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Mekkes, Lisette; Renema, Willem; Alin, Simone R; Feely, Richard A; Huisman, Jef; Roessingh, Peter; Peijnenburg, Katja T C A (2021): Seawater carbonate chemistry and shell thickness, shell dissolution of Limacina helicina pteropods [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.930065

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Abstract:
Shelled pteropods are widely regarded as bioindicators for ocean acidification, because their fragile aragonite shells are susceptible to increasing ocean acidity. While short-term incubations have demonstrated that pteropod calcification is negatively impacted by ocean acidification, we know little about net calcification in response to varying ocean conditions in natural populations. Here, we examine in situ calcification of Limacina helicina pteropods collected from the California Current Ecosystem, a coastal upwelling system with strong spatial gradients in ocean carbonate chemistry, dissolved oxygen and temperature. Depth-averaged pH ranged from 8.03 in warmer offshore waters to 7.77 in cold CO2-rich waters nearshore. Based on high-resolution micro-CT technology, we showed that shell thickness declined by 37% along the upwelling gradient from offshore to nearshore water. Dissolution marks covered only 2% of the shell surface area and were not associated with the observed variation in shell thickness. We thus infer that pteropods make thinner shells where upwelling brings more acidified and colder waters to the surface. Probably the thinner shells do not result from enhanced dissolution, but are due to a decline in calcification. Reduced calcification of pteropods is likely to have major ecological and biogeochemical implications for the cycling of calcium carbonate in the oceans.
Keyword(s):
Animalia; Calcification/Dissolution; Coast and continental shelf; Field observation; Growth/Morphology; Limacina helicina; Mollusca; North Pacific; Pelagos; Single species; Temperate; Upwelling; Zooplankton
Supplement to:
Mekkes, Lisette; Renema, Willem; Bednaršek, Nina; Alin, Simone R; Feely, Richard A; Huisman, Jef; Roessingh, Peter; Peijnenburg, Katja T C A (2021): Pteropods make thinner shells in the upwelling region of the California Current Ecosystem. Scientific Reports, 11(1), https://doi.org/10.1038/s41598-021-81131-9
Further details:
Gattuso, Jean-Pierre; Epitalon, Jean-Marie; Lavigne, Héloïse; Orr, James (2021): seacarb: seawater carbonate chemistry with R. R package version 3.2.16. https://cran.r-project.org/web/packages/seacarb/index.html
Coverage:
Median Latitude: 46.882632 * Median Longitude: -125.666974 * South-bound Latitude: 44.200000 * West-bound Longitude: -130.370000 * North-bound Latitude: 51.830000 * East-bound Longitude: -124.420000
Comment:
In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2021) 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 2021-04-07.
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1TypeTypeMekkes, Lisettestudy
2SpeciesSpeciesMekkes, Lisette
3Registration number of speciesReg spec noMekkes, Lisette
4Uniform resource locator/link to referenceURL refMekkes, LisetteWoRMS Aphia ID
5Station labelStationMekkes, Lisette
6LATITUDELatitudeMekkes, LisetteGeocode
7LONGITUDELongitudeMekkes, LisetteGeocode
8IdentificationIDMekkes, LisetteIndividual
9LocationLocationMekkes, Lisette
10Shell, number of whorlsWhorls No#Mekkes, Lisette
11DiameterصmMekkes, Lisette
12HeighthµmMekkes, Lisette
13Shell thicknessShell thickmmMekkes, Lisetteaverage
14DissolutionDissµm2Mekkes, LisetteType1
15DissolutionDissµm2Mekkes, LisetteType2
16DissolutionDissµm2Mekkes, LisetteType3
17Shell surface areaShell SAµm2Mekkes, Lisette
18SalinitySalMekkes, Lisette
19Temperature, waterTemp°CMekkes, Lisette
20Carbon, inorganic, dissolvedDICµmol/kgMekkes, Lisette
21Alkalinity, totalATµmol/kgMekkes, Lisette
22SilicateSi(OH)4µmol/kgMekkes, Lisette
23Phosphate[PO4]3-µmol/kgMekkes, Lisette
24Carbonate system computation flagCSC flagYang, YanCalculated using seacarb after Nisumaa et al. (2010)
25pHpHYang, YanCalculated using seacarb after Nisumaa et al. (2010)total scale
26Carbon dioxideCO2µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
27Fugacity of carbon dioxide (water) at sea surface temperature (wet air)fCO2water_SST_wetµatmYang, YanCalculated using seacarb after Nisumaa et al. (2010)
28Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)pCO2water_SST_wetµatmYang, YanCalculated using seacarb after Nisumaa et al. (2010)
29Bicarbonate ion[HCO3]-µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
30Carbonate ion[CO3]2-µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
31Aragonite saturation stateOmega ArgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
32Calcite saturation stateOmega CalYang, YanCalculated using seacarb after Nisumaa et al. (2010)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
2250 data points

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