Seawater carbonate chemistry and calcification during an experiment with a coral Porites lutea, 2004

Using living corals collected from Okinawan coral reefs, laboratory experiments were performed to investigate the relationship between coral calcification and aragonite saturation state (W) of seawater at 25 infinity C. Calcification rate of a massive coral Porites lutea cultured in a beaker showed...

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Bibliographic Details
Main Authors: Ohde, Shigeru, Hossain, Mirza M Mozaffar
Format: Dataset
Language:English
Published: PANGAEA 2004
Subjects:
Alkalinity
total
Alkalinity anomaly technique (Smith and Key
1975)
Animalia
Aragonite saturation state
Benthic animals
Benthos
Bicarbonate ion
Bottles or small containers/Aquaria (<20 L)
Calcification/Dissolution
Calcification rate of calcium carbonate
Calcite saturation state
Calculated using CO2SYS
Calculated using seacarb after Nisumaa et al. (2010)
Carbon
inorganic
dissolved
Carbonate ion
Carbonate system computation flag
Carbon dioxide
Cnidaria
Coast and continental shelf
Date/time end
Date/time start
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)
Laboratory experiment
Measured
North Pacific
OA-ICC
Ocean Acidification International Coordination Centre
OH_04
PAR-sensor LI-250
LI-COR Inc.
Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)
pH
pH meter (HM-60S
TOA Electronic
Japan)
Porites lutea
Radiation
photosynthetically active
Salinity
Salinometer (601 MK III
Ocean acidification
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.721879
https://doi.org/10.1594/PANGAEA.721879
Description
Summary:Using living corals collected from Okinawan coral reefs, laboratory experiments were performed to investigate the relationship between coral calcification and aragonite saturation state (W) of seawater at 25 infinity C. Calcification rate of a massive coral Porites lutea cultured in a beaker showed a linear increase with increasing Waragonite values (1.08-7.77) of seawater. The increasing trend of calcification rate (c) for W is expressed as an equation, c = aW + b (a, b: constants). When W was larger than ~4, the coral samples calcified during nighttime, indicating an evidence of dark calcification. This study strongly suggests that calcification of Porites lutea depends on W of ambient seawater. A decrease in saturation state of seawater due to increased pCO2 may decrease reef-building capacity of corals through reducing calcification rate of corals.

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