Seawater carbonate chemistry and calcification during a study of barrier reef flat in Moorea, French Polynesia, 1998
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| Natura: | Dataset Open Access |
| Lingua: | en |
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PANGAEA
1998
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| _version_ | 1867168075257741312 |
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| author | Boucher, Guy Clavier, Jacques Hily, Christian Gattuso, Jean-Pierre |
| author_facet | Boucher, Guy Clavier, Jacques Hily, Christian Gattuso, Jean-Pierre |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | The relative contribution of soft bottoms to the community metabolism (primary production, respiration and net calcification) of a barrier reef flat has been investigated at Moorea (French Polynesia). Community metabolism of the sedimentary area was estimated using in situ incubations in perspex chambers, and compared with estimates of community metabolism of the whole reef flat obtained using a Lagrangian technique (Gattuso et al., 1996. Carbon flux in coral reefs. 1. Lagrangian measurement of community metabolism and resulting air-sea CO2 disequilibrium. Mar. Ecol. Prog. Ser. 145, 109-121). Net organic carbon production (E), respiration (R) and net calcification (G) of sediments were measured by seven incubations performed in triplicate at different irradiance. Respiration and environmental parameters were also measured at four randomly selected additional stations. A model of Photosynthesis-irradiance allowed to calculate oxygen (O2), organic carbon (CO2) and calcium carbonate (CaCO3) evolution from surface irradiance during a diel cycle. As chlorophyll a content of the sediment was not significantly different between stations, primary production of the sediment was considered as homogeneous for the whole lagoon. Thus, carbon production at the test station can be modelled from surface light irradiance. The modelled respiration was two times higher at the test station than the mean respiration of the barrier reef, and thus underestimated sediment contribution to excess production. Sediments cover 40-60% of the surface and accounted for 2.8-4.1% of organic carbon excess production estimated with the modelled R and 21-32% when mean R value was considered. The sedimentary CaCO3 budget was a very minor component of the whole reef budget. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_716843 |
| institution | PANGAEA |
| language | en |
| publishDate | 1998 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Seawater carbonate chemistry and calcification during a study of barrier reef flat in Moorea, French Polynesia, 1998 Boucher, Guy Clavier, Jacques Hily, Christian Gattuso, Jean-Pierre Alkalinity, total; Alkalinity anomaly technique (Smith and Key, 1975); Aragonite saturation state; Benthos; Bicarbonate ion; Boucher_etal_98; Calcification/Dissolution; Calcification rate of calcium carbonate; Calcite saturation state; Calculated; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Coast and continental shelf; Date; DEPTH, water; Entire community; EPOCA; EUR-OCEANS; European network of excellence for Ocean Ecosystems Analysis; European Project on Ocean Acidification; EXP; Experiment; Experimental treatment; Field observation; Fugacity of carbon dioxide in seawater; LICOR quantameter (LI-COR LI-192SA); Moorea island, French Polynesia; OA-ICC; Ocean acidification; Ocean Acidification International Coordination Centre; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); pH, Electrode; pH, NBS scale; pH, total scale; Radiation, photosynthetically active; Salinity; Site; Soft-bottom community; South Pacific; Temperature, water; Titration potentiometric; Tropical The relative contribution of soft bottoms to the community metabolism (primary production, respiration and net calcification) of a barrier reef flat has been investigated at Moorea (French Polynesia). Community metabolism of the sedimentary area was estimated using in situ incubations in perspex chambers, and compared with estimates of community metabolism of the whole reef flat obtained using a Lagrangian technique (Gattuso et al., 1996. Carbon flux in coral reefs. 1. Lagrangian measurement of community metabolism and resulting air-sea CO2 disequilibrium. Mar. Ecol. Prog. Ser. 145, 109-121). Net organic carbon production (E), respiration (R) and net calcification (G) of sediments were measured by seven incubations performed in triplicate at different irradiance. Respiration and environmental parameters were also measured at four randomly selected additional stations. A model of Photosynthesis-irradiance allowed to calculate oxygen (O2), organic carbon (CO2) and calcium carbonate (CaCO3) evolution from surface irradiance during a diel cycle. As chlorophyll a content of the sediment was not significantly different between stations, primary production of the sediment was considered as homogeneous for the whole lagoon. Thus, carbon production at the test station can be modelled from surface light irradiance. The modelled respiration was two times higher at the test station than the mean respiration of the barrier reef, and thus underestimated sediment contribution to excess production. Sediments cover 40-60% of the surface and accounted for 2.8-4.1% of organic carbon excess production estimated with the modelled R and 21-32% when mean R value was considered. The sedimentary CaCO3 budget was a very minor component of the whole reef budget. |
| title | Seawater carbonate chemistry and calcification during a study of barrier reef flat in Moorea, French Polynesia, 1998 |
| topic | Alkalinity, total; Alkalinity anomaly technique (Smith and Key, 1975); Aragonite saturation state; Benthos; Bicarbonate ion; Boucher_etal_98; Calcification/Dissolution; Calcification rate of calcium carbonate; Calcite saturation state; Calculated; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Coast and continental shelf; Date; DEPTH, water; Entire community; EPOCA; EUR-OCEANS; European network of excellence for Ocean Ecosystems Analysis; European Project on Ocean Acidification; EXP; Experiment; Experimental treatment; Field observation; Fugacity of carbon dioxide in seawater; LICOR quantameter (LI-COR LI-192SA); Moorea island, French Polynesia; OA-ICC; Ocean acidification; Ocean Acidification International Coordination Centre; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); pH, Electrode; pH, NBS scale; pH, total scale; Radiation, photosynthetically active; Salinity; Site; Soft-bottom community; South Pacific; Temperature, water; Titration potentiometric; Tropical |
| url | https://doi.org/10.1594/PANGAEA.716843 |