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Gattuso, Jean-Pierre; Pichon, Michel; Delesalle, Bruno; Canon, C; Frankignoulle, Michel (1996): Seawater carbonate chemistry and calcification during tropical reef studies at Moorea (French Polynesia), 1996 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.717486, Supplement to: Gattuso, J-P et al. (1996): Carbon fluxes in coral reefs. I. Lagrangian measurement of community metabolism and resulting air-sea CO2 disequilibrium. Marine Ecology Progress Series, 145, 109-121, https://doi.org/10.3354/meps145109

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Abstract:
Community metabolism was investigated using a Lagrangian flow respirometry technique on 2 reef flats at Moorea (French Polynesia) during austral winter and Yonge Reef (Great Barrier Reef) during austral summer. The data were used to estimate related air-sea CO2 disequilibrium. A sine function did not satisfactorily model the diel light curves and overestimated the metabolic parameters. The ranges of community gross primary production and respiration (Pg and R; 9 to 15 g C m-2 d-1) were within the range previously reported for reef flats, and community net calcification (G; 19 to 25 g CaCO3 m-2 d-1) was higher than the 'standard' range. The molar ratio of organic to inorganic carbon uptake was 6:1 for both sites. The reef flat at Moorea displayed a higher rate of organic production and a lower rate of calcification compared to previous measurements carried out during austral summer. The approximate uncertainty of the daily metabolic parameters was estimated using a procedure based on a Monte Carlo simulation. The standard errors of Pg,R and Pg/R expressed as a percentage of the mean are lower than 3% but are comparatively larger for E, the excess production (6 to 78%). The daily air-sea CO2 flux (FCO2) was positive throughout the field experiments, indicating that the reef flats at Moorea and Yonge Reef released CO2 to the atmosphere at the time of measurement. FCO2 decreased as a function of increasing daily irradiance.
Keyword(s):
Benthos; Calcification/Dissolution; Coast and continental shelf; Entire community; Field observation; Soft-bottom community; South Pacific; Tropical
Project(s):
European network of excellence for Ocean Ecosystems Analysis (EUR-OCEANS)
European Project on Ocean Acidification (EPOCA)
Ocean Acidification International Coordination Centre (OA-ICC)
Funding:
Seventh Framework Programme (FP7), grant/award no. 211384: European Project on Ocean Acidification
Sixth Framework Programme (FP6), grant/award no. 511106: European network of excellence for Ocean Ecosystems Analysis
Coverage:
Date/Time Start: 1992-07-25T11:35:00 * Date/Time End: 1992-08-12T14:22:00
Event(s):
Gattuso_etal_96M * Location: Moorea (French Polynesia) * Method/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).
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1 DATE/TIMEDate/TimeGeocode
2 SalinitySalGattuso, Jean-Pierre
3 Temperature, waterTemp°CGattuso, Jean-PierreThermistor
4 Radiation, photosynthetically activePARµmol/m2/sGattuso, Jean-PierreLICOR quantameter (LI-COR LI-192SA)
5 Carbonate system computation flagCSC flagNisumaa, Anne-MarinCalculated using seacarb after Nisumaa et al. (2010)
6 pHpHGattuso, Jean-PierreNBS scale
7 pHpHNisumaa, Anne-MarinCalculated using seacarb after Nisumaa et al. (2010)Total scale
8 Alkalinity, totalATmmol(eq)/lGattuso, Jean-PierreTitration potentiometric (Metler-Toledo)
9 Alkalinity, totalATµmol/kgGattuso, Jean-PierreCalculatedOriginal data in µEq/l, density, gotten from salinity and temperature, was used for conversion
10 Carbon dioxideCO2µmol/kgNisumaa, Anne-MarinCalculated using seacarb after Nisumaa et al. (2010)
11 Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)pCO2water_SST_wetµatmNisumaa, Anne-MarinCalculated using seacarb after Nisumaa et al. (2010)
12 Fugacity of carbon dioxide (water) at sea surface temperature (wet air)fCO2water_SST_wetµatmNisumaa, Anne-MarinCalculated using seacarb after Nisumaa et al. (2010)
13 Bicarbonate ion[HCO3]-µmol/kgNisumaa, Anne-MarinCalculated using seacarb after Nisumaa et al. (2010)
14 Carbonate ion[CO3]2-µmol/kgNisumaa, Anne-MarinCalculated using seacarb after Nisumaa et al. (2010)
15 Carbon, inorganic, dissolvedDICµmol/kgNisumaa, Anne-MarinCalculated using seacarb after Nisumaa et al. (2010)
16 Aragonite saturation stateOmega ArgNisumaa, Anne-MarinCalculated using seacarb after Nisumaa et al. (2010)
17 Calcite saturation stateOmega CalNisumaa, Anne-MarinCalculated using seacarb after Nisumaa et al. (2010)
18 Calcification rate of calcium carbonateCalc rate CaCO3mmol/m2/hGattuso, Jean-PierreAlkalinity anomaly technique (Smith and Key, 1975)
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
204 data points

Data

Download dataset as tab-delimited text — use the following character encoding:

1 
Date/Time		2 
Sal		3 
Temp [°C]
(Thermistor)		4 
PAR [µmol/m2/s]
(LICOR quantameter (LI-COR LI-...)		5 
CSC flag
(Calculated using seacarb afte...)		6 
pH
(NBS scale)		7 
pH
(Total scale, Calculated using...)		8 
AT [mmol(eq)/l]
(Titration potentiometric (Met...)		9 
AT [µmol/kg]
(Original data in µEq/l, densi...)		10 
CO2 [µmol/kg]
(Calculated using seacarb afte...)		11 
pCO2water_SST_wet [µatm]
(Calculated using seacarb afte...)		12 
fCO2water_SST_wet [µatm]
(Calculated using seacarb afte...)		13 
[HCO3]- [µmol/kg]
(Calculated using seacarb afte...)		14 
[CO3]2- [µmol/kg]
(Calculated using seacarb afte...)		15 
DIC [µmol/kg]
(Calculated using seacarb afte...)		16 
Omega Arg
(Calculated using seacarb afte...)		17 
Omega Cal
(Calculated using seacarb afte...)		18 
Calc rate CaCO3 [mmol/m2/h]
(Alkalinity anomaly technique ...)
1992-07-25T11:353627.021117.2268.307.972.3622307.913.06487.740486.2401812.66201.182026.93.204.8217.25
1992-07-25T13:453627.211106.9268.327.992.3632308.512.31461.710460.3001792.67209.522014.53.335.0212.17
1992-07-26T22:453626.880.0268.267.932.3702315.414.69546.430544.7501855.46187.052057.22.974.482.64
1992-07-27T00:203626.910.0268.277.942.3682314.014.27531.330529.7001845.41190.522050.23.034.563.16
1992-08-01T16:173627.07273.3268.297.962.3562301.813.38500.270498.7401815.95197.272026.63.144.7210.59
1992-08-01T17:343627.0230.3268.267.932.3602305.514.59544.700543.0201845.82186.792047.22.974.476.19
1992-08-03T14:463627.39549.0268.307.972.3542300.612.93487.140485.6501802.40202.262017.63.224.8414.65
1992-08-03T16:523627.3448.9268.277.942.3512297.214.05528.650527.0301826.70191.042031.83.044.589.77
1992-08-11T11:553626.69691.4268.297.962.3622307.913.52500.670499.1201825.37196.012034.93.114.6914.13
1992-08-11T13:553626.80900.1268.297.962.3582304.213.47500.120498.5801821.04196.202030.73.124.6911.60
1992-08-12T12:543627.161188.0268.297.962.3672313.313.44503.280501.7401824.48198.682036.63.164.7614.82
1992-08-12T14:223627.141030.5268.297.962.3652310.413.42502.580501.0401822.35198.332034.13.164.7512.66