Citation:

w6010059

Name: Seawater carbonate chemistry and calcification of two mediterranean cold-water coral species in a laboratory experiment
Published: 2014-06-05
License: https://creativecommons.org/licenses/by/3.0/
Keywords: Animalia; Benthic animals; Benthos; Calcification/Dissolution; Cnidaria; Containers and aquaria (20-1000 L or < 1 m**2); Deep-sea; Growth/Morphology; Laboratory experiment; Lophelia pertusa; Madrepora oculata; Mediterranean Sea; Single species; Temperate

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Abstract:

Deep-water ecosystems are characterized by relatively low carbonate concentration values and, due to ocean acidification (OA), these habitats might be among the first to be exposed to undersaturated conditions in the forthcoming years. However, until now, very few studies have been conducted to test how cold-water coral (CWC) species react to such changes in the seawater chemistry. The present work aims to investigate the mid-term effect of decreased pH on calcification of the two branching CWC species most widely distributed in the Mediterranean, Lophelia pertusa and Madrepora oculata. No significant effects were observed in the skeletal growth rate, microdensity and porosity of both species after 6 months of exposure. However, while the calcification rate of M. oculata was similar for all colony fragments, a heterogeneous skeletal growth pattern was observed in L. pertusa, the younger nubbins showing higher growth rates than the older ones. A higher energy demand is expected in these young, fast-growing fragments and, therefore, a reduction in calcification might be noticed earlier during long-term exposure to acidified conditions.

Keyword(s):

Animalia; Benthic animals; Benthos; Calcification/Dissolution; Cnidaria; Containers and aquaria (20-1000 L or < 1 m**2); Deep-sea; Growth/Morphology; Laboratory experiment; Lophelia pertusa; Madrepora oculata; Mediterranean Sea; Single species; Temperate

Further details:

Lavigne, Héloïse; Epitalon, Jean-Marie; Gattuso, Jean-Pierre (2014): seacarb: seawater carbonate chemistry with R. R package version 3.0. 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 (Lavigne et al, 2014) 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 is 2014-06-05.

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Incubation duration	Inc dur	days	Movilla, Juancho
2	Treatment	Treat		Movilla, Juancho
3	Identification	ID		Movilla, Juancho
4	Calcification rate of calcium carbonate	Calc rate CaCO3	mg/g/day	Movilla, Juancho
5	Species	Species		Movilla, Juancho
6	Mass	Mass	g	Movilla, Juancho		initial
7	pH	pH		Movilla, Juancho	Spectrophotometric	total scale
8	pH, standard deviation	pH std dev	±	Movilla, Juancho	Spectrophotometric	total scale
9	Alkalinity, total	AT	µmol/kg	Movilla, Juancho	Potentiometric titration
10	Alkalinity, total, standard deviation	AT std dev	±	Movilla, Juancho	Potentiometric titration
11	Salinity	Sal		Movilla, Juancho
12	Salinity, standard deviation	Sal std dev	±	Movilla, Juancho
13	Temperature, water	Temp	°C	Movilla, Juancho
14	Temperature, water, standard deviation	Temp std dev	±	Movilla, Juancho
15	Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)	pCO2water_SST_wet	ppmv	Movilla, Juancho	Calculated using CO2calc
16	Partial pressure of carbon dioxide, standard deviation	pCO2 std dev	±	Movilla, Juancho	Calculated using CO2calc
17	Carbon, inorganic, dissolved	DIC	µmol/kg	Movilla, Juancho	Calculated using CO2calc
18	Carbon, inorganic, dissolved, standard deviation	DIC std dev	±	Movilla, Juancho	Calculated using CO2calc
19	Carbon dioxide	CO2	µmol/kg	Movilla, Juancho	Calculated using CO2calc
20	Carbon dioxide, standard deviation	CO2 std dev	±	Movilla, Juancho	Calculated using CO2calc
21	Bicarbonate ion	[HCO3]-	µmol/kg	Movilla, Juancho	Calculated using CO2calc
22	Bicarbonate ion, standard deviation	[HCO3]- std dev	±	Movilla, Juancho	Calculated using CO2calc
23	Carbonate ion	[CO3]2-	µmol/kg	Movilla, Juancho	Calculated using CO2calc
24	Carbonate ion, standard deviation	[CO3]2- std dev	±	Movilla, Juancho	Calculated using CO2calc
25	Calcite saturation state	Omega Cal		Movilla, Juancho	Calculated using CO2calc
26	Calcite saturation state, standard deviation	Omega Cal std dev	±	Movilla, Juancho	Calculated using CO2calc
27	Aragonite saturation state	Omega Arg		Movilla, Juancho	Calculated using CO2calc
28	Aragonite saturation state, standard deviation	Omega Arg std dev	±	Movilla, Juancho	Calculated using CO2calc
29	Carbonate system computation flag	CSC flag		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
30	Carbon dioxide	CO2	µmol/kg	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	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)
33	Bicarbonate ion	[HCO3]-	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
34	Carbonate ion	[CO3]2-	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
35	Carbon, inorganic, dissolved	DIC	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
36	Aragonite saturation state	Omega Arg		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
37	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:

8700 data points

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