Seawater carbonate chemistry and community calcification during Reunion Island coral reef community study, 2007
Cobertura |
DATE/TIME START: 2003-09-20T12:29:00 * DATE/TIME END: 2004-08-10T17:27:00 |
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Data(s) |
23/06/2007
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Resumo |
To assess the contribution of soft-bottoms to the carbon cycle in coral reefs, the net community production (p) was measured in winter at 3 stations on La Saline inner reef flat (Reunion Island). Changes in pH and total alkalinity at different irradiances (I) were assessed using benthic chambers (0.2 m2) during a 1-h incubation. Mean grain size, the silt and clay load and chlorophyll a content of the sediments were analysed in each chamber. Daily community production (P), gross community production (Pg) and community respiration (R) were estimated from p-I curves and daily irradiance variations (PAR, 400-700 nm). Sediment characteristics and chlorophyll a contents did not differ between the three sites, except for the silt and clay fraction at one station. R being higher than Pg (84.88 ± 7.36 and -62.29 ± 3.34 mmolC m-2 d-1 respectively), P value reached 22.59 ± 5.66 mmolC m-2 d-1. The sediments were therefore heterotrophic with a mean Pg/R lower than 1 (0.74 ± 0.05) and appear to be a carbon source. Our data suggested the importance of the degradation process in the functioning of near-reef sediments. |
Formato |
text/tab-separated-values, 1292 data points |
Identificador |
https://doi.pangaea.de/10.1594/PANGAEA.721964 doi:10.1594/PANGAEA.721964 |
Idioma(s) |
en |
Publicador |
PANGAEA |
Direitos |
CC-BY: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted |
Fonte |
Supplement to: Taddei, Dorothée; Bucas, G; Clavier, Jacques; Cuet, Pascale; Frouin, P (2007): Carbon fluxes at the water-sediment interface in Reunion Island fringing reef. Western Indian Ocean Journal of Marine Science, 6(2), 137-146, hdl:10013/epic.35511.d001 |
Palavras-Chave | #Alkalinity, potentiometric; Alkalinity, total; Alkalinity anomaly technique (Smith and Key, 1975); Aragonite saturation state; Bicarbonate ion; 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; DATE/TIME; EPOCA; EUR-OCEANS; European network of excellence for Ocean Ecosystems Analysis; European Project on Ocean Acidification; EXP; Experiment; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); OA-ICC; Ocean Acidification International Coordination Centre; PAR sensor LI-1400, LI-COR Inc.; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); pH; pH, Electrode; Radiation, photosynthetically active; Salinity; Sample ID; Taddei_etal_07; Temperature, water; YSI 6920 salinity/conductivity/temperature meter |
Tipo |
Dataset |