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Edmunds, Peter J (2012): Growth, respiration and photophysiology of coral massive Porites spp. in the experiment of Moorea. PANGAEA, https://doi.org/10.1594/PANGAEA.820375, Supplement to: Edmunds, PJ (2012): Effect of pCO2 on the growth, respiration, and photophysiology of massive Porites spp. in Moorea, French Polynesia. Marine Biology, 159(10), 2149-2160, https://doi.org/10.1007/s00227-012-2001-y

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Abstract:
I tested the hypothesis that high pCO2 (76.6 Pa and 87.2 Pa vs. 42.9 Pa) has no effect on the metabolism of juvenile massive Porites spp. after 11 days at 28 °C and 545 µmol quanta/m**2/s. The response was assessed as aerobic dark respiration, skeletal weight (i.e., calcification), biomass, and chlorophyll fluorescence. Corals were collected from the shallow (3-4 m) back reef of Moorea, French Polynesia (17°28.614'S, 149°48.917'W), and experiments conducted during April and May 2011. An increase in pCO2 to 76.6 Pa had no effect on any dependent variable, but 87.2 Pa pCO2 reduced area-normalized (but not biomass-normalized) respiration 36 %, as well as maximum photochemical efficiency (Fv/Fm) of open RCIIs and effective photochemical efficiency of RCIIs in actinic light (Delta F/F'm ); neither biomass, calcification, nor the energy expenditure coincident with calcification (J/g) was effected. These results do not support the hypothesis that high pCO2 reduces coral calcification through increased metabolic costs and, instead, suggest that high pCO2 causes metabolic depression and photochemical impairment similar to that associated with bleaching. Evidence of a pCO2 threshold between 76.6 and 87.2 Pa for inhibitory effects on respiration and photochemistry deserves further attention as it might signal the presence of unpredictable effects of rising pCO2.
Further details:
Lavigne, Héloise; Gattuso, Jean-Pierre (2011): seacarb: seawater carbonate chemistry with R. R package version 2.4. https://cran.r-project.org/package=seacarb
Coverage:
Latitude: -17.476900 * Longitude: -149.815300
Date/Time Start: 2011-04-01T00:00:00 * Date/Time End: 2011-08-31T00:00:00
Minimum Elevation: -4.0 m * Maximum Elevation: -2.0 m
Event(s):
Moorea * Latitude: -17.476900 * Longitude: -149.815300 * Date/Time Start: 2011-04-01T00:00:00 * Date/Time End: 2011-08-31T00:00:00 * Elevation Start: -2.0 m * Elevation End: -4.0 m * Location: French Polynesia * 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 2013-10-11.
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethodComment
1SpeciesSpeciesEdmunds, Peter J
2Sample code/labelSample labelEdmunds, Peter J
3TreatmentTreatEdmunds, Peter JLT-AC = ambient pCO2, LT-MC = medium pCO2, LT-HC = high pCO2
4Surface areaSAcm2Edmunds, Peter J
5Respiration rate, oxygenResp O2µmol/cm2/hEdmunds, Peter JDark
6Calcification rate of calcium carbonateCalc rate CaCO3mg/cm2/dayEdmunds, Peter J
7Metabolic expenditureMet expJ/gEdmunds, Peter J
8Respiration rate, oxygenResp O2µmol/mg/hEdmunds, Peter JDark respiration normalized to biomass
9Calcification rate of calcium carbonateCalc rate CaCO3mg/mg/dayEdmunds, Peter JNormalized to biomass
10Biomassbiommg/cm2Edmunds, Peter J
11Effective photochemical quantum yieldphi PS IIEdmunds, Peter J
12Maximum photochemical quantum yield of photosystem IIFv/FmEdmunds, Peter J
13Excitation pressureQmEdmunds, Peter J
14FluorescenceFluorescencearbitrary unitsEdmunds, Peter JYield in actinic light
15Fluorescence, maximumFmEdmunds, Peter JMaximum fluorescence yield in actinic light
16FluorescenceFluorescencearbitrary unitsEdmunds, Peter JYield in darkness
17Fluorescence, maximumFmEdmunds, Peter J
18Temperature, waterTemp°CEdmunds, Peter J
19Temperature, water, standard errorT std e±Edmunds, Peter J
20IrradianceEµmol/m2/sEdmunds, Peter J
21Irradiance, standard errorE std e±Edmunds, Peter J
22SalinitySalEdmunds, Peter J
23pHpHEdmunds, Peter JSpectrophotometricTotal scale, measured at 25 centi degree
24pH, standard errorpH std e±Edmunds, Peter JSpectrophotometricTotal scale, measured at 25 centi degree
25Alkalinity, totalATµmol/kgEdmunds, Peter JPotentiometric titration
26Alkalinity, total, standard errorAT std e±Edmunds, Peter JPotentiometric titration
27Aragonite saturation stateOmega ArgEdmunds, Peter JCalculated using CO2SYS
28Aragonite saturation state, standard errorOmega Arg std e±Edmunds, Peter JCalculated using CO2SYS
29Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)pCO2water_SST_wetPaEdmunds, Peter J
30Partial pressure of carbon dioxide (water) at sea surface temperature (wet air), standard errorpCO2water_SST_wet std e±Edmunds, Peter JCalculated using CO2SYS
31Carbonate system computation flagCSC flagYang, YanCalculated using seacarb after Nisumaa et al. (2010)
32pHpHYang, YanCalculated using seacarb after Nisumaa et al. (2010)Total scale, in situ pH
33Carbon dioxideCO2µmol/kgYang, 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)
35Fugacity of carbon dioxide (water) at sea surface temperature (wet air)fCO2water_SST_wetµatmYang, YanCalculated using seacarb after Nisumaa et al. (2010)
36Bicarbonate ion[HCO3]-µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
37Carbonate ion[CO3]2-µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
38Carbon, inorganic, dissolvedDICµmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
39Aragonite saturation stateOmega ArgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
40Calcite saturation stateOmega CalYang, YanCalculated using seacarb after Nisumaa et al. (2010)
Size:
1160 data points

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