Table 1

Carbonate system parameters of all hypercapnia experiments with Carcinus maenas

1 week experiment 2009

1 week experiment 2010

11 week experiment 2009


Parameter

control

experiment

control

experiment

control

experiment


CT [μmol/kg] (measured)

2025 ± 29

2242 ± 37

1879 ± 7

2047 ± 10

1999 ± 18

2209 ± 24


AT [μmol/kg] (calculated)

2098 ± 29

2062 ± 26

1904 ± 5

1887 ± 9

2046 ± 19

2061 ± 20


pH (measured)

8.12 ± 0.02

7.24 ± 0.02

8.00 ± 0.02

7.28 ± 0.01

8.06 ± 0.01

7.36 ± 0.01


S (measured)

15.35 ± 0.06

15.30 ± 0.00

13.40 ± 0.02

13.4 ± 0.02

14.80 ± 0.13

14.80 ± 0.13


T (measured) [°C]

12.90 ± 0.16

12.98 ± 0.05

10.87 ± 0.02

10.77 ± 0.13

12.90 ± 0.07

12.90 ± 0.07


pCO2 (calculated) [Pa]

53 ± 2

440 ± 25

68 ± 3

361 ± 9

40 ± 5

230 ± 21


Measured parameters of the carbonate system were assessed daily during the acclimation phase of 1 or 11 weeks, while AT and pCO2 were calculated applying the measured parameters and CO2SYS software (see Material and Methods for details). Under experimental conditions (elevated pCO2), a drop in pH of 0.7 - 0.9 units could be observed. The carbonate system remained stable during the acclimation phase in both, short- (1 week) and long-term (11 weeks) experiments. CT = total dissolved inorganic carbon, AT = total alkalinity, S = salinity, T = temperature, pCO2 = partial pressure of CO2. Values are given as mean with standard deviation.

Fehsenfeld et al. BMC Genomics 2011 12:488   doi:10.1186/1471-2164-12-488

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