphisorus kudakajimensis, shell weight, least square meanA. kudakajimensis WµgHikami, ManaThermo Cahn C-35 microbalance
17Amphisorus kudakajimensis, shell weight, least square, standard errorA. kudakajimensis w std e±Hikami, Mana
18Calcarina gaudichaudii, shell weight, least square meanC. gaudichaudii WµgHikami, ManaThermo Cahn C-35 microbalance
19Calcarina gaudichaudii, shell weight, least square, standard errorC. gaudichaudii W std e±Hikami, Mana
20Amphisorus hemprichii, shell weight, least square meanA. hemprichii WµgHikami, ManaThermo Cahn C-35 microbalance
21Amphisorus hemprichii, shell weight, least square, standard errorA. hemprichii W std e±Hikami, Mana
22Carbonate system computation flagCSC flagNisumaa, Anne-MarinCalculated using seacarb after Nisumaa et al. (2010)
23Carbon dioxideCO2µmol/kgNisumaa, Anne-MarinCalculated using seacarb after Nisumaa et al. (2010)
24Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)pCO2water_SST_wetµatmNisumaa, Anne-MarinCalculated using seacarb after Nisumaa et al. (2010)
25Fugacity of carbon dioxide (water) at sea surface temperature (wet air)fCO2water_SST_wetµatmNisumaa, Anne-MarinCalculated using seacarb after Nisumaa et al. (2010)
26Bicarbonate ion[HCO3]-µmol/kgNisumaa, Anne-MarinCalculated using seacarb after Nisumaa et al. (2010)
27Carbonate ion[CO3]2-µmol/kgNisumaa, Anne-MarinCalculated using seacarb after Nisumaa et al. (2010)
28Carbon, inorganic, dissolvedDICµmol/kgNisumaa, Anne-MarinCalculated using seacarb after Nisumaa et al. (2010)
29Aragonite saturation stateOmega ArgNisumaa, Anne-MarinCalculated using seacarb after Nisumaa et al. (2010)
30Calcite saturation stateOmega CalNisumaa, Anne-MarinCalculated using seacarb after Nisumaa et al. (2010)
Size:
520 data points

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