Citation:

PANGAEA.745083

Name: Seawater carbonate chemistry and biological processes during experiments with Limacina helicina, 2009
Published: 2010-08-26
License: https://creativecommons.org/licenses/by/3.0/
Keywords: Animalia; Arctic; Behaviour; Calcification/Dissolution; Containers and aquaria (20-1000 L or < 1 m**2); Limacina helicina; Mollusca; Open ocean; Pelagos; Polar; Respiration; Single species; Zooplankton

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Abstract:

Thecosome pteropods (pelagic mollusks) can play a key role in the food web of various marine ecosystems. They are a food source for zooplankton or higher predators such as fishes, whales and birds that is particularly important in high latitude areas. Since they harbor a highly soluble aragonitic shell, they could be very sensitive to ocean acidification driven by the increase of anthropogenic CO2 emissions. The effect of changes in the seawater chemistry was investigated on Limacina helicina, a key species of Arctic pelagic ecosystems. Individuals were kept in the laboratory under controlled pCO2 levels of 280, 380, 550, 760 and 1020 µatm and at control (0°C) and elevated (4°C) temperatures. The respiration rate was unaffected by pCO2 at control temperature, but significantly increased as a function of the pCO2 level at elevated temperature. pCO2 had no effect on the gut clearance rate at either temperature. Precipitation of CaCO3, measured as the incorporation of 45Ca, significantly declined as a function of pCO2 at both temperatures. The decrease in calcium carbonate precipitation was highly correlated to the aragonite saturation state. Even though this study demonstrates that pteropods are able to precipitate calcium carbonate at low aragonite saturation state, the results support the current concern for the future of Arctic pteropods, as the production of their shell appears to be very sensitive to decreased pH. A decline of pteropod populations would likely cause dramatic changes to various pelagic ecosystems.

Keyword(s):

Animalia; Arctic; Behaviour; Calcification/Dissolution; Containers and aquaria (20-1000 L or < 1 m**2); Limacina helicina; Mollusca; Open ocean; Pelagos; Polar; Respiration; Single species; Zooplankton

Related to:

Comeau, Steeve; Jeffree, Ross; Teyssié, Jean-Louis; Gattuso, Jean-Pierre (2010): Response of the Arctic pteropod Limacina helicina to projected future environmental conditions. PLoS ONE, 5(6), e11362, https://doi.org/10.1371/journal.pone.0011362

Project(s):

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	Identification	ID		Comeau, Steeve
2	Salinity	Sal		Comeau, Steeve
3	Temperature, water	Temp	°C	Comeau, Steeve
4	Experimental treatment	Exp treat		Comeau, Steeve		CT- control temperature, HT- high temperature
5	Species	Species		Comeau, Steeve
6	pH	pH		Comeau, Steeve	pH meter (Metrohm, 826 pH mobile)	Total scale
7	Alkalinity, total	AT	µmol/kg	Comeau, Steeve	Alkalinity, Gran titration (Gran, 1950)
8	Carbonate system computation flag	CSC flag		Nisumaa, Anne-Marin	Calculated using seacarb after Nisumaa et al. (2010)
9	Carbon dioxide	CO2	µmol/kg	Nisumaa, Anne-Marin	Calculated using seacarb after Nisumaa et al. (2010)
10	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)
11	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)
12	Bicarbonate ion	[HCO3]-	µmol/kg	Nisumaa, Anne-Marin	Calculated using seacarb after Nisumaa et al. (2010)
13	Carbonate ion	[CO3]2-	µmol/kg	Nisumaa, Anne-Marin	Calculated using seacarb after Nisumaa et al. (2010)
14	Carbon, inorganic, dissolved	DIC	µmol/kg	Nisumaa, Anne-Marin	Calculated using seacarb after Nisumaa et al. (2010)
15	Aragonite saturation state	Omega Arg		Nisumaa, Anne-Marin	Calculated using seacarb after Nisumaa et al. (2010)
16	Calcite saturation state	Omega Cal		Nisumaa, Anne-Marin	Calculated using seacarb after Nisumaa et al. (2010)
17	Gut clearance coefficient	k	#/h	Comeau, Steeve	Spectro-fluorometry using a Turner-Designs Fluorometer; after Lorenzen, 1967
18	Respiration rate, oxygen	Resp O2	µmol/mg/h	Comeau, Steeve	Titration, Winkler
19	Respiration rate, oxygen, standard deviation	Resp O2 std dev	±	Comeau, Steeve	Calculated
20	Calcium carbonate passive adsorption	CaCO3 ads	µmol/g/h	Comeau, Steeve
21	Calcium carbonate passive adsorption, standard deviation	CaCO3 ads std dev	±	Comeau, Steeve
22	Calcium carbonate precipitated	CaCO3 prec	µmol/g/h	Comeau, Steeve
23	Calcium carbonate precipitated, standard deviation	CaCO3 prec std dev	±	Comeau, Steeve

License:

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

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

390 data points

Data

Download dataset as tab-delimited text — use the following character encoding:

1 ID	2 Sal	3 Temp [°C]	4 Exp treat	5 Species	6 pH	7 AT [µmol/kg]	8 CSC flag	9 CO2 [µmol/kg]	10 pCO2water_SST_wet [µatm]	11 fCO2water_SST_wet [µatm]	12 [HCO3]- [µmol/kg]	13 [CO3]2- [µmol/kg]	14 DIC [µmol/kg]	15 Omega Arg	16 Omega Cal	17 k [#/h]	18 Resp O2 [µmol/mg/h]	19 Resp O2 std dev [±]	20 CaCO3 ads [µmol/g/h]	21 CaCO3 ads std dev [±]	22 CaCO3 prec [µmol/g/h]	23 CaCO3 prec std dev [±]
gut clearance and respiration rates experiment	34.5	0.3	pCO2=280, CT	Limacina helicina	8.20	2275	8	15.99	257.67	256.55	1953.99	126.74	2096.7	1.91	3.04	0.061	5600	700
gut clearance and respiration rates experiment	34.5	0.3	pCO2=380, CT	Limacina helicina	8.04	2275	8	24.16	389.32	387.64	2042.53	91.66	2158.4	1.38	2.20	0.111	5700	500
gut clearance and respiration rates experiment	34.5	0.3	pCO2=550, CT	Limacina helicina	7.91	2275	8	33.47	539.40	537.07	2097.85	69.79	2201.1	1.05	1.68	0.052	5900	500
gut clearance and respiration rates experiment	34.5	0.3	pCO2=780, CT	Limacina helicina	7.76	2275	8	48.38	779.62	776.26	2146.59	50.55	2245.5	0.76	1.21	0.086	5900	800
gut clearance and respiration rates experiment	34.5	0.3	pCO2=1120, CT	Limacina helicina	7.63	2275	8	66.23	1067.25	1062.64	2178.36	38.03	2282.6	0.57	0.91	0.100	6200	300
gut clearance and respiration rates experiment	34.5	3.8	pCO2=280, HT	Limacina helicina	8.18	2278	8	14.92	274.31	273.18	1930.49	137.97	2083.4	2.08	3.30	0.183	6000	500
gut clearance and respiration rates experiment	34.5	3.8	pCO2=380, HT	Limacina helicina	8.04	2278	8	21.50	395.22	393.59	2014.97	104.33	2140.8	1.57	2.50	0.192	6500	500
gut clearance and respiration rates experiment	34.5	3.8	pCO2=550, HT	Limacina helicina	7.92	2278	8	29.15	535.91	533.70	2072.63	81.40	2183.2	1.23	1.95	0.183	7200	700
gut clearance and respiration rates experiment	34.5	3.8	pCO2=780, HT	Limacina helicina	7.78	2278	8	41.26	758.58	755.45	2125.35	60.47	2227.1	0.91	1.45	0.224	7200	400
gut clearance and respiration rates experiment	34.5	3.8	pCO2=1120, HT	Limacina helicina	7.62	2278	8	60.89	1119.58	1114.96	2170.12	42.72	2273.7	0.64	1.02	0.221	7500	600
45Ca experiment	34.5	0.5	pCO2=280, CT	Limacina helicina	8.17	2271	8	17.14	278.38	277.18	1966.84	120.05	2104.0	1.81	2.88				0.30	0.08	0.61	0.05
45Ca experiment	34.5	0.5	pCO2=380, CT	Limacina helicina	8.03	2271	8	24.57	398.95	397.23	2041.98	90.29	2156.8	1.36	2.17				0.32	0.08	0.41	0.04
45Ca experiment	34.5	0.5	pCO2=550, CT	Limacina helicina	7.90	2271	8	34.03	552.54	550.16	2096.55	68.72	2199.3	1.04	1.65				0.37	0.13	0.25	0.04
45Ca experiment	34.5	0.5	pCO2=780, CT	Limacina helicina	7.77	2271	8	46.83	760.45	757.17	2138.98	51.97	2237.8	0.78	1.25				0.36	0.14	0.02	0.04
45Ca experiment	34.5	0.5	pCO2=1120, CT	Limacina helicina	7.63	2271	8	65.69	1066.78	1062.18	2173.76	38.26	2277.7	0.58	0.92				0.39	0.08	-0.05	0.02
45Ca experiment	34.5	3.9	pCO2=280, HT	Limacina helicina	8.18	2279	8	14.87	274.49	273.36	1930.21	138.51	2083.6	2.09	3.32				0.32	0.04	0.68	0.03
45Ca experiment	34.5	3.9	pCO2=380, HT	Limacina helicina	8.06	2279	8	20.36	375.69	374.14	2004.06	109.09	2133.5	1.65	2.61				0.30	0.07	0.46	0.05
45Ca experiment	34.5	3.9	pCO2=550, HT	Limacina helicina	7.89	2279	8	31.33	578.23	575.85	2085.39	76.75	2193.5	1.16	1.84				0.34	0.10	0.44	0.06
45Ca experiment	34.5	3.9	pCO2=780, HT	Limacina helicina	7.80	2279	8	39.17	722.86	719.88	2119.03	63.39	2221.6	0.96	1.52				0.37	0.09	0.25	0.06
45Ca experiment	34.5	3.9	pCO2=1120, HT	Limacina helicina	7.61	2279	8	62.22	1148.11	1143.38	2173.03	41.97	2277.2	0.63	1.00				0.37	0.08	0.02	0.04