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Büdenbender, Jan; Riebesell, Ulf; Form, Armin (2014): Calcification of the Arctic coralline red algae Lithothamnion glaciale in response to elevated CO2. doi:10.1594/PANGAEA.834495,
Supplement to: Büdenbender, J et al. (2011): Calcification of the Arctic coralline red algae Lithothamnion glaciale in response to elevated CO2. Marine Ecology Progress Series, 441, 79-87, doi:10.3354/meps09405

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Abstract:
Rising atmospheric CO2 concentrations could cause a calcium carbonate subsaturation of Arctic surface waters in the next 20 yr, making these waters corrosive for calcareous organisms. It is presently unknown what effects this will have on Arctic calcifying organisms and the ecosystems of which they are integral components. So far, acidification effects on crustose coralline red algae (CCA) have only been studied in tropical and Mediterranean species. In this work, we investigated calcification rates of the CCA Lithothamnion glaciale collected in northwest Svalbard in laboratory experiments under future atmospheric CO2 concentrations. The algae were exposed to simulated Arctic summer and winter light conditions in 2 separate experiments at optimum growth temperatures. We found a significant negative effect of increased CO2 levels on the net calcification rates of L. glaciale in both experiments. Annual mean net dissolution of L. glaciale was estimated to start at an aragonite saturation state between 1.1 and 0.9 which is projected to occur in parts of the Arctic surface ocean between 2030 and 2050 if emissions follow 'business as usual' scenarios (SRES A2; IPCC 2007). The massive skeleton of CCA, which consist of more than 80% calcium carbonate, is considered crucial to withstanding natural stresses such as water movement, overgrowth or grazing. The observed strong negative response of this Arctic CCA to increased CO2 levels suggests severe threats of the projected ocean acidification for an important habitat provider in the Arctic coastal ocean.
Further details:
Lavigne, Héloise; Epitalon, Jean-Marie; Gattuso, Jean-Pierre (2014): seacarb: seawater carbonate chemistry with R. R package version 3.0. https://cran.r-project.org/package=seacarb
Comment:
In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Lavigne et al, 2014) 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). The date of carbonate chemistry calculation is 2014-07-29.
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethodComment
1SpeciesSpeciesBüdenbender, Jan
2FigureFigBüdenbender, Jan
3DateDateBüdenbender, Jan
4ReplicateReplicateBüdenbender, Jan
5SeasonSeasonBüdenbender, Jan
6TreatmentTreatBüdenbender, Jan
7SalinitySalBüdenbender, Jan
8Temperature, waterTemp°CBüdenbender, Janinput
9Pressure, waterPressdbarBüdenbender, Janinput
10PhosphatePHSPHTµmol/kgBüdenbender, Janinput
11SilicateSILCATµmol/kgBüdenbender, Janinput
12Alkalinity, totalATµmol/kgBüdenbender, JanPotentiometric titrationinput
13pHpHBüdenbender, JanPotentiometricinput, total scale
14Temperature, waterTemp°CBüdenbender, JanCalculated using CO2SYSoutput
15Pressure, waterPressdbarBüdenbender, JanCalculated using CO2SYSoutput
16pHpHBüdenbender, JanCalculated using CO2SYSoutput, total scale
17Fugacity of carbon dioxide (water) at sea surface temperature (wet air)fCO2water_SST_wetµatmBüdenbender, JanCalculated using CO2SYSoutput
18Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)pCO2water_SST_wetµatmBüdenbender, JanCalculated using CO2SYSoutput
19Bicarbonate ion[HCO3]-µmol/kgBüdenbender, JanCalculated using CO2SYSoutput
20Carbonate ion[CO3]2-µmol/kgBüdenbender, JanCalculated using CO2SYSoutput
21Carbon dioxideCO2µmol/kgBüdenbender, JanCalculated using CO2SYSoutput
22BoronBµmol/kgBüdenbender, JanCalculated using CO2SYSalk output
23Hydroxide ionOH-µmol/kgBüdenbender, JanCalculated using CO2SYSalk output
24PhosphorusPmmol/kgBüdenbender, JanCalculated using CO2SYSalk output
25SiliconSimmol/kgBüdenbender, JanCalculated using CO2SYSalk output
26Revelle factorRBüdenbender, JanCalculated using CO2SYSoutput
27Calcite saturation stateOmega CalBüdenbender, JanCalculated using CO2SYSoutput
28Aragonite saturation stateOmega ArgBüdenbender, JanCalculated using CO2SYSoutput
29xCO2 (water) at equilibrator temperature (dry air)xCO2water_equ_dryµmol/molBüdenbender, JanCalculated using CO2SYSoutput
30Net calcification rate of calcium carbonate, per individualNC CaCO3/indµmol/#/dayBüdenbender, Jan
31Carbonate system computation flagCSC flagYang, YanCalculated using seacarb after Nisumaa et al. (2010)
32Carbon dioxideCO2µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
33Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)pCO2water_SST_wetµatmYang, YanCalculated using seacarb after Nisumaa et al. (2010)
34Fugacity of carbon dioxide (water) at sea surface temperature (wet air)fCO2water_SST_wetµatmYang, YanCalculated using seacarb after Nisumaa et al. (2010)
35Bicarbonate ion[HCO3]-µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
36Carbonate ion[CO3]2-µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
37Carbon, inorganic, dissolvedDICµmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
38Aragonite saturation stateOmega ArgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
39Calcite saturation stateOmega CalYang, YanCalculated using seacarb after Nisumaa et al. (2010)
40Calcification rateCalc rate%Yang, YanCalculated using seacarb after Nisumaa et al. (2010)
41Calcification rate, standard deviationCalc rate std dev±Yang, YanCalculated using seacarb after Nisumaa et al. (2010)
Size:
8948 data points

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