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Nash, Merinda C; Martin, Sophie; Gattuso, Jean-Pierre (2016): Mineralogical response of the Mediterranean crustose coralline alga Lithophyllum cabiochae to near-future ocean acidification and warming [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.873857, Supplement to: Nash, MC et al. (2016): Mineralogical response of the Mediterranean crustose coralline alga Lithophyllum cabiochae to near-future ocean acidification and warming. Biogeosciences, 13(21), 5937-5945, https://doi.org/10.5194/bg-13-5937-2016

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Abstract:
Red calcareous coralline algae are thought to be among the organisms most vulnerable to ocean acidification due to the high solubility of their magnesium calcite skeleton. Although skeletal mineralogy is proposed to change as CO2 and temperature continue to rise, there is currently very little information available on the response of coralline algal carbonate mineralogy to near-future changes in pCO2 and temperature. Here we present results from a 1-year controlled laboratory experiment to test mineralogical responses to pCO2 and temperature in the Mediterranean crustose coralline alga (CCA) Lithophyllum cabiochae. Our results show that Mg incorporation is mainly constrained by temperature (+1 mol % MgCO3 for an increase of 3 °C), and there was no response to pCO2. This suggests that L. cabiochae thalli have the ability to buffer their calcifying medium against ocean acidification, thereby enabling them to continue to deposit magnesium calcite with a significant mol % MgCO3 under elevated pCO2. Analyses of CCA dissolution chips showed a decrease in Mg content after 1 year for all treatments, but this was affected neither by pCO2 nor by temperature. Our findings suggest that biological processes exert a strong control on calcification on magnesium calcite and that CCA may be more resilient under rising CO2 than previously thought. However, previously demonstrated increased skeletal dissolution with ocean acidification will still have major consequences for the stability and maintenance of Mediterranean coralligenous habitats.
Keyword(s):
Benthos; Calcification/Dissolution; Coast and continental shelf; Containers and aquaria (20-1000 L or < 1 m**2); Growth/Morphology; Laboratory experiment; Lithophyllum cabiochae; Macroalgae; Mediterranean Sea; Plantae; Rhodophyta; Single species; Temperate
Further details:
Lavigne, Héloïse; Gattuso, Jean-Pierre (2011): seacarb: seawater carbonate chemistry with R. R package version 2.4. https://cran.r-project.org/package=seacarb
Project(s):
Ocean Acidification International Coordination Centre (OA-ICC)
Coverage:
Latitude: 43.678830 * Longitude: 7.323170
Date/Time Start: 2006-07-10T00:00:00 * Date/Time End: 2007-07-10T00:00:00
Minimum Elevation: -25.0 m * Maximum Elevation: -25.0 m
Event(s):
Villefranche * Latitude: 43.678830 * Longitude: 7.323170 * Date/Time Start: 2006-07-10T00:00:00 * Date/Time End: 2007-07-10T00:00:00 * Elevation: -25.0 m * Location: Mediterranean Sea * Method/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 2013-11-27.
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1TypeTypeNash, Merinda Cstudy
2SpeciesSpeciesNash, Merinda C
3Registration number of speciesReg spec noNash, Merinda C
4Uniform resource locator/link to referenceURL refNash, Merinda CWoRMS Aphia ID
5DescriptionDescriptionNash, Merinda C
6TreatmentTreatNash, Merinda C
7ReplicateReplNash, Merinda C
8Magnesium carbonate, magnesiteMgCO3%Nash, Merinda C
9AsymmetryAsymmetryNash, Merinda Cmol% MgCO3
10DifferenceDiffNash, Merinda CAsymmetry
11pHpHNash, Merinda Ctotal scale
12pH, standard errorpH std e±Nash, Merinda Ctotal scale
13Alkalinity, totalATµmol/kgNash, Merinda C
14Alkalinity, total, standard errorAT std e±Nash, Merinda C
15Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)pCO2water_SST_wetµatmNash, Merinda CCalculated using seacarb
16Partial pressure of carbon dioxide (water) at sea surface temperature (wet air), standard errorpCO2water_SST_wet std e±Nash, Merinda CCalculated using seacarb
17Carbon dioxideCO2µmol/kgNash, Merinda CCalculated using seacarb
18Carbon dioxide, standard errorCO2 std e±Nash, Merinda CCalculated using seacarb
19Carbonate ion[CO3]2-µmol/kgNash, Merinda CCalculated using seacarb
20Carbonate ion, standard error[CO3]2- std e±Nash, Merinda CCalculated using seacarb
21Bicarbonate ion[HCO3]-µmol/kgNash, Merinda CCalculated using seacarb
22Bicarbonate ion, standard error[HCO3]- std e±Nash, Merinda CCalculated using seacarb
23Carbon, inorganic, dissolvedDICµmol/kgNash, Merinda CCalculated using seacarb
24Carbon, inorganic, dissolved, standard deviationDIC std dev±Nash, Merinda CCalculated using seacarb
25Calcite saturation stateOmega CalNash, Merinda CCalculated using seacarb
26Calcite saturation state, standard deviationOmega Cal std dev±Nash, Merinda CCalculated using seacarb
27Aragonite saturation stateOmega ArgNash, Merinda CCalculated using seacarb
28Aragonite saturation state, standard errorOmega Arg std e±Nash, Merinda CCalculated using seacarb
29Temperature, waterTemp°CNash, Merinda C
30SalinitySalNash, Merinda C
31Carbonate system computation flagCSC flagYang, YanCalculated using seacarb after Nisumaa et al. (2010)
32Carbon dioxideCO2µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
33Fugacity of carbon dioxide (water) at sea surface temperature (wet air)fCO2water_SST_wetµatmYang, YanCalculated using seacarb after Nisumaa et al. (2010)
34Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)pCO2water_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)
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
3680 data points

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