Citation:

2011GL047786

Name: Seawater carbonate chemistry, Acropora digitifera growth and skeletal U/Ca ratios during experiments, 2011
Published: 2011
License: https://creativecommons.org/licenses/by/3.0/
Keywords: Acropora digitifera; Animalia; Benthic animals; Benthos; Biomass/Abundance/Elemental composition; Bottles or small containers/Aquaria (<20 L); Calcification/Dissolution; Cnidaria; Coast and continental shelf; Growth/Morphology; Laboratory experiment; North Pacific; Single species; Temperate

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Abstract:

The impact of ocean acidification caused by the increasing atmospheric CO2 has been studied in marine calcifiers, including hermatypic corals. However, the effect of elevated pCO2 on the early developmental life-cycle stage of corals has been little studied. In this study, we reared polyps of Acropora digitifera in seawater at pHT 6.55, 7.31, 7.64, 7.77, and 8.03, controlled by CO2 bubbling. We measured the dry weights of polyp skeletons after the 40-d experiment to investigate the relationship between the seawater aragonite saturation state and polyp growth. In addition, we measured skeletal U/Ca ratio to estimate their pH dependence. Skeletal weights of coral polyps increased with the aragonite saturation state and reached an apparent saturation plateau above pH 7.77. U/Ca ratios had a strong inverse relationship with pH and a negligible relationship with skeletal growth rate (polyp weight), suggesting that skeletal U/Ca could be useful for reconstructing paleo-pH.

Keyword(s):

Acropora digitifera; Animalia; Benthic animals; Benthos; Biomass/Abundance/Elemental composition; Bottles or small containers/Aquaria (<20 L); Calcification/Dissolution; Cnidaria; Coast and continental shelf; Growth/Morphology; Laboratory experiment; North Pacific; Single species; Temperate

Project(s):

European network of excellence for Ocean Ecosystems Analysis (EUR-OCEANS)

European Project on Ocean Acidification (EPOCA)

Ocean Acidification International Coordination Centre (OA-ICC)

Funding:

Seventh Framework Programme (FP7), grant/award no. 211384 : European Project on Ocean Acidification

Sixth Framework Programme (FP6), grant/award no. 511106 : European network of excellence for Ocean Ecosystems Analysis

Comment:

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).

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Experimental treatment	Exp treat		Inoue, Mayuri
2	Salinity	Sal		Inoue, Mayuri
3	Salinity, standard deviation	Sal std dev	±	Inoue, Mayuri
4	Temperature, water	Temp	°C	Inoue, Mayuri
5	Temperature, standard deviation	T std dev	±	Inoue, Mayuri
6	pH	pH		Inoue, Mayuri	pH meter (Metrohm electrodes)	Total scale
7	pH, standard deviation	pH std dev	±	Inoue, Mayuri
8	Alkalinity, total	AT	µmol/kg	Inoue, Mayuri	Measured
9	Carbonate ion	[CO3]2-	µmol/kg	Inoue, Mayuri	Calculated using CO2SYS	Min
10	Carbonate ion	[CO3]2-	µmol/kg	Inoue, Mayuri	Calculated using CO2SYS	Max
11	Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)	pCO2water_SST_wet	µatm	Inoue, Mayuri	Calculated using CO2SYS	Min
12	Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)	pCO2water_SST_wet	µatm	Inoue, Mayuri	Calculated using CO2SYS	Max
13	Aragonite saturation state	Omega Arg		Inoue, Mayuri	Calculated using CO2SYS	Min
14	Aragonite saturation state	Omega Arg		Inoue, Mayuri	Calculated using CO2SYS	Max
15	Aragonite saturation state	Omega Arg		Inoue, Mayuri	Calculated using CO2SYS	Average
16	Calcification rate	Calc rate	%/day	Inoue, Mayuri
17	Acropora digitifera, weight	A. digitifera w	µg	Inoue, Mayuri
18	Acropora digitifera, weight	A. digitifera w	µg	Inoue, Mayuri		Mean
19	Acropora digitifera, weight, standard deviation	A. digitifera w std dev	±	Inoue, Mayuri
20	Replicates	Repl	#	Inoue, Mayuri
21	Uranium/Calcium ratio	U/Ca	µmol/mol	Inoue, Mayuri
22	Carbonate system computation flag	CSC flag		Nisumaa, Anne-Marin	Calculated using seacarb after Nisumaa et al. (2010)
23	Carbon dioxide	CO2	µmol/kg	Nisumaa, Anne-Marin	Calculated using seacarb after Nisumaa et al. (2010)
24	Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)	pCO2water_SST_wet	µatm	Nisumaa, Anne-Marin	Calculated using seacarb after Nisumaa et al. (2010)
25	Fugacity of carbon dioxide (water) at sea surface temperature (wet air)	fCO2water_SST_wet	µatm	Nisumaa, Anne-Marin	Calculated using seacarb after Nisumaa et al. (2010)
26	Bicarbonate ion	[HCO3]-	µmol/kg	Nisumaa, Anne-Marin	Calculated using seacarb after Nisumaa et al. (2010)
27	Carbonate ion	[CO3]2-	µmol/kg	Nisumaa, Anne-Marin	Calculated using seacarb after Nisumaa et al. (2010)
28	Carbon, inorganic, dissolved	DIC	µmol/kg	Nisumaa, Anne-Marin	Calculated using seacarb after Nisumaa et al. (2010)
29	Aragonite saturation state	Omega Arg		Nisumaa, Anne-Marin	Calculated using seacarb after Nisumaa et al. (2010)
30	Calcite saturation state	Omega Cal		Nisumaa, Anne-Marin	Calculated using seacarb after Nisumaa et al. (2010)

License:

Creative Commons Attribution 3.0 Unported (CC-BY-3.0)

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

710 data points

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