Citation:

j.scitotenv.2010.12.007

Name: Seawater carbonate chemistry and community calcification near Lizar Island, 2011
Published: 2011-07-21
License: https://creativecommons.org/licenses/by/3.0/
Keywords: Benthos; Bottles or small containers/Aquaria (<20 L); Calcification/Dissolution; Coast and continental shelf; Entire community; Laboratory experiment; Rocky-shore community; South Pacific; Tropical

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Abstract:

It is predicted that surface ocean pH will reach 7.9, possibly 7.8 by the end of this century due to increased carbon dioxide (CO2) in the atmosphere and in the surface ocean. While aragonite-rich sediments don't begin to dissolve until a threshold pH of ~ 7.8 is reached, dissolution from high-Mg calcites is evident with any drop in pH. Indeed, it is high-Mg calcite that dominates the reaction of carbonate sediments with increased CO2, which undergoes a rapid neomorphism process to a more stable, low-Mg calcite. This has major implications for the future of the high-Mg calcite producing organisms within coral reef ecosystems. In order to understand any potential buffering system offered by the dissolution of carbonate sediments under a lower oceanic pH, this process of high-Mg calcite dissolution in the reef environment must be further elucidated.

Keyword(s):

Benthos; Bottles or small containers/Aquaria (<20 L); Calcification/Dissolution; Coast and continental shelf; Entire community; Laboratory experiment; Rocky-shore community; South Pacific; Tropical

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	Identification	ID		Tynan, Sarah
2	Site	Site		Tynan, Sarah
3	Sample ID	Sample ID		Tynan, Sarah
4	Time of day	Time of day		Tynan, Sarah
5	Incubation duration	Inc dur	h	Tynan, Sarah
6	Salinity	Sal		Tynan, Sarah
7	Temperature, water	Temp	°C	Tynan, Sarah
8	pH	pH		Tynan, Sarah	Measured	NBS/NIST scale
9	Calcium	Ca2+	mg/kg	Tynan, Sarah	Varian Vista Pro Inductively Coupled Plasma Atomic Emission Spectrometer
10	Magnesium	Mg2+	mg/kg	Tynan, Sarah	Varian Vista Pro Inductively Coupled Plasma Atomic Emission Spectrometer
11	Alkalinity, total	AT	µmol/kg	Tynan, Sarah	Metrohm Titrando titrator
12	Δ alkalinity, total	Δ AT		Tynan, Sarah
13	Calcification rate of calcium carbonate	Calc rate CaCO3	µmol/cm²/h	Tynan, Sarah	Alkalinity anomaly technique (Smith and Key, 1975)
14	Carbon, inorganic, dissolved	DIC	µmol/kg	Tynan, Sarah	Calculated using CO2SYS
15	Carbonate system computation flag	CSC flag		Nisumaa, Anne-Marin	Calculated using seacarb after Nisumaa et al. (2010)
16	pH	pH		Nisumaa, Anne-Marin	Calculated using seacarb after Nisumaa et al. (2010)	Total scale
17	Carbon dioxide	CO2	µmol/kg	Nisumaa, Anne-Marin	Calculated using seacarb after Nisumaa et al. (2010)
18	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)
19	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)
20	Bicarbonate ion	[HCO3]-	µmol/kg	Nisumaa, Anne-Marin	Calculated using seacarb after Nisumaa et al. (2010)
21	Carbonate ion	[CO3]2-	µmol/kg	Nisumaa, Anne-Marin	Calculated using seacarb after Nisumaa et al. (2010)
22	Aragonite saturation state	Omega Arg		Nisumaa, Anne-Marin	Calculated using seacarb after Nisumaa et al. (2010)
23	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:

2353 data points

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