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

Always quote citation above when using data! You can download the citation in several formats below.

RIS Citation BibTeX Citation Text Citation Facebook TwitterShow Map Google Earth

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

Data

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

1 Species	2 Treat	3 Ext/diam	4 Sal	5 Temp [°C]	6 pH (total scale, at the start, Po...)	7 pH (total scale, at the end, Pote...)	8 AT [µmol/kg] (at the start, Potentiometric ...)	9 AT [µmol/kg] (at the end, Potentiometric ti...)	10 pH (total scale, mean, Calculated)	11 pH std dev [±] (Calculated)	12 AT [µmol/kg] (mean, Calculated)	13 AT std dev [±] (Calculated)	14 CSC flag (Calculated using seacarb afte...)	15 CO2 [µmol/kg] (Calculated using seacarb afte...)	16 pCO2water_SST_wet [µatm] (Calculated using seacarb afte...)	17 fCO2water_SST_wet [µatm] (Calculated using seacarb afte...)	18 [HCO3]- [µmol/kg] (Calculated using seacarb afte...)	19 [CO3]2- [µmol/kg] (Calculated using seacarb afte...)	20 DIC [µmol/kg] (Calculated using seacarb afte...)	21 Omega Arg (Calculated using seacarb afte...)	22 Omega Cal (Calculated using seacarb afte...)
Limacina helicina (Mollusk)	Control	0.224232785	31	-1.6	8.07	8.03	2143	2132	8.05	0.03	2137	8	8	24.6	360.4	358.8	1944.3	75.9	2044.8	1.15	1.85
Limacina helicina (Mollusk)	Control	0.378120982	31	-1.6	8.07	8.03	2143	2132	8.05	0.03	2137	8	8	24.6	360.4	358.8	1944.3	75.9	2044.8	1.15	1.85
Limacina helicina (Mollusk)	Control	0.052439162	31	-1.6	8.07	8.03	2143	2132	8.05	0.03	2137	8	8	24.6	360.4	358.8	1944.3	75.9	2044.8	1.15	1.85
Limacina helicina (Mollusk)	Control	0.351621420	31	-1.6	8.07	8.03	2143	2132	8.05	0.03	2137	8	8	24.6	360.4	358.8	1944.3	75.9	2044.8	1.15	1.85
Limacina helicina (Mollusk)	Control	0.408764245	31	-1.6	8.07	8.03	2143	2132	8.05	0.03	2137	8	8	24.6	360.4	358.8	1944.3	75.9	2044.8	1.15	1.85
Limacina helicina (Mollusk)	Control	0.460083300	31	-1.6	8.07	8.03	2143	2132	8.05	0.03	2137	8	8	24.6	360.4	358.8	1944.3	75.9	2044.8	1.15	1.85
Limacina helicina (Mollusk)	Control	0.349235481	31	-1.6	8.07	8.03	2143	2132	8.05	0.03	2137	8	8	24.6	360.4	358.8	1944.3	75.9	2044.8	1.15	1.85
Limacina helicina (Mollusk)	Control	0.442436518	31	-1.6	8.07	8.03	2143	2132	8.05	0.03	2137	8	8	24.6	360.4	358.8	1944.3	75.9	2044.8	1.15	1.85
Limacina helicina (Mollusk)	Control	0.304318838	31	-1.6	8.07	8.03	2143	2132	8.05	0.03	2137	8	8	24.6	360.4	358.8	1944.3	75.9	2044.8	1.15	1.85
Limacina helicina (Mollusk)	Control	0.383249802	31	-1.6	8.07	8.03	2143	2132	8.05	0.03	2137	8	8	24.6	360.4	358.8	1944.3	75.9	2044.8	1.15	1.85
Limacina helicina (Mollusk)	Control	0.531782156	31	-1.6	8.07	8.03	2143	2132	8.05	0.03	2137	8	8	24.6	360.4	358.8	1944.3	75.9	2044.8	1.15	1.85
Limacina helicina (Mollusk)	Control	0.320971443	31	-1.6	8.07	8.03	2143	2132	8.05	0.03	2137	8	8	24.6	360.4	358.8	1944.3	75.9	2044.8	1.15	1.85
Limacina helicina (Mollusk)	Control	0.283393215	31	-1.6	8.07	8.03	2143	2132	8.05	0.03	2137	8	8	24.6	360.4	358.8	1944.3	75.9	2044.8	1.15	1.85
Limacina helicina (Mollusk)	Control	0.327453739	31	-1.6	8.07	8.03	2143	2132	8.05	0.03	2137	8	8	24.6	360.4	358.8	1944.3	75.9	2044.8	1.15	1.85
Limacina helicina (Mollusk)	Control	0.232215072	31	-1.6	8.07	8.03	2143	2132	8.05	0.03	2137	8	8	24.6	360.4	358.8	1944.3	75.9	2044.8	1.15	1.85
Limacina helicina (Mollusk)	Control	0.327148316	31	-1.6	8.07	8.03	2143	2132	8.05	0.03	2137	8	8	24.6	360.4	358.8	1944.3	75.9	2044.8	1.15	1.85
Limacina helicina (Mollusk)	Control	0.213420085	31	-1.6	8.07	8.03	2143	2132	8.05	0.03	2137	8	8	24.6	360.4	358.8	1944.3	75.9	2044.8	1.15	1.85
Limacina helicina (Mollusk)	Control	0.382220985	31	-1.6	8.07	8.03	2143	2132	8.05	0.03	2137	8	8	24.6	360.4	358.8	1944.3	75.9	2044.8	1.15	1.85
Limacina helicina (Mollusk)	Control	0.314119900	31	-1.6	8.07	8.03	2143	2132	8.05	0.03	2137	8	8	24.6	360.4	358.8	1944.3	75.9	2044.8	1.15	1.85
Limacina helicina (Mollusk)	Control	0.480220181	31	-1.6	8.07	8.03	2143	2132	8.05	0.03	2137	8	8	24.6	360.4	358.8	1944.3	75.9	2044.8	1.15	1.85
Limacina helicina (Mollusk)	Control	0.523001637	31	-1.6	8.07	8.03	2143	2132	8.05	0.03	2137	8	8	24.6	360.4	358.8	1944.3	75.9	2044.8	1.15	1.85
Limacina helicina (Mollusk)	Control	0.133641309	31	-1.6	8.07	8.03	2143	2132	8.05	0.03	2137	8	8	24.6	360.4	358.8	1944.3	75.9	2044.8	1.15	1.85
Limacina helicina (Mollusk)	Control	0.292417039	31	-1.6	8.07	8.03	2143	2132	8.05	0.03	2137	8	8	24.6	360.4	358.8	1944.3	75.9	2044.8	1.15	1.85
Limacina helicina (Mollusk)	Control	0.292436019	31	-1.6	8.07	8.03	2143	2132	8.05	0.03	2137	8	8	24.6	360.4	358.8	1944.3	75.9	2044.8	1.15	1.85
Limacina helicina (Mollusk)	Control	0.335079632	31	-1.6	8.07	8.03	2143	2132	8.05	0.03	2137	8	8	24.6	360.4	358.8	1944.3	75.9	2044.8	1.15	1.85
Limacina helicina (Mollusk)	Control	0.350683903	31	-1.6	8.07	8.03	2143	2132	8.05	0.03	2137	8	8	24.6	360.4	358.8	1944.3	75.9	2044.8	1.15	1.85
Limacina helicina (Mollusk)	Control	0.317444642	31	-1.6	8.07	8.03	2143	2132	8.05	0.03	2137	8	8	24.6	360.4	358.8	1944.3	75.9	2044.8	1.15	1.85
Limacina helicina (Mollusk)	Control	0.490615512	31	-1.6	8.07	8.03	2143	2132	8.05	0.03	2137	8	8	24.6	360.4	358.8	1944.3	75.9	2044.8	1.15	1.85
Limacina helicina (Mollusk)	Control	0.404262960	31	-1.6	8.07	8.03	2143	2132	8.05	0.03	2137	8	8	24.6	360.4	358.8	1944.3	75.9	2044.8	1.15	1.85
Limacina helicina (Mollusk)	Control	0.265179808	31	-1.6	8.07	8.03	2143	2132	8.05	0.03	2137	8	8	24.6	360.4	358.8	1944.3	75.9	2044.8	1.15	1.85
Limacina helicina (Mollusk)	Control	0.102907285	31	-1.6	8.07	8.03	2143	2132	8.05	0.03	2137	8	8	24.6	360.4	358.8	1944.3	75.9	2044.8	1.15	1.85
Limacina helicina (Mollusk)	Control	0.349531846	31	-1.6	8.07	8.03	2143	2132	8.05	0.03	2137	8	8	24.6	360.4	358.8	1944.3	75.9	2044.8	1.15	1.85
Limacina helicina (Mollusk)	Control	0.344347909	31	-1.6	8.07	8.03	2143	2132	8.05	0.03	2137	8	8	24.6	360.4	358.8	1944.3	75.9	2044.8	1.15	1.85
Limacina helicina (Mollusk)	Control	0.354723202	31	-1.6	8.07	8.03	2143	2132	8.05	0.03	2137	8	8	24.6	360.4	358.8	1944.3	75.9	2044.8	1.15	1.85
Limacina helicina (Mollusk)	Control	0.339686225	31	-1.6	8.07	8.03	2143	2132	8.05	0.03	2137	8	8	24.6	360.4	358.8	1944.3	75.9	2044.8	1.15	1.85
Limacina helicina (Mollusk)	Control	0.440483612	31	-1.6	8.07	8.03	2143	2132	8.05	0.03	2137	8	8	24.6	360.4	358.8	1944.3	75.9	2044.8	1.15	1.85
Limacina helicina (Mollusk)	Control	0.289201865	31	-1.6	8.07	8.03	2143	2132	8.05	0.03	2137	8	8	24.6	360.4	358.8	1944.3	75.9	2044.8	1.15	1.85
Limacina helicina (Mollusk)	Control	0.472515189	31	-1.6	8.07	8.03	2143	2132	8.05	0.03	2137	8	8	24.6	360.4	358.8	1944.3	75.9	2044.8	1.15	1.85
Limacina helicina (Mollusk)	Control	0.362177628	31	-1.6	8.07	8.03	2143	2132	8.05	0.03	2137	8	8	24.6	360.4	358.8	1944.3	75.9	2044.8	1.15	1.85
Limacina helicina (Mollusk)	Control	0.350333014	31	-1.6	8.07	8.03	2143	2132	8.05	0.03	2137	8	8	24.6	360.4	358.8	1944.3	75.9	2044.8	1.15	1.85
Limacina helicina (Mollusk)	Control	0.406087334	31	-1.6	8.07	8.03	2143	2132	8.05	0.03	2137	8	8	24.6	360.4	358.8	1944.3	75.9	2044.8	1.15	1.85
Limacina helicina (Mollusk)	Low pH	0.312907388	31	-1.6	7.92	7.86	2102	2106	7.89	0.04	2104	3	8	36.0	527.4	525.0	1968.4	53.1	2057.6	0.81	1.30
Limacina helicina (Mollusk)	Low pH	0.182003308	31	-1.6	7.92	7.86	2102	2106	7.89	0.04	2104	3	8	36.0	527.4	525.0	1968.4	53.1	2057.6	0.81	1.30
Limacina helicina (Mollusk)	Low pH	0.048262721	31	-1.6	7.92	7.86	2102	2106	7.89	0.04	2104	3	8	36.0	527.4	525.0	1968.4	53.1	2057.6	0.81	1.30
Limacina helicina (Mollusk)	Low pH	0.087831242	31	-1.6	7.92	7.86	2102	2106	7.89	0.04	2104	3	8	36.0	527.4	525.0	1968.4	53.1	2057.6	0.81	1.30
Limacina helicina (Mollusk)	Low pH	0.022042192	31	-1.6	7.92	7.86	2102	2106	7.89	0.04	2104	3	8	36.0	527.4	525.0	1968.4	53.1	2057.6	0.81	1.30
Limacina helicina (Mollusk)	Low pH	0.172388207	31	-1.6	7.92	7.86	2102	2106	7.89	0.04	2104	3	8	36.0	527.4	525.0	1968.4	53.1	2057.6	0.81	1.30
Limacina helicina (Mollusk)	Low pH	0.271944528	31	-1.6	7.92	7.86	2102	2106	7.89	0.04	2104	3	8	36.0	527.4	525.0	1968.4	53.1	2057.6	0.81	1.30
Limacina helicina (Mollusk)	Low pH	0.242799352	31	-1.6	7.92	7.86	2102	2106	7.89	0.04	2104	3	8	36.0	527.4	525.0	1968.4	53.1	2057.6	0.81	1.30
Limacina helicina (Mollusk)	Low pH	0.276822396	31	-1.6	7.92	7.86	2102	2106	7.89	0.04	2104	3	8	36.0	527.4	525.0	1968.4	53.1	2057.6	0.81	1.30
Limacina helicina (Mollusk)	Low pH	0.227670869	31	-1.6	7.92	7.86	2102	2106	7.89	0.04	2104	3	8	36.0	527.4	525.0	1968.4	53.1	2057.6	0.81	1.30
Limacina helicina (Mollusk)	Low pH	0.213417367	31	-1.6	7.92	7.86	2102	2106	7.89	0.04	2104	3	8	36.0	527.4	525.0	1968.4	53.1	2057.6	0.81	1.30
Limacina helicina (Mollusk)	Low pH	0.300315264	31	-1.6	7.92	7.86	2102	2106	7.89	0.04	2104	3	8	36.0	527.4	525.0	1968.4	53.1	2057.6	0.81	1.30
Limacina helicina (Mollusk)	Low pH	0.306149057	31	-1.6	7.92	7.86	2102	2106	7.89	0.04	2104	3	8	36.0	527.4	525.0	1968.4	53.1	2057.6	0.81	1.30
Limacina helicina (Mollusk)	Low pH	0.269146788	31	-1.6	7.92	7.86	2102	2106	7.89	0.04	2104	3	8	36.0	527.4	525.0	1968.4	53.1	2057.6	0.81	1.30
Limacina helicina (Mollusk)	Low pH	0.361488298	31	-1.6	7.92	7.86	2102	2106	7.89	0.04	2104	3	8	36.0	527.4	525.0	1968.4	53.1	2057.6	0.81	1.30
Limacina helicina (Mollusk)	Low pH	0.144144008	31	-1.6	7.92	7.86	2102	2106	7.89	0.04	2104	3	8	36.0	527.4	525.0	1968.4	53.1	2057.6	0.81	1.30
Limacina helicina (Mollusk)	Low pH	0.069630274	31	-1.6	7.92	7.86	2102	2106	7.89	0.04	2104	3	8	36.0	527.4	525.0	1968.4	53.1	2057.6	0.81	1.30
Limacina helicina (Mollusk)	Low pH	0.244873426	31	-1.6	7.92	7.86	2102	2106	7.89	0.04	2104	3	8	36.0	527.4	525.0	1968.4	53.1	2057.6	0.81	1.30
Limacina helicina (Mollusk)	Low pH	0.258119815	31	-1.6	7.92	7.86	2102	2106	7.89	0.04	2104	3	8	36.0	527.4	525.0	1968.4	53.1	2057.6	0.81	1.30
Limacina helicina (Mollusk)	Low pH	0.260660266	31	-1.6	7.92	7.86	2102	2106	7.89	0.04	2104	3	8	36.0	527.4	525.0	1968.4	53.1	2057.6	0.81	1.30
Limacina helicina (Mollusk)	Low pH	0.078131347	31	-1.6	7.92	7.86	2102	2106	7.89	0.04	2104	3	8	36.0	527.4	525.0	1968.4	53.1	2057.6	0.81	1.30
Limacina helicina (Mollusk)	Low pH	0.335050589	31	-1.6	7.92	7.86	2102	2106	7.89	0.04	2104	3	8	36.0	527.4	525.0	1968.4	53.1	2057.6	0.81	1.30
Limacina helicina (Mollusk)	Very low pH	0.043262835	31	-1.6	7.78	7.74	2052	2065	7.76	0.03	2058	11	8	48.3	707.4	704.3	1957.5	39.2	2045.0	0.60	0.96
Limacina helicina (Mollusk)	Very low pH	0.248178668	31	-1.6	7.78	7.74	2052	2065	7.76	0.03	2058	11	8	48.3	707.4	704.3	1957.5	39.2	2045.0	0.60	0.96
Limacina helicina (Mollusk)	Very low pH	0.293577806	31	-1.6	7.78	7.74	2052	2065	7.76	0.03	2058	11	8	48.3	707.4	704.3	1957.5	39.2	2045.0	0.60	0.96
Limacina helicina (Mollusk)	Very low pH	0.202876285	31	-1.6	7.78	7.74	2052	2065	7.76	0.03	2058	11	8	48.3	707.4	704.3	1957.5	39.2	2045.0	0.60	0.96
Limacina helicina (Mollusk)	Very low pH	0.365366457	31	-1.6	7.78	7.74	2052	2065	7.76	0.03	2058	11	8	48.3	707.4	704.3	1957.5	39.2	2045.0	0.60	0.96
Limacina helicina (Mollusk)	Very low pH	0.138273017	31	-1.6	7.78	7.74	2052	2065	7.76	0.03	2058	11	8	48.3	707.4	704.3	1957.5	39.2	2045.0	0.60	0.96
Limacina helicina (Mollusk)	Very low pH	0.101232723	31	-1.6	7.78	7.74	2052	2065	7.76	0.03	2058	11	8	48.3	707.4	704.3	1957.5	39.2	2045.0	0.60	0.96
Limacina helicina (Mollusk)	Very low pH	0.145990508	31	-1.6	7.78	7.74	2052	2065	7.76	0.03	2058	11	8	48.3	707.4	704.3	1957.5	39.2	2045.0	0.60	0.96
Limacina helicina (Mollusk)	Very low pH	0.006942620	31	-1.6	7.78	7.74	2052	2065	7.76	0.03	2058	11	8	48.3	707.4	704.3	1957.5	39.2	2045.0	0.60	0.96
Limacina helicina (Mollusk)	Very low pH	0.260611669	31	-1.6	7.78	7.74	2052	2065	7.76	0.03	2058	11	8	48.3	707.4	704.3	1957.5	39.2	2045.0	0.60	0.96
Limacina helicina (Mollusk)	Very low pH	0.199287999	31	-1.6	7.78	7.74	2052	2065	7.76	0.03	2058	11	8	48.3	707.4	704.3	1957.5	39.2	2045.0	0.60	0.96
Limacina helicina (Mollusk)	Very low pH	0.013909982	31	-1.6	7.78	7.74	2052	2065	7.76	0.03	2058	11	8	48.3	707.4	704.3	1957.5	39.2	2045.0	0.60	0.96
Limacina helicina (Mollusk)	Very low pH	0.091625602	31	-1.6	7.78	7.74	2052	2065	7.76	0.03	2058	11	8	48.3	707.4	704.3	1957.5	39.2	2045.0	0.60	0.96
Limacina helicina (Mollusk)	Very low pH	0.321197258	31	-1.6	7.78	7.74	2052	2065	7.76	0.03	2058	11	8	48.3	707.4	704.3	1957.5	39.2	2045.0	0.60	0.96
Limacina helicina (Mollusk)	Very low pH	0.207360157	31	-1.6	7.78	7.74	2052	2065	7.76	0.03	2058	11	8	48.3	707.4	704.3	1957.5	39.2	2045.0	0.60	0.96
Limacina helicina (Mollusk)	Very low pH	0.120135326	31	-1.6	7.78	7.74	2052	2065	7.76	0.03	2058	11	8	48.3	707.4	704.3	1957.5	39.2	2045.0	0.60	0.96
Limacina helicina (Mollusk)	Very low pH	0.200667255	31	-1.6	7.78	7.74	2052	2065	7.76	0.03	2058	11	8	48.3	707.4	704.3	1957.5	39.2	2045.0	0.60	0.96
Limacina helicina (Mollusk)	Very low pH	0.072822662	31	-1.6	7.78	7.74	2052	2065	7.76	0.03	2058	11	8	48.3	707.4	704.3	1957.5	39.2	2045.0	0.60	0.96
Limacina helicina (Mollusk)	Very low pH	0.200315757	31	-1.6	7.78	7.74	2052	2065	7.76	0.03	2058	11	8	48.3	707.4	704.3	1957.5	39.2	2045.0	0.60	0.96
Limacina helicina (Mollusk)	Very low pH	0.231711780	31	-1.6	7.78	7.74	2052	2065	7.76	0.03	2058	11	8	48.3	707.4	704.3	1957.5	39.2	2045.0	0.60	0.96
Limacina helicina (Mollusk)	Very low pH	0.205836621	31	-1.6	7.78	7.74	2052	2065	7.76	0.03	2058	11	8	48.3	707.4	704.3	1957.5	39.2	2045.0	0.60	0.96
Limacina helicina (Mollusk)	Very low pH	0.137143692	31	-1.6	7.78	7.74	2052	2065	7.76	0.03	2058	11	8	48.3	707.4	704.3	1957.5	39.2	2045.0	0.60	0.96
Limacina helicina (Mollusk)	Very low pH	0.334639383	31	-1.6	7.78	7.74	2052	2065	7.76	0.03	2058	11	8	48.3	707.4	704.3	1957.5	39.2	2045.0	0.60	0.96
Limacina helicina (Mollusk)	Very low pH	0.230750504	31	-1.6	7.78	7.74	2052	2065	7.76	0.03	2058	11	8	48.3	707.4	704.3	1957.5	39.2	2045.0	0.60	0.96
Limacina helicina (Mollusk)	Very low pH	0.084983118	31	-1.6	7.78	7.74	2052	2065	7.76	0.03	2058	11	8	48.3	707.4	704.3	1957.5	39.2	2045.0	0.60	0.96
Limacina helicina (Mollusk)	Very low pH	0.235037569	31	-1.6	7.78	7.74	2052	2065	7.76	0.03	2058	11	8	48.3	707.4	704.3	1957.5	39.2	2045.0	0.60	0.96
Limacina helicina (Mollusk)	Very low pH	0.173626978	31	-1.6	7.78	7.74	2052	2065	7.76	0.03	2058	11	8	48.3	707.4	704.3	1957.5	39.2	2045.0	0.60	0.96
Limacina helicina (Mollusk)	Very low pH	0.316319654	31	-1.6	7.78	7.74	2052	2065	7.76	0.03	2058	11	8	48.3	707.4	704.3	1957.5	39.2	2045.0	0.60	0.96
Limacina helicina (Mollusk)	Very low pH	0.069152622	31	-1.6	7.78	7.74	2052	2065	7.76	0.03	2058	11	8	48.3	707.4	704.3	1957.5	39.2	2045.0	0.60	0.96
Limacina helicina (Mollusk)	Very low pH	0.141008349	31	-1.6	7.78	7.74	2052	2065	7.76	0.03	2058	11	8	48.3	707.4	704.3	1957.5	39.2	2045.0	0.60	0.96
Limacina helicina (Mollusk)	Very low pH	0.178208797	31	-1.6	7.78	7.74	2052	2065	7.76	0.03	2058	11	8	48.3	707.4	704.3	1957.5	39.2	2045.0	0.60	0.96
Limacina helicina (Mollusk)	Very low pH	0.024878871	31	-1.6	7.78	7.74	2052	2065	7.76	0.03	2058	11	8	48.3	707.4	704.3	1957.5	39.2	2045.0	0.60	0.96
Limacina helicina (Mollusk)	Very low pH	0.131287072	31	-1.6	7.78	7.74	2052	2065	7.76	0.03	2058	11	8	48.3	707.4	704.3	1957.5	39.2	2045.0	0.60	0.96
Limacina helicina (Mollusk)	Very low pH	0.205296780	31	-1.6	7.78	7.74	2052	2065	7.76	0.03	2058	11	8	48.3	707.4	704.3	1957.5	39.2	2045.0	0.60	0.96
Limacina helicina (Mollusk)	Very low pH	0.047748563	31	-1.6	7.78	7.74	2052	2065	7.76	0.03	2058	11	8	48.3	707.4	704.3	1957.5	39.2	2045.0	0.60	0.96