Citation:

meps09696

Name: Effects of ocean acidification on overwintering juvenile Arctic pteropods Limacina helicina
Published: 2012
License: https://creativecommons.org/licenses/by/3.0/
Keywords: Animalia; Arctic; Bottles or small containers/Aquaria (<20 L); Growth/Morphology; Laboratory experiment; Limacina helicina; Mollusca; Open ocean; Pelagos; Polar; Single species; Zooplankton

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Abstract:

Pteropods are planktonic mollusks that play an important role in the food web of various ecosystems, particularly at high latitudes. Because they produce an aragonitic shell, pteropods are expected to be very sensitive to ocean acidification driven by anthropogenic CO2 emissions. The effect of ocean acidification was investigated using juveniles of the Arctic pteropod Limacina helicina from the Canada Basin of the Arctic Ocean. The animals were maintained in 3 controlled pH conditions (total scale pH [pHT] = 8.05, 7.90 or 7.75) for 8 d, and their mortality and the linear extension of their shell were monitored. The pH did not impact the mortality rate, but the linear extension of the shell decreased as a function of declining pH. Surprisingly, the pteropods were still able to extend their shell at an aragonite saturation state as low as 0.6. Nevertheless, dissolution marks were visible on the whole shell, indicating that calcium carbonate dissolution had also occurred, casting doubts on the ability of the pteropods to maintain a positive balance between precipitation and dissolution of calcium carbonate under corrosive conditions.

Keyword(s):

Animalia; Arctic; Bottles or small containers/Aquaria (<20 L); Growth/Morphology; Laboratory experiment; Limacina helicina; Mollusca; Open ocean; Pelagos; Polar; Single species; Zooplankton

Further details:

Lavigne, Héloïse; Gattuso, Jean-Pierre (2011): seacarb: seawater carbonate chemistry with R. R package version 2.4. https://cran.r-project.org/package=seacarb

Project(s):

Ocean Acidification International Coordination Centre (OA-ICC)

Coverage:

Latitude: 78.720000 * Longitude: -104.790000

Date/Time Start: 2010-04-01T00:00:00 * Date/Time End: 2010-04-30T00:00:00

Event(s):

Deer_Bay * Latitude: 78.720000 * Longitude: -104.790000 * Date/Time Start: 2010-04-01T00:00:00 * Date/Time End: 2010-04-30T00:00:00 * Method/Device: Experiment (EXP)

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). The date of carbonate chemistry calculation by seacarb is 2014-03-31.

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Species	Species		Comeau, Steeve
2	Treatment	Treat		Comeau, Steeve
3	Extension/diameter ratio	Ext/diam		Comeau, Steeve
4	Salinity	Sal		Comeau, Steeve
5	Temperature, water	Temp	°C	Comeau, Steeve
6	pH	pH		Comeau, Steeve	Potentiometric	total scale, at the start
7	pH	pH		Comeau, Steeve	Potentiometric	total scale, at the end
8	Alkalinity, total	AT	µmol/kg	Comeau, Steeve	Potentiometric titration	at the start
9	Alkalinity, total	AT	µmol/kg	Comeau, Steeve	Potentiometric titration	at the end
10	pH	pH		Comeau, Steeve	Calculated	total scale, mean
11	pH, standard deviation	pH std dev	±	Comeau, Steeve	Calculated
12	Alkalinity, total	AT	µmol/kg	Comeau, Steeve	Calculated	mean
13	Alkalinity, total, standard deviation	AT std dev	±	Comeau, Steeve	Calculated
14	Carbonate system computation flag	CSC flag		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
15	Carbon dioxide	CO2	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
16	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)
17	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)
18	Bicarbonate ion	[HCO3]-	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
19	Carbonate ion	[CO3]2-	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
20	Carbon, inorganic, dissolved	DIC	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
21	Aragonite saturation state	Omega Arg		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
22	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:

2156 data points

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