Citation:

j.jembe.2014.04.007

Name: Impact of elevated pCO2 on acid-base regulation of the sea urchin Echinometra mathaei and its relation to resistance to ocean acidification: A study in mesocosms
Published: 2014-09-19
License: https://creativecommons.org/licenses/by/3.0/
Keywords: Acid-base regulation; Animalia; Benthic animals; Benthos; Coast and continental shelf; Containers and aquaria (20-1000 L or < 1 m**2); Echinodermata; Echinometra mathaei; Growth/Morphology; Indian Ocean; Laboratory experiment; Respiration; Single species; Tropical

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Abstract:

Due to their low metabolism and apparent poor ion regulation ability, sea urchins could be particularly sensitive to ocean acidification resulting from increased dissolution of atmospheric carbon dioxide. Therefore, we evaluated the acid-base regulation ability of the coral reef sea urchin Echinometra mathaei and the impact of decreased pH on its growth and respiration activity. The study was conducted in two identical artificial reef mesocosms during seven weeks. Experimental tanks were maintained respectively at mean pHT 7.7 and 8.05 (with field-like night and day variations). The major physico-chemical parameters were identical, only pCO2 and pHT differed. Results indicate that E. mathaei can regulate the pH of its coelomic fluid in the considered range of pH, allowing a sustainable growth and ensuring an unaffected respiratory metabolism, at least at short term.

Keyword(s):

Acid-base regulation; Animalia; Benthic animals; Benthos; Coast and continental shelf; Containers and aquaria (20-1000 L or < 1 m**2); Echinodermata; Echinometra mathaei; Growth/Morphology; Indian Ocean; Laboratory experiment; Respiration; Single species; Tropical

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 2014-09-16.

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Figure	Fig		Moulin, Laure
2	Species	Species		Moulin, Laure
3	Identification	ID		Moulin, Laure		mesocosm
4	pH	pH		Moulin, Laure	Potentiometric	seawater, total scale
5	Aquarium number	Aquarium		Moulin, Laure
6	Individual code	Individual code		Moulin, Laure
7	Growth	Growth	%	Moulin, Laure		as percentage of the initial skeletonweight
8	Respiration rate, oxygen	Resp O2	µmol/g/h	Moulin, Laure		per wet weight
9	Identification	ID		Moulin, Laure		respirometer
10	Date	Date		Moulin, Laure
11	Incubation duration	Inc dur	days	Moulin, Laure
12	Coelomic fluid, pH	pH (cf)		Moulin, Laure	Potentiometric	total scale
13	Coelomic fluid, alkalinity	AT (cf)	µmol/kg	Moulin, Laure	Potentiometric titration
14	Coelomic fluid, partial pressure of carbon dioxide	pCO2 (cf)	µatm	Moulin, Laure	Infrared spectrometric
15	Alkalinity, total	AT	µmol/kg	Moulin, Laure	Potentiometric titration	seawater
16	Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)	pCO2water_SST_wet	µatm	Moulin, Laure	Calculated using seacarb	seawater
17	Salinity	Sal		Moulin, Laure		seawater
18	Temperature, water	Temp	°C	Moulin, Laure		seawater
19	Coelomic fluid, alkalinity	AT (cf)	µmol/kg	Moulin, Laure	Calculated
20	Carbonate system computation flag	CSC flag		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
21	Carbon dioxide	CO2	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
22	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)
23	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)
24	Bicarbonate ion	[HCO3]-	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
25	Carbonate ion	[CO3]2-	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
26	Carbon, inorganic, dissolved	DIC	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
27	Aragonite saturation state	Omega Arg		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
28	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:

3152 data points

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