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Gattuso, Jean-Pierre; Payri, Claude E; Pichon, Michel; Delesalle, Bruno; Frankignoulle, Michel (1997): Seawater carbonate chemistry and calcification during tropical reef studies at Moorea (French Polynesia), 1997 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.717469, Supplement to: Gattuso, J-P et al. (1997): Primary production, calcification, and air-sea CO2 fluxes of a macroalgal-dominated coral reef community (Moorea, French Polynesia). Journal of Phycology, 33(5), 729-738, https://doi.org/10.1111/j.0022-3646.1997.00729.x

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Abstract:
Community metabolism and air-sea carbon dioxide (CO2) fluxes were investigated in July 1992 on a fringing reef at Moorea (French Polynesia). The benthic community was dominated by macroalgae (85% substratum cover) and comprised of Phaeophyceae Padina tenuis (Bory), Turbinaria ornata (Turner) J. Agardh, and Hydroclathrus clathratus Bory (Howe); Chlorophyta Halimeda incrassata f. ovata J. Agardh (Howe); and Ventricaria ventricosa J. Agardh (Olsen et West), as well as several Rhodophyta (Actinotrichia fragilis Forskál (Børgesen) and several species of encrusting coralline algae). Algal biomass was 171 g dry weight/m**2. Community gross production (Pg), respiration (R), and net calcification (G) were measured in an open-top enclosure. Pg and R were respectively 248 and 240 mmol Co2/m**2/d, and there was a slight net dissolution of CaCO3 (0.8 mmol/m**2/d). This site was a sink for atmospheric CO2 (10 ± 4 mmol CO2/m**2/d), and the analysis of data from the literature suggests that this is a general feature of algal-dominated reefs. Measurement of air-sea CO2 fluxes in open water close to the enclosure demonstrated that changes in small-scale hydrodynamics can lead to misleading conclusions. Net CO2 evasion to the atmosphere was measured on the fringing reef due to changes in the current pattern that drove water from the barrier reef (a C02 source) to the study site.
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: 1992-07-16T00:13:00 * Date/Time End: 1992-07-16T22:54:00
Minimum DEPTH, water: 0 m * Maximum DEPTH, water: 1 m
Event(s):
Gattuso_etal_97 * 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 DEPTH, waterDepth watermGeocode
3 SalinitySalGattuso, Jean-Pierre
4 Temperature, waterTemp°CGattuso, Jean-Pierre
5 Radiation, photosynthetically activePARµmol/m2/sGattuso, Jean-PierreLICOR quantameter (LI-COR LI-192SA)
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
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:
320 data points

Data

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

1 
Date/Time		2 
Depth water [m]		3 
Sal		4 
Temp [°C]		5 
PAR [µmol/m2/s]
(LICOR quantameter (LI-COR LI-...)		6 
pH
(NBS scale)		7 
pH
(Total scale, Calculated using...)		8 
AT [mmol(eq)/l]
(Titration potentiometric)		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 ...)
1992-07-16T17:3213627.9417.798.307.972.3782323.812.93493.57492.071814.86207.112034.93.314.970.88
1992-07-16T18:3213627.840.008.277.942.3842329.914.13538.05536.411848.17196.202058.53.134.70-4.16
1992-07-16T19:3303627.730.008.247.912.3912337.115.43586.11584.321881.38185.792082.62.964.450.17
1992-07-16T20:5313627.560.008.227.892.3992344.016.40620.22618.321905.56178.842100.82.854.29-0.84
1992-07-16T21:5413627.460.008.207.872.4022347.017.37655.54653.541925.49172.042114.92.744.12-0.93
1992-07-16T22:5413627.360.008.187.852.4052349.918.40692.54690.421944.68165.422128.52.633.96-0.78
1992-07-16T00:1313627.200.008.157.822.4082352.820.02750.80748.501971.42155.762147.22.483.730.10
1992-07-16T01:1413627.080.008.127.792.4092353.721.75813.10810.601995.01146.552163.32.333.51-0.85
1992-07-16T02:1413626.960.008.107.772.4132358.023.02858.09855.452013.62140.762177.42.243.37-2.31
1992-07-16T03:3413626.810.008.107.772.4222366.023.15860.01857.362021.93140.712185.82.243.37-2.97
1992-07-16T04:3313626.710.008.087.762.4302373.623.89885.28882.552036.25138.062198.22.193.30-1.79
1992-07-16T05:3313626.600.008.077.752.4352378.624.64910.38907.572048.25135.212208.12.153.23-0.97
1992-07-16T06:5403626.5552.708.087.762.4372380.824.03887.08884.342043.97137.892205.92.193.30-0.07
1992-07-16T07:5403626.69183.238.107.782.4372380.922.74842.19839.592029.17143.992195.92.293.440.07
1992-07-16T08:5403626.82468.558.157.832.4312375.219.82736.30734.031986.99158.792165.62.523.802.38
1992-07-16T10:1113627.061049.428.217.892.4342378.716.80627.90625.971940.17179.332136.32.854.29-0.49
1992-07-16T11:1113627.251138.738.247.912.4322376.615.84594.68592.851919.62186.842122.32.974.472.04
1992-07-16T12:1213627.491207.698.267.942.4292373.714.49547.30545.621888.20198.412101.13.164.750.11
1992-07-16T13:3013627.791123.258.297.972.4182362.813.20501.88500.361848.44209.962071.63.355.036.28
1992-07-16T14:3013627.98877.398.327.992.4052351.012.36472.33470.891817.68217.462047.53.475.213.11