Citation:

s00300-012-1174-7

Name: Seawater carbonate chemistry, survival rate, shell size, calcification rate of the planktonic foraminifer Neogloboquadrina pachyderma (sinistral) in a laboratory experiment
Published: 2012
License: https://creativecommons.org/licenses/by/3.0/
Keywords: Arctic; Bottles or small containers/Aquaria (<20 L); Calcification/Dissolution; Chromista; Foraminifera; Growth/Morphology; Heterotrophic prokaryotes; Laboratory experiment; Mortality/Survival; Neogloboquadrina pachyderma; Open ocean; Pelagos; Polar; Single species

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Abstract:

The present study investigated the effects of ocean acidification and temperature increase on Neogloboquadrina pachyderma (sinistral), the dominant planktonic foraminifer in the Arctic Ocean. Due to the naturally low concentration of [CO3] 2- in the Arctic, this foraminifer could be particularly sensitive to the forecast changes in seawater carbonate chemistry. To assess potential responses to ocean acidification and climate change, perturbation experiments were performed on juvenile and adult specimens by manipulating seawater to mimic the present-day carbon dioxide level and a future ocean acidification scenario (end of the century) under controlled (in situ) and elevated temperatures (1 and 4 °C, respectively). Foraminifera mortality was unaffected under all the different experiment treatments. Under low pH, N. pachyderma (s) shell net calcification rates decreased. This decrease was higher (30 %) in the juvenile specimens than decrease observed in the adults (21 %) ones. However, decrease in net calcification was moderated when both, pH decreased and temperature increased simultaneously. When only temperature increased, a net calcification rate for both life stages was not affected. These results show that forecast changes in seawater chemistry would impact calcite production in N. pachyderma (s), possibly leading to a reduction of calcite flux contribution and consequently a decrease in biologic pump efficiency.

Keyword(s):

Arctic; Bottles or small containers/Aquaria (<20 L); Calcification/Dissolution; Chromista; Foraminifera; Growth/Morphology; Heterotrophic prokaryotes; Laboratory experiment; Mortality/Survival; Neogloboquadrina pachyderma; Open ocean; Pelagos; Polar; Single species

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)

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 2014-03-24.

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Species	Species		Manno, Clara
2	Treatment	Treat		Manno, Clara
3	Stage	Stage		Manno, Clara
4	Replicate	Repl		Manno, Clara
5	Survival	Survival	%	Manno, Clara
6	Sample code/label	Sample label		Manno, Clara
7	Diameter	Ø	µm	Manno, Clara		shell size
8	Calcification rate	Calc rate	nmol/#/h	Manno, Clara
9	Temperature, water	Temp	°C	Manno, Clara		start
10	Salinity	Sal		Manno, Clara
11	pH	pH		Manno, Clara	Calculated using CO2SYS	start, total scale
12	Alkalinity, total	AT	µmol/kg	Manno, Clara	Potentiometric titration	start
13	Carbon, inorganic, dissolved	DIC	µmol/kg	Manno, Clara	Coulometric titration	start
14	Carbonate ion	[CO3]2-	µmol/kg	Manno, Clara	Calculated using CO2SYS	start
15	Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)	pCO2water_SST_wet	µatm	Manno, Clara	Calculated using CO2SYS	start
16	Calcite saturation state	Omega Cal		Manno, Clara	Calculated using CO2SYS	start
17	Temperature, water	Temp	°C	Manno, Clara		end
18	pH	pH		Manno, Clara	Calculated using CO2SYS	end, total scale
19	Alkalinity, total	AT	µmol/kg	Manno, Clara	Potentiometric titration	end
20	Carbon, inorganic, dissolved	DIC	µmol/kg	Manno, Clara	Coulometric titration	end
21	Carbonate ion	[CO3]2-	µmol/kg	Manno, Clara	Calculated using CO2SYS	end
22	Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)	pCO2water_SST_wet	µatm	Manno, Clara	Calculated using CO2SYS	end
23	Calcite saturation state	Omega Cal		Manno, Clara	Calculated using CO2SYS	end
24	Carbonate system computation flag	CSC flag		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
25	pH	pH		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)	start, total scale
26	Carbon dioxide	CO2	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)	start
27	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)	start
28	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)	start
29	Bicarbonate ion	[HCO3]-	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)	start
30	Carbonate ion	[CO3]2-	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)	start
31	Aragonite saturation state	Omega Arg		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)	start
32	Calcite saturation state	Omega Cal		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)	start
33	pH	pH		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)	end, total scale
34	Carbon dioxide	CO2	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)	end
35	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)	end
36	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)	end
37	Bicarbonate ion	[HCO3]-	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)	end
38	Carbonate ion	[CO3]2-	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)	end
39	Aragonite saturation state	Omega Arg		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)	end
40	Calcite saturation state	Omega Cal		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)	end

License:

Creative Commons Attribution 3.0 Unported (CC-BY-3.0)

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

7932 data points

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