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Moulin, Laure; Grosjean, Philippe; Leblud, Julien; Batigny, Antoine; Dubois, Philippe (2014): Impact of elevated pCO2 on acid-base regulation of the sea urchin Echinometra mathaei and its relation to resistance to ocean acidification: A study in mesocosms [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.836066, Supplement to: Moulin, L et al. (2014): Impact of elevated pCO2 on acid–base regulation of the sea urchin Echinometra mathaei and its relation to resistance to ocean acidification: A study in mesocosms. Journal of Experimental Marine Biology and Ecology, 457, 97-104, https://doi.org/10.1016/j.jembe.2014.04.007

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Published: 2014-09-19 • DOI registered: 2014-10-17

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Abstract:
Due to their low metabolism and apparent poor ion regulation ability, sea urchins could be particularly sensitive to ocean acidification resulting from increased dissolution of atmospheric carbon dioxide. Therefore, we evaluated the acid-base regulation ability of the coral reef sea urchin Echinometra mathaei and the impact of decreased pH on its growth and respiration activity. The study was conducted in two identical artificial reef mesocosms during seven weeks. Experimental tanks were maintained respectively at mean pHT 7.7 and 8.05 (with field-like night and day variations). The major physico-chemical parameters were identical, only pCO2 and pHT differed. Results indicate that E. mathaei can regulate the pH of its coelomic fluid in the considered range of pH, allowing a sustainable growth and ensuring an unaffected respiratory metabolism, at least at short term.
Keyword(s):
Acid-base regulation; Animalia; Benthic animals; Benthos; Coast and continental shelf; Containers and aquaria (20-1000 L or < 1 m**2); Echinodermata; Echinometra mathaei; Growth/Morphology; Indian Ocean; Laboratory experiment; Respiration; Single species; Tropical
Further details:
Lavigne, Héloïse; Epitalon, Jean-Marie; Gattuso, Jean-Pierre (2014): seacarb: seawater carbonate chemistry with R. R package version 3.0 [webpage]. https://cran.r-project.org/package=seacarb
Project(s):
Ocean Acidification International Coordination Centre (OA-ICC)
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 2014-09-16.
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1FigureFigMoulin, Laure
2SpeciesSpeciesMoulin, Laure
3IdentificationIDMoulin, Lauremesocosm
4pH, total scalepHTMoulin, LaurePotentiometricseawater, total scale
5Aquarium numberAquariumMoulin, Laure
6Individual codeIndividual codeMoulin, Laure
7GrowthGrowth%Moulin, Laureas percentage of the initial skeletonweight
8Respiration rate, oxygenResp O2µmol/g/hMoulin, Laureper wet weight
9IdentificationIDMoulin, Laurerespirometer
10DateDateMoulin, Laure
11Incubation durationInc durdaysMoulin, Laure
12Coelomic fluid, pHpH (cf)Moulin, LaurePotentiometrictotal scale
13Coelomic fluid, alkalinityAT (cf)µmol/kgMoulin, LaurePotentiometric titration
14Coelomic fluid, partial pressure of carbon dioxidepCO2 (cf)µatmMoulin, LaureInfrared spectrometric
15Alkalinity, totalATµmol/kgMoulin, LaurePotentiometric titrationseawater
16Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)pCO2water_SST_wetµatmMoulin, LaureCalculated using seacarbseawater
17SalinitySalMoulin, Laureseawater
18Temperature, waterTemp°CMoulin, Laureseawater
19Coelomic fluid, alkalinityAT (cf)µmol/kgMoulin, LaureCalculated
20Carbonate system computation flagCSC flagYang, YanCalculated using seacarb after Nisumaa et al. (2010)
21Carbon dioxideCO2µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
22Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)pCO2water_SST_wetµatmYang, YanCalculated using seacarb after Nisumaa et al. (2010)
23Fugacity of carbon dioxide (water) at sea surface temperature (wet air)fCO2water_SST_wetµatmYang, YanCalculated using seacarb after Nisumaa et al. (2010)
24Bicarbonate ion[HCO3]-µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
25Carbonate ion[CO3]2-µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
26Carbon, inorganic, dissolvedDICµmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
27Aragonite saturation stateOmega ArgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
28Calcite 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:
3152 data points

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