Citation:

bg-8-919-2011

Name: Seawater carbonate chemistry and biological processes of Limacina helicina during experiments, 2011
Published: 2011-06-21
License: https://creativecommons.org/licenses/by/3.0/
Keywords: Animalia; Arctic; Calcification/Dissolution; Containers and aquaria (20-1000 L or < 1 m**2); Growth/Morphology; Laboratory experiment; Limacina helicina; Mollusca; Mortality/Survival; Open ocean; Pelagos; Polar; Single species; Temperature; Zooplankton

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Abstract:

Due to their aragonitic shell, thecosome pteropods may be particularly vulnerable to ocean acidification driven by anthropogenic CO2 emissions. This applies specifically to species inhabiting Arctic surface waters that are projected to become temporarily and locally undersaturated with respect to aragonite as early as 2016. This study investigated the effects of rising partial pressure of CO2 (pCO2) and elevated temperature on pre-winter juveniles of the polar pteropod Limacina helicina. After a 29 day experiment in September/October 2009 at three different temperatures and under pCO2 scenarios projected for this century, mortality, shell degradation, shell diameter and shell increment were investigated. Temperature and pCO2 had a significant effect on mortality, but temperature was the overriding factor. Shell diameter, shell increment and shell degradation were significantly impacted by pCO2 but not by temperature. Mortality was 46% higher at 8 °C than at in situ temperature (3 °C), and 14% higher at 1100 ?atm than at 230 ?atm. Shell diameter and increment were reduced by 10 and 12% at 1100 ?atm and 230 ?atm, respectively, and shell degradation was 41% higher at elevated compared to ambient pCO2. We conclude that pre-winter juveniles will be negatively affected by both rising temperature and pCO2 which may result in a possible decline in abundance of the overwintering population, the basis for next year's reproduction.

Keyword(s):

Animalia; Arctic; Calcification/Dissolution; Containers and aquaria (20-1000 L or < 1 m**2); Growth/Morphology; Laboratory experiment; Limacina helicina; Mollusca; Mortality/Survival; Open ocean; Pelagos; Polar; Single species; Temperature; Zooplankton

Project(s):

Biological Impacts of Ocean Acidification (BIOACID)

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	Experimental treatment	Exp treat		Lischka, Silke
2	Salinity	Sal		Lischka, Silke
3	Temperature, water	Temp	°C	Lischka, Silke		Start
4	Temperature, water	Temp	°C	Lischka, Silke		End
5	Alkalinity, total	AT	µmol/kg	Lischka, Silke	Metrohm Titrando titrator	Start
6	Alkalinity, total	AT	µmol/kg	Lischka, Silke	Metrohm Titrando titrator	End
7	pH	pH		Lischka, Silke	pH meter (Metrohm, 826 pH mobile)	Total scale; Start
8	pH	pH		Lischka, Silke	pH meter (Metrohm, 826 pH mobile)	Total scale; End
9	Carbon, inorganic, dissolved	DIC	µmol/kg	Lischka, Silke	Continuous Flow Analysis (CFA)	Start
10	Carbon, inorganic, dissolved	DIC	µmol/kg	Lischka, Silke	Continuous Flow Analysis (CFA)	End
11	Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)	pCO2water_SST_wet	µatm	Lischka, Silke	Calculated using CO2SYS	Start
12	Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)	pCO2water_SST_wet	µatm	Lischka, Silke	Calculated using CO2SYS	End
13	Aragonite saturation state	Omega Arg		Lischka, Silke	Calculated using CO2SYS	Start
14	Aragonite saturation state	Omega Arg		Lischka, Silke	Calculated using CO2SYS	End
15	Silicon	Si	mmol/kg	Lischka, Silke		Start
16	Silicon	Si	mmol/kg	Lischka, Silke
17	Sample ID	Sample ID		Lischka, Silke
18	Mortality	Mortality	%	Lischka, Silke
19	Limacina helicina, shell increment versus diameter	L. helicina shell incr/diam	µm	Lischka, Silke	Stereomicroscopy (Leica MZ 16 F)
20	Limacina helicina, length	L. helicina l	mm	Lischka, Silke	Stereomicroscopy (Leica MZ 16 F)
21	Limacina helicina, shell degradation	L. helicina shell degr		Lischka, Silke	Stereomicroscopy (Leica MZ 16 F)	Milky
22	Limacina helicina, shell degradation	L. helicina shell degr		Lischka, Silke	Stereomicroscopy (Leica MZ 16 F)	Brownish
23	Limacina helicina, shell degradation	L. helicina shell degr		Lischka, Silke	Stereomicroscopy (Leica MZ 16 F)	Scars
24	Limacina helicina, shell degradation	L. helicina shell degr		Lischka, Silke	Stereomicroscopy (Leica MZ 16 F)	Corrosion
25	Limacina helicina, shell degradation	L. helicina shell degr		Lischka, Silke	Stereomicroscopy (Leica MZ 16 F)	Perforations
26	Carbonate system computation flag	CSC flag		Nisumaa, Anne-Marin	Calculated using seacarb after Nisumaa et al. (2010)
27	Carbon dioxide	CO2	µmol/kg	Nisumaa, Anne-Marin	Calculated using seacarb after Nisumaa et al. (2010)
28	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)
29	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)
30	Bicarbonate ion	[HCO3]-	µmol/kg	Nisumaa, Anne-Marin	Calculated using seacarb after Nisumaa et al. (2010)
31	Carbonate ion	[CO3]2-	µmol/kg	Nisumaa, Anne-Marin	Calculated using seacarb after Nisumaa et al. (2010)
32	Carbon, inorganic, dissolved	DIC	µmol/kg	Nisumaa, Anne-Marin	Calculated using seacarb after Nisumaa et al. (2010)
33	Aragonite saturation state	Omega Arg		Nisumaa, Anne-Marin	Calculated using seacarb after Nisumaa et al. (2010)
34	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:

2461 data points

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