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Couturier, Christine S; Stecyk, Jonathan A W; Rummer, Jodie L; Munday, Philip L; Nilsson, Göran E (2013): Seawater carbonate chemistry, thickness and carbonate elemental composition of the test of juvenile sea urchins in a laboratory experiment [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.833354, Supplement to: Couturier, CS et al. (2013): Species-specific effects of near-future CO2 on the respiratory performance of two tropical prey fish and their predator. Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology, 166(3), 482-489, https://doi.org/10.1016/j.cbpa.2013.07.025

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Abstract:
Ocean surface CO2 levels are increasing in line with rising atmospheric CO2 and could exceed 900 µatm by year 2100, with extremes above 2000 µatm in some coastal habitats. The imminent increase in ocean pCO2 is predicted to have negative consequences for marine fishes, including reduced aerobic performance, but variability among species could be expected. Understanding interspecific responses to ocean acidification is important for predicting the consequences of ocean acidification on communities and ecosystems. In the present study, the effects of exposure to near-future seawater CO2 (860 µatm) on resting (M O2rest) and maximum (M O2max) oxygen consumption rates were determined for three tropical coral reef fish species interlinked through predator-prey relationships: juvenile Pomacentrus moluccensis and Pomacentrus amboinensis, and one of their predators: adult Pseudochromis fuscus. Contrary to predictions, one of the prey species, P. amboinensis, displayed a 28-39% increase in M O2max after both an acute and four-day exposure to near-future CO2 seawater, while maintaining M O2rest. By contrast, the same treatment had no significant effects on M O2rest or M O2max of the other two species. However, acute exposure of P. amboinensis to 1400 and 2400 µatm CO2 resulted in M O2max returning to control values. Overall, the findings suggest that: (1) the metabolic costs of living in a near-future CO2 seawater environment were insignificant for the species examined at rest; (2) the M O2max response of tropical reef species to near-future CO2 seawater can be dependent on the severity of external hypercapnia; and (3) near-future ocean pCO2 may not be detrimental to aerobic scope of all fish species and it may even augment aerobic scope of some species. The present results also highlight that close phylogenetic relatedness and living in the same environment, does not necessarily imply similar physiological responses to near-future CO2.
Keyword(s):
Animalia; Chordata; Coast and continental shelf; Containers and aquaria (20-1000 L or < 1 m**2); Laboratory experiment; Nekton; Pelagos; Pomacentrus amboinensis; Pomacentrus moluccensis; Pseudochromis fuscus; Respiration; Single species; South Pacific; 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
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 2014-06-12.
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1FigureFigCouturier, Christine S
2SpeciesSpeciesCouturier, Christine S
3TreatmentTreatCouturier, Christine S
4Respiration rate, oxygenResp O2mg/kg/hCouturier, Christine Sresting
5Respiration rate, oxygen, standard errorResp O2 std e±Couturier, Christine Sresting
6OxygenO%Couturier, Christine Scritical, % of air saturation
7Oxygen, standard errorO2 std e±Couturier, Christine Scritical, % of air saturation
8Respiration rate, oxygenResp O2mg/kg/hCouturier, Christine Smaximum
9Respiration rate, oxygen, standard errorResp O2 std e±Couturier, Christine Smaximum
10pHpHCouturier, Christine SPotentiometricmin, NBS scale
11pHpHCouturier, Christine SPotentiometricmax, NBS scale
12Temperature, waterTemp°CCouturier, Christine S
13Temperature, water, standard errorT std e±Couturier, Christine S
14SalinitySalCouturier, Christine S
15Alkalinity, totalATµmol/kgCouturier, Christine SPotentiometric titration
16Alkalinity, total, standard errorAT std e±Couturier, Christine SPotentiometric titration
17Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)pCO2water_SST_wetµatmCouturier, Christine SCalculated using CO2SYS
18Partial pressure of carbon dioxide (water) at sea surface temperature (wet air), standard errorpCO2water_SST_wet std e±Couturier, Christine SCalculated using CO2SYS
19Carbonate system computation flagCSC flagYang, YanCalculated using seacarb after Nisumaa et al. (2010)
20pHpHYang, YanCalculated using seacarb after Nisumaa et al. (2010)total scale
21Carbon dioxideCO2µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
22Fugacity of carbon dioxide (water) at sea surface temperature (wet air)fCO2water_SST_wetµatmYang, YanCalculated using seacarb after Nisumaa et al. (2010)
23Bicarbonate ion[HCO3]-µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
24Carbonate ion[CO3]2-µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
25Carbon, inorganic, dissolvedDICµmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
26Aragonite saturation stateOmega ArgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
27Calcite saturation stateOmega CalYang, YanCalculated using seacarb after Nisumaa et al. (2010)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
390 data points

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