Seawater carbonate chemistry during a study at Shiraho coral reef (Ishigaki Island, Japan),1998 ...

• Main Authors: Hata, Hiroshi, Kudo, Setsuko, Yamano, Hiroya, Kurano, Norihide, Kayanne, Hajime
• Format: Dataset
• Language: English
• Published: PANGAEA 2002
• Subjects: Benthos; Coast and continental shelf; Entire community; Field observation; North Pacific; Rocky-shore community; Temperate; Salinity; Temperature, water; Radiation, photosynthetically active; Carbonate system computation flag; pH; Alkalinity, total; Carbon, inorganic, dissolved; Carbon dioxide; Carbonate ion; Bicarbonate ion; Fugacity of carbon dioxide water at sea surface temperature wet air; Partial pressure of carbon dioxide water at sea surface temperature wet air; Aragonite saturation state; Calcite saturation state; Experiment; Salinometer, inductive; CTD, Sea-Bird SBE 911plus; LICOR quantameter LI-COR LI-192SA; Calculated using seacarb after Nisumaa et al. 2010; Precision analyzer Model EN-501A, Kimoto Electric; European network of excellence for Ocean Ecosystems Analysis EUR-OCEANS; European Project on Ocean Acidification EPOCA; Ocean Acidification International Coordination Centre OA-ICC; Pacific; Ocean acidification
• Online Access: https://dx.doi.org/10.1594/pangaea.717727; https://doi.pangaea.de/10.1594/PANGAEA.717727

Organic carbon flux and community production rates were estimated on Shiraho coral reef (Ishigaki Island, Japan) from 19 to 26 September 1998. The daily net community production (Pn) and respiration rate (R) during the study period were 3 to 79 and 596 mmolC m-2 d-1, respectively. This resulted in a daily gross community production (Pg) of 599 to 675 mmolC m-2 d-1. The variation of Pn associated with the uncertainty of the curve fitting parameters of light response curves for photosynthesis was estimated using an error propagation formula. The averaged Pn ± SE was 36 ± 12 mmolC m-2 d-1 (n = 23), indicating that the Pn was significantly positive (t-test, p < 0.05). The apparent fluxes of dissolved organic carbon (DOC) and particulate organic carbon (POC) on the reef were estimated as 30 to 36 and 5 to 7 mmolC m-2 d-1, respectively; The sum of which was comparable with the Pn during the study period. The sediment trap study conducted at 1 km off the reef and 40 m depth showed that the vertical flux of POC ... : 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). ...