Calcification Relative to Calcification at Current pH

For a description of this page click here

Coccolithophore [Emiliania huxleyi]

Statistics  
  Decline in pH from the Present
 
0.0 to 0.09
0.09 to 0.17
0.17 to 0.3
0.3 to 0.5
More than 0.5
Number of Results
1
3
9
4
 
Arithmetic Mean
0.9
0.81
1.02
0.77
 
Standard Error
0
0.1
0.13
0.07
 

Individual Experiement Results  
      Decline in pH from the Present    

Journal References

Experimental Conditions
0.0
to
0.09
0.09
to
0.17
0.17
to
0.3
0.3
to
0.5
More
than
0.5

De Bodt et al. (2010)

Calcification rates of cocolithophores (Emiliania huxleyi, strain AC481) grown under normal and reduced pH conditions. pH was altered by the addition of CO2. Incident photon flux density was 150 Ámol m-2 s-1, light/dark cycle was 14h/10h, salinity was 35.6 and the culture medium was enriched with nitrates and phosphates to yield a final concentration of 32 Ámol L-1 and 1 Ámol L-1, respectively.
 

 

0.64

 

 

De Bodt et al. (2010)

Calcification rates of cocolithophores (Emiliania huxleyi, strain AC481) grown under normal and reduced pH conditions. pH was altered by the addition of CO2. Incident photon flux density was 150 Ámol m-2 s-1, light/dark cycle was 14h/10h, salinity was 35.6 and the culture medium was enriched with nitrates and phosphates to yield a final concentration of 32 Ámol L-1 and 1 Ámol L-1, respectively.
 

 

0.80

 

 

De Bodt et al. (2010)

Calcification rates of cocolithophores (Emiliania huxleyi, strain AC481) grown under normal and reduced pH conditions. pH was altered by the addition of CO2. Incident photon flux density was 150 Ámol m-2 s-1, light/dark cycle was 14h/10h, salinity was 35.6 and the culture medium was enriched with nitrates and phosphates to yield a final concentration of 32 Ámol L-1 and 1 Ámol L-1, respectively.
 

0.80

 

 

 

De Bodt et al. (2010)

Calcification rates of cocolithophores (Emiliania huxleyi, strain AC481) grown under normal and reduced pH conditions. pH was altered by the addition of CO2. Incident photon flux density was 150 Ámol m-2 s-1, light/dark cycle was 14h/10h, salinity was 35.6 and the culture medium was enriched with nitrates and phosphates to yield a final concentration of 32 Ámol L-1 and 1 Ámol L-1, respectively.
 

0.60

 

 

 

Iglesias-Rodriguez et al. (2008)

Experiments were conducted by bubbling cultures of E. huxleyi using air with different CO2 partial pressures.
0.90

 

 

 

 

Iglesias-Rodriguez et al. (2008)

Experiments were conducted by bubbling cultures of E. huxleyi using air with different CO2 partial pressures.
 

 

1.45

 

 

Iglesias-Rodriguez et al. (2008)

Experiments were conducted by bubbling cultures of E. huxleyi using air with different CO2 partial pressures.
 

 

1.89

 

 

Langer et al. (2009)

Growth rate of the coccolithophore Emiliania huxleyi (strain code RCC1238) grown under normal and reduced pH conditions. Temperature = 20░C, salinity = 32 psu, 16/8 hour light/dark cycle, light intensity = 400 Ámol photons m-2 s-1, North Sea seawater enriched with 100 Ámol L-1 nitrate, 6.25 Ámol L-1 phosphate and trace metals and vitamins as in f/2 medium. pH was altered by the addition of HCl.
 

 

0.95

 

 

Langer et al. (2009)

Growth rate of the coccolithophore Emiliania huxleyi (strain code RCC1238) grown under normal and reduced pH conditions. Temperature = 20░C, salinity = 32 psu, 16/8 hour light/dark cycle, light intensity = 400 Ámol photons m-2 s-1, North Sea seawater enriched with 100 Ámol L-1 nitrate, 6.25 Ámol L-1 phosphate and trace metals and vitamins as in f/2 medium. pH was altered by the addition of HCl.
 

 

 

0.99

 

Langer et al. (2009)

Growth rate of the coccolithophore Emiliania huxleyi (strain code RCC1216) grown under normal and reduced pH conditions. Temperature = 20░C, salinity = 32 psu, 16/8 hour light/dark cycle, light intensity = 400 Ámol photons m-2 s-1, North Sea seawater enriched with 100 Ámol L-1 nitrate, 6.25 Ámol L-1 phosphate and trace metals and vitamins as in f/2 medium. pH was altered by the addition of HCl.
 

 

0.92

 

 

Langer et al. (2009)

Growth rate of the coccolithophore Emiliania huxleyi (strain code RCC1216) grown under normal and reduced pH conditions. Temperature = 20░C, salinity = 32 psu, 16/8 hour light/dark cycle, light intensity = 400 Ámol photons m-2 s-1, North Sea seawater enriched with 100 Ámol L-1 nitrate, 6.25 Ámol L-1 phosphate and trace metals and vitamins as in f/2 medium. pH was altered by the addition of HCl.
 

 

 

0.72

 

Langer et al. (2009)

Growth rate of the coccolithophore Emiliania huxleyi (strain code RCC1256) grown under normal and reduced pH conditions. Temperature = 20░C, salinity = 32 psu, 16/8 hour light/dark cycle, light intensity = 400 Ámol photons m-2 s-1, North Sea seawater enriched with 100 Ámol L-1 nitrate, 6.25 Ámol L-1 phosphate and trace metals and vitamins as in f/2 medium. pH was altered by the addition of HCl.
 

1.03

 

 

 

Langer et al. (2009)

Growth rate of the coccolithophore Emiliania huxleyi (strain code RCC1256) grown under normal and reduced pH conditions. Temperature = 20░C, salinity = 32 psu, 16/8 hour light/dark cycle, light intensity = 400 Ámol photons m-2 s-1, North Sea seawater enriched with 100 Ámol L-1 nitrate, 6.25 Ámol L-1 phosphate and trace metals and vitamins as in f/2 medium. pH was altered by the addition of HCl.
 

 

 

0.73

 

Langer et al. (2009)

Growth rate of the coccolithophore Emiliania huxleyi (strain code RCC1212) grown under normal and reduced pH conditions. Temperature = 20░C, salinity = 32 psu, 16/8 hour light/dark cycle, light intensity = 400 Ámol photons m-2 s-1, North Sea seawater enriched with 100 Ámol L-1 nitrate, 6.25 Ámol L-1 phosphate and trace metals and vitamins as in f/2 medium. pH was altered by the addition of HCl.
 

 

0.91

 

 

Langer et al. (2009)

Growth rate of the coccolithophore Emiliania huxleyi (strain code RCC1212) grown under normal and reduced pH conditions. Temperature = 20░C, salinity = 32 psu, 16/8 hour light/dark cycle, light intensity = 400 Ámol photons m-2 s-1, North Sea seawater enriched with 100 Ámol L-1 nitrate, 6.25 Ámol L-1 phosphate and trace metals and vitamins as in f/2 medium. pH was altered by the addition of HCl.
 

 

 

0.64

 

Sciandra et al. (2003)

Net calcification rates (as measured by budgeting the change in total alkalinity) were determined for coccolithophores (Emiliania huxleyi) growing in controlled nitrogen-limiting chambers over a period of 16 days. Reduced pH values were obtained by bubbling CO2 enriched air into the experiment cultures and temperatures were maintained at 17░C.
 

 

0.74

 

 

Sciandra et al. (2003)

Net calcification rates (as measured by budgeting the change in particulate inorganic carbon) were determined for coccolithophores (Emiliania huxleyi) growing in controlled nitrogen-limiting chambers over a period of 16 days. Reduced pH values were obtained by bubbling CO2 enriched air into the experiment cultures and temperatures were maintained at 17░C.
 

 

0.85

 

 


Printer Friendly Version