Citation:

gcb.14379

Name: Seawater carbonate chemistry and calcification physiology data in coral reef taxa
Published: 2018-07-26
License: https://creativecommons.org/licenses/by/3.0/
Keywords: Acropora yongei; Animalia; Benthic animals; Benthos; Calcification/Dissolution; Cnidaria; Coast and continental shelf; Containers and aquaria (20-1000 L or < 1 m**2); Indian Ocean; Indian Ocean; Laboratory experiment; Macroalgae; Plantae; Pocillopora damicornis; Rhodophyta; Single species; Sporolithon durum; Temperate

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Abstract:

Ocean acidification (OA) is a major threat to marine ecosystems, particularly coral reefs which are heavily reliant on calcareous species. OA decreases seawater pH and calcium carbonate saturation state (Omega), and increases the concentration of dissolved inorganic carbon (DIC). Intense scientific effort has attempted to determine the mechanisms via which ocean acidification (OA) influences calcification, led by early hypotheses that calcium carbonate saturation state (Omega) is the main driver. We grew corals and coralline algae for 8 to 21 weeks, under treatments where the seawater parameters Omega, pH and DIC were manipulated to examine their differential effects on calcification rates and calcifying fluid chemistry (Omega cf, pHcf, and DICcf). Here, using long duration experiments, we provide geochemical evidence that differing physiological controls on carbonate chemistry at the site of calcification, rather than seawater Omega, are the main determinants of calcification. We found that changes in seawater pH and DIC rather than Omega had the greatest effects on calcification and calcifying fluid chemistry, though the effects of seawater carbonate chemistry were limited. Our results demonstrate the capacity of organisms from taxa with vastly different calcification mechanisms to regulate their internal chemistry under extreme chemical conditions. These findings provide an explanation for the resilience of some species to OA, while also demonstrating how changes in seawater DIC and pH under OA influence calcification of key coral reef taxa.

Keyword(s):

Acropora yongei; Animalia; Benthic animals; Benthos; Calcification/Dissolution; Cnidaria; Coast and continental shelf; Containers and aquaria (20-1000 L or < 1 m**2); Indian Ocean; Indian Ocean; Laboratory experiment; Macroalgae; Plantae; Pocillopora damicornis; Rhodophyta; Single species; Sporolithon durum; Temperate

Further details:

Gattuso, Jean-Pierre; Epitalon, Jean-Marie; Lavigne, Héloïse; Orr, James C; Gentili, Bernard; Proye, Aurélien; Soetaert, Karline; Rae, James (2016): seacarb: seawater carbonate chemistry with R. R package version 3.1. https://cran.r-project.org/package=seacarb

Project(s):

Ocean Acidification International Coordination Centre (OA-ICC)

Comment:

In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2016) 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). The date of carbonate chemistry calculation by seacarb is 2018-07-26.

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Type	Type		Comeau, Steeve		study
2	Species	Species		Comeau, Steeve
3	Registration number of species	Reg spec no		Comeau, Steeve
4	Uniform resource locator/link to reference	URL ref		Comeau, Steeve		WoRMS Aphia ID
5	Treatment	Treat		Comeau, Steeve
6	Calcification rate of calcium carbonate	Calc rate CaCO3	mg/cm²/day	Comeau, Steeve
7	Calcifying fluid, dissolved inorganic carbon	CF DIC	µmol/kg	Comeau, Steeve
8	Calcifying fluid, pH	CF pH		Comeau, Steeve
9	Ratio	Ratio		Comeau, Steeve		calcium in the calcifying fluid/ calcium in seawater
10	Calcifying fluid, aragonite saturation state	CF Omega Arg		Comeau, Steeve
11	Boron/Calcium ratio	B/Ca		Comeau, Steeve
12	Full width at half maximum	FWHM		Comeau, Steeve		from Perrin 2016
13	Salinity	Sal		Comeau, Steeve
14	pH	pH		Comeau, Steeve	Potentiometric	total scale
15	pH, standard error	pH std e	±	Comeau, Steeve	Potentiometric	total scale
16	Carbon, inorganic, dissolved	DIC	µmol/kg	Comeau, Steeve	Calculated using seacarb
17	Carbon, inorganic, dissolved, standard error	DIC std e	±	Comeau, Steeve	Calculated using seacarb
18	Alkalinity, total	AT	µmol/kg	Comeau, Steeve	Potentiometric titration
19	Alkalinity, total, standard error	AT std e	±	Comeau, Steeve	Potentiometric titration
20	Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)	pCO2water_SST_wet	µatm	Comeau, Steeve	Calculated using seacarb
21	Partial pressure of carbon dioxide (water) at sea surface temperature (wet air), standard error	pCO2water_SST_wet std e	±	Comeau, Steeve	Calculated using seacarb
22	Temperature, water	Temp	°C	Comeau, Steeve
23	Temperature, water, standard error	T std e	±	Comeau, Steeve
24	Aragonite saturation state	Omega Arg		Comeau, Steeve	Calculated using seacarb
25	Aragonite saturation state, standard error	Omega Arg std e	±	Comeau, Steeve	Calculated using seacarb
26	Calcite saturation state	Omega Cal		Comeau, Steeve	Calculated using seacarb
27	Calcite saturation state, standard error	Omega Cal std e	±	Comeau, Steeve	Calculated using seacarb
28	Carbonate system computation flag	CSC flag		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
29	Carbon dioxide	CO2	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
30	Fugacity of carbon dioxide (water) at sea surface temperature (wet air)	fCO2water_SST_wet	µatm	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
31	Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)	pCO2water_SST_wet	µatm	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
32	Bicarbonate ion	[HCO3]-	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
33	Carbonate ion	[CO3]2-	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
34	Carbon, inorganic, dissolved	DIC	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
35	Aragonite saturation state	Omega Arg		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
36	Calcite saturation state	Omega Cal		Yang, Yan	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:

3512 data points

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