Data Description

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Citation:
Ragazzola, F et al. (2012): Seawater carbonate chemistry and structural integrity of the coralline algae Lithothamnion glaciale in a laboratory experiment. doi:10.1594/PANGAEA.823460,
Supplement to: Ragazzola, Federica; Foster, Laura C; Form, Armin; Anderson, Phillip S L; Hansteen, Thor H; Fietzke, Jan (2012): Ocean acidification weakens the structural integrity of coralline algae. Global Change Biology, 18(9), 2804-2812, doi:10.1111/j.1365-2486.2012.02756.x
Abstract:
The uptake of anthropogenic emission of carbon dioxide is resulting in a lowering of the carbonate saturation state and a drop in ocean pH. Understanding how marine calcifying organisms such as coralline algae may acclimatize to ocean acidification is important to understand their survival over the coming century. We present the first long-term perturbation experiment on the cold-water coralline algae, which are important marine calcifiers in the benthic ecosystems particularly at the higher latitudes. Lithothamnion glaciale, after three months incubation, continued to calcify even in undersaturated conditions with a significant trend towards lower growth rates with increasing pCO2. However, the major changes in the ultra-structure occur by 589 µatm (i.e. in saturated waters). Finite element models of the algae grown at these heightened levels show an increase in the total strain energy of nearly an order of magnitude and an uneven distribution of the stress inside the skeleton when subjected to similar loads as algae grown at ambient levels. This weakening of the structure is likely to reduce the ability of the alga to resist boring by predators and wave energy with severe consequences to the benthic community structure in the immediate future (50 years).
Further details:
Lavigne, Héloise; Gattuso, Jean-Pierre (2011): seacarb: seawater carbonate chemistry with R. R package version 2.4. https://cran.r-project.org/package=seacarb *
Project(s):
Coverage:
Latitude: 57.010160 * Longitude: 11.583160
Date/Time Start: 2010-06-01T00:00:00 * Date/Time End: 2010-06-30T00:00:00
Minimum Elevation: -20.0 m * Maximum Elevation: -20.0 m
Event(s):
Kattegat_OA * * Latitude: 57.010160 * Longitude: 11.583160 * Date/Time Start: 2010-06-01T00:00:00 * Date/Time End: 2010-06-30T00:00:00 * Elevation: -20.0 m * Device: Experiment (EXP) *
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). The date of carbonate chemistry calculation by seacarb is 2013-11-29.
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethodComment
1Species *SpeciesRagazzola, Federica *
2Treatment *TreatmRagazzola, Federica *
3Growth rate *µmm/aRagazzola, Federica *
4Growth rate, standard deviation *µ std dev±Ragazzola, Federica *
5Coralline algae, wall thickness, intra filament *Wall thick intraµmRagazzola, Federica *
6Coralline algae, wall thickness, intra filament, standard deviation *Wall thick intra std dev±Ragazzola, Federica *
7Coralline algae, wall thickness, intra filament *Wall thick intraµmRagazzola, Federica *
8Coralline algae, wall thickness, inter filament, standard deviation *Wall thick inter std dev±Ragazzola, Federica *
9Cell density *Cells#/µm2Ragazzola, Federica *
10Cell density, standard deviation *Cells std dev±Ragazzola, Federica *
11pH *pHRagazzola, Federica *Potentiometric *free scale
12pH, standard deviation *pH std dev±Ragazzola, Federica *Potentiometric *free scale
13Salinity *SalRagazzola, Federica *
14Salinity, standard deviation *Sal std dev±Ragazzola, Federica *
15Temperature, water *Temp°CRagazzola, Federica *
16Temperature, standard deviation *T std dev±Ragazzola, Federica *
17Alkalinity, total *ATµmol/kgRagazzola, Federica *Potentiometric titration *
18Alkalinity, total, standard deviation *AT std dev±Ragazzola, Federica *
19Carbon, inorganic, dissolved *DICµmol/kgRagazzola, Federica *Calculated using CO2SYS *
20Carbon, inorganic, dissolved, standard deviation *DIC std dev±Ragazzola, Federica *Calculated using CO2SYS *
21Bicarbonate ion *[HCO3]-µmol/kgRagazzola, Federica *Calculated using CO2SYS *
22Bicarbonate ion, standard deviation *[HCO3]- std dev±Ragazzola, Federica *Calculated using CO2SYS *
23Calcite saturation state *Omega CalRagazzola, Federica *Calculated using CO2SYS *
24Calcite saturation state, standard deviation *Omega Cal std dev±Ragazzola, Federica *Calculated using CO2SYS *
25Aragonite saturation state *Omega ArgRagazzola, Federica *Calculated using CO2SYS *
26Aragonite saturation state, standard deviation *Omega Arg std dev±Ragazzola, Federica *Calculated using CO2SYS *
27Partial pressure of carbon dioxide (water) at sea surface temperature (wet air) *pCO2water_SST_wetµatmRagazzola, Federica *Calculated using CO2SYS *
28Partial pressure of carbon dioxide, standard deviation *pCO2 std dev±Ragazzola, Federica *Calculated using CO2SYS *
29Carbonate system computation flag *CSC flagYang, Yan *Calculated using seacarb after Nisumaa et al. (2010) *
30pH *pHYang, Yan *Calculated using seacarb after Nisumaa et al. (2010) *total scale
31Carbon dioxide *CO2µmol/kgYang, Yan *Calculated using seacarb after Nisumaa et al. (2010) *
32Partial pressure of carbon dioxide (water) at sea surface temperature (wet air) *pCO2water_SST_wetµatmYang, Yan *Calculated using seacarb after Nisumaa et al. (2010) *
33Fugacity of carbon dioxide (water) at sea surface temperature (wet air) *fCO2water_SST_wetµatmYang, Yan *Calculated using seacarb after Nisumaa et al. (2010) *
34Bicarbonate ion *[HCO3]-µmol/kgYang, Yan *Calculated using seacarb after Nisumaa et al. (2010) *
35Carbonate ion *[CO3]2-µmol/kgYang, Yan *Calculated using seacarb after Nisumaa et al. (2010) *
36Carbon, inorganic, dissolved *DICµmol/kgYang, Yan *Calculated using seacarb after Nisumaa et al. (2010) *
37Aragonite saturation state *Omega ArgYang, Yan *Calculated using seacarb after Nisumaa et al. (2010) *
38Calcite saturation state *Omega CalYang, Yan *Calculated using seacarb after Nisumaa et al. (2010) *
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152 data points

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