Data Description

Citation:
Büdenbender, J et al. (2014): Calcification of the Arctic coralline red algae Lithothamnion glaciale in response to elevated CO2. doi:10.1594/PANGAEA.834495,
Supplement to: Büdenbender, Jan; Riebesell, Ulf; Form, Armin (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
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 *
Project(s):
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
1Species *SpeciesBüdenbender, Jan *
2Figure *FigBüdenbender, Jan *
3Date *DateBüdenbender, Jan *
4Replicate *ReplicateBüdenbender, Jan *
5Season *SeasonBüdenbender, Jan *
6Treatment *TreatmBüdenbender, Jan *
7Salinity *SalBüdenbender, Jan *
8Temperature, water *Temp°CBüdenbender, Jan *input
9Pressure, water *PressdbarBüdenbender, Jan *input
10Phosphate *PHSPHTµmol/kgBüdenbender, Jan *input
11Silicate *SILCATµmol/kgBüdenbender, Jan *input
12Alkalinity, total *ATµmol/kgBüdenbender, Jan *Potentiometric titration *input
13pH *pHBüdenbender, Jan *Potentiometric *input, total scale
14Temperature, water *Temp°CBüdenbender, Jan *Calculated using CO2SYS *output
15Pressure, water *PressdbarBüdenbender, Jan *Calculated using CO2SYS *output
16pH *pHBüdenbender, Jan *Calculated using CO2SYS *output, total scale
17Fugacity of carbon dioxide (water) at sea surface temperature (wet air) *fCO2water_SST_wetµatmBüdenbender, Jan *Calculated using CO2SYS *output
18Partial pressure of carbon dioxide (water) at sea surface temperature (wet air) *pCO2water_SST_wetµatmBüdenbender, Jan *Calculated using CO2SYS *output
19Bicarbonate ion *[HCO3]-µmol/kgBüdenbender, Jan *Calculated using CO2SYS *output
20Carbonate ion *[CO3]2-µmol/kgBüdenbender, Jan *Calculated using CO2SYS *output
21Carbon dioxide *CO2µmol/kgBüdenbender, Jan *Calculated using CO2SYS *output
22Boron *Bµmol/kgBüdenbender, Jan *Calculated using CO2SYS *alk output
23Hydroxide ion *OH-µmol/kgBüdenbender, Jan *Calculated using CO2SYS *alk output
24Phosphorus *Pmmol/kgBüdenbender, Jan *Calculated using CO2SYS *alk output
25Silicon *Simmol/kgBüdenbender, Jan *Calculated using CO2SYS *alk output
26Revelle factor *RBüdenbender, Jan *Calculated using CO2SYS *output
27Calcite saturation state *Omega CalBüdenbender, Jan *Calculated using CO2SYS *output
28Aragonite saturation state *Omega ArgBüdenbender, Jan *Calculated using CO2SYS *output
29xCO2 (water) at equilibrator temperature (dry air) *xCO2water_equ_dryµmol/molBüdenbender, Jan *Calculated using CO2SYS *output
30Net calcification rate of calcium carbonate, per individual *NC CaCO3/indµmol/#/dayBüdenbender, Jan *
31Carbonate system computation flag *CSC flagYang, Yan *Calculated using seacarb after Nisumaa et al. (2010) *
32Carbon dioxide *CO2µmol/kgYang, Yan *Calculated using seacarb after Nisumaa et al. (2010) *
33Partial pressure of carbon dioxide (water) at sea surface temperature (wet air) *pCO2water_SST_wetµatmYang, Yan *Calculated using seacarb after Nisumaa et al. (2010) *
34Fugacity of carbon dioxide (water) at sea surface temperature (wet air) *fCO2water_SST_wetµatmYang, Yan *Calculated using seacarb after Nisumaa et al. (2010) *
35Bicarbonate ion *[HCO3]-µmol/kgYang, Yan *Calculated using seacarb after Nisumaa et al. (2010) *
36Carbonate ion *[CO3]2-µmol/kgYang, Yan *Calculated using seacarb after Nisumaa et al. (2010) *
37Carbon, inorganic, dissolved *DICµmol/kgYang, Yan *Calculated using seacarb after Nisumaa et al. (2010) *
38Aragonite saturation state *Omega ArgYang, Yan *Calculated using seacarb after Nisumaa et al. (2010) *
39Calcite saturation state *Omega CalYang, Yan *Calculated using seacarb after Nisumaa et al. (2010) *
40Calcification rate *Calc rate%Yang, Yan *Calculated using seacarb after Nisumaa et al. (2010) *
41Calcification rate, standard deviation *Calc rate std dev±Yang, Yan *Calculated using seacarb after Nisumaa et al. (2010) *
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