Seawater carbonate chemistry and calcification during a tropical lagoon study at SW lagoon, New Caledonia, 1991

• Main Authors: Garrigue, Claire, Boucher, Guy, Clavier, Jacques
• Format: Dataset
• Language: English
• Published: PANGAEA 1994
• Subjects: Alkalinity; total; Alkalinity anomaly technique (Smith and Key; 1975); Aragonite saturation state; Benthos; Bicarbonate ion; 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; Containers and aquaria (20-1000 L or < 1 m**2); Date; DEPTH; water; Entire community; EPOCA; EUR-OCEANS; European network of excellence for Ocean Ecosystems Analysis; European Project on Ocean Acidification; EXP; Experiment; Field experiment; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); GB_92/94; OA-ICC; Ocean Acidification International Coordination Centre; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); pH; pH logger (AIMS; 1991); Salinity; Site; Soft-bottom community; South Pacific; SW lagoon New Caledonia; Temperature; Titration potentiometric (Tacussel Titrator; TT-processor 2600S); Tropical; Ocean acidification
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.717620; https://doi.org/10.1594/PANGAEA.717620

A selective chemical photosynthesis inhibitor, DCMU (Dichorophenyl-dimethylurea), dissolved in DMSO (Dimethyl sulfoxide) was substituted for the dark incubation method commonly used to measure the oxygen consumption in metabolic and primary production studies. We compared oxygen fluxes during light incubations with DCMU and dark incubations procedure, on soft bottom benthos. For this purpose, we studied the effects of different DCMU concentrations. A concentration of 5 · 10-5 mol l-1 inside a clear incubation enclosure completely inhibits photosynthesis without affecting the metabolism of soft bottom benthos.