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Wright, John M; Parker, Laura M; O'Connor, Wayne A; Williams, Mark; Kube, Peter; Ross, Pauline M (2014): Populations of Pacific Oysters Crassostrea gigas Respond Variably to Elevated CO2 and Predation by Morula marginalba [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.840478, Supplement to: Wright, JM et al. (2014): Populations of pacific oysters Crassostrea gigas respond variably to rlevated CO2 and predation by Morula marginalba. Biological Bulletin, 226, 269-281, https://doi.org/10.1086/BBLv226n3p269

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Abstract:
Ocean acidification is anticipated to decrease calcification and increase dissolution of shelled molluscs. Molluscs with thinner and weaker shells may be more susceptible to predation, but not all studies have measured negative responses of molluscs to elevated pCO2. Recent studies measuring the response of molluscs have found greater variability at the population level than first expected. Here we investigate the impact of acidification on the predatory whelk Morula marginalba and genetically distinct subpopulations of the Pacific oyster Crassostrea gigas. Whelks and eight family lines of C. gigas were separately exposed to ambient (385 ppm) and elevated (1000 ppm) pCO2 for 6 weeks. Following this period, individuals of M. marginalba were transferred into tanks with oysters at ambient and elevated pCO2 for 17 days. The increase in shell height of the oysters was on average 63% less at elevated compared to ambient pCO2. There were differences in shell compression strength, thickness, and mass among family lines of C. gigas, with sometimes an interaction between pCO2 and family line. Against expectations, this study found increased shell strength in the prey and reduced shell strength in the predator at elevated compared to ambient pCO2. After 10 days, the whelks consumed significantly more oysters regardless of whether C. gigas had been exposed to ambient or elevated CO2, but this was not dependent on the family line and the effect was not significant after 17 days. Our study found an increase in predation after exposure of the predator to predicted near-future levels of estuarine pCO2.
Keyword(s):
Animalia; Behaviour; Benthic animals; Benthos; Coast and continental shelf; Containers and aquaria (20-1000 L or < 1 m**2); Crassostrea gigas; Growth/Morphology; Laboratory experiment; Mollusca; Other studied parameter or process; Respiration; Single species; South Pacific; Species interaction; Temperate
Further details:
Lavigne, Héloïse; 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):
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 2014-12-04.
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1SpeciesSpeciesRoss, Pauline M
2Incubation durationInc durweeksRoss, Pauline M
3Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)pCO2water_SST_wetppmvRoss, Pauline M
4IdentificationIDRoss, Pauline Mfamily line
5IdentificationIDRoss, Pauline Mtank
6HeighthmmRoss, Pauline M
7Compression strengthCompression strN/mmRoss, Pauline M
8Metabolic rate of oxygenMR O2mg/kg/hRoss, Pauline Mstandard
9HeighthmmRoss, Pauline Maverage,after 8 weeks of exposure
10Height, standard errorh std e±Ross, Pauline M
11Compression strengthCompression strN/mmRoss, Pauline Maverage,after 8 weeks of exposure
12Compression strength, standard errorCompression str std e±Ross, Pauline M
13Metabolic rate of oxygenMR O2mg/kg/hRoss, Pauline Maverage,after 8 weeks of exposure
14Metabolic rate of oxygen, standard errorMR O2 std e±Ross, Pauline M
15IndividualsInd#Ross, Pauline Moysters consumed, after 10 days
16Individuals, standard errorInd std e±Ross, Pauline Moysters consumed, after 10 days
17SalinitySalRoss, Pauline M
18Salinity, standard errorSal std e±Ross, Pauline M
19Temperature, waterTemp°CRoss, Pauline M
20Temperature, water, standard errorT std e±Ross, Pauline M
21pHpHRoss, Pauline MPotentiometricNBS scale
22pH, standard errorpH std e±Ross, Pauline MPotentiometricNBS scale
23Alkalinity, totalATµmol/kgRoss, Pauline MPotentiometric titration
24Alkalinity, total, standard errorAT std e±Ross, Pauline MPotentiometric titration
25Carbonate system computation flagCSC flagYang, YanCalculated using seacarb after Nisumaa et al. (2010)
26pHpHYang, YanCalculated using seacarb after Nisumaa et al. (2010)total scale
27Carbon dioxideCO2µmol/kgYang, 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)
29Fugacity of carbon dioxide (water) at sea surface temperature (wet air)fCO2water_SST_wetµatmYang, YanCalculated using seacarb after Nisumaa et al. (2010)
30Bicarbonate ion[HCO3]-µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
31Carbonate ion[CO3]2-µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
32Carbon, inorganic, dissolvedDICµmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
33Aragonite saturation stateOmega ArgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
34Calcite 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:
37864 data points

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