Growth Relative to Growth at Current pH

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Ross sea phytoplankton assemblage []

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
 
 
4
 
 
Arithmetic Mean
 
 
1.05
 
 
Standard Error
 
 
0.03
 
 

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

Tortell et al. (2008)

Relative growth rates of Ross Sea phytoplankton assemblages, dominated by mono specific blooms of the prymnesiophyte alga Phaeocystis antarctica, were determined from experiments conducted in summer (January) at ambient (380 ppm) and elevated (800 ppm) CO2 concentrations after a period of 10 to 18 days. Experimental temperatures varied within 1 degree of 0°C, light intensity was ~30 percent of surface irradiance values, and 1 nM Fe (as FeCl3) was added to the experimental solution to promote phytoplankton growth. Enriched CO2 values were obtained by bubbling CO2 enriched air into the experiment tanks.
 

 

1.10

 

 

Tortell et al. (2008)

Relative growth rates of Ross Sea phytoplankton assemblages, dominated by mono specific blooms of the prymnesiophyte alga Phaeocystis antarctica, were determined from experiments conducted in summer (January) at ambient (380 ppm) and elevated (800 ppm) CO2 concentrations after a period of 10 to 18 days. Experimental temperatures varied within 1 degree of 0°C, light intensity was ~30 percent of surface irradiance values, and 1 nM Fe (as FeCl3) was added to the experimental solution to promote phytoplankton growth. Enriched CO2 values were obtained by bubbling CO2 enriched air into the experiment tanks.
 

 

0.98

 

 

Tortell et al. (2008)

Relative net primary productivity of Ross Sea phytoplankton assemblages, dominated by mono specific blooms of the prymnesiophyte alga Phaeocystis antarctica, were determined from experiments conducted in Spring (November/December) at ambient (380 ppm) and elevated (800 ppm) CO2 concentrations after a period of 10 to 18 days. Experimental temperatures varied within 1 degree of 0°C, light intensity was ~30 percent of surface irradiance values, and 1 nM Fe (as FeCl3) was added to the experimental solution to promote phytoplankton growth. Enriched CO2 values were obtained by bubbling CO2 enriched air into the experiment tanks.
 

 

1.11

 

 

Tortell et al. (2008)

Relative net primary productivity of Ross Sea phytoplankton assemblages, dominated by mono specific blooms of the prymnesiophyte alga Phaeocystis antarctica, were determined from experiments conducted in Spring (November/December) at ambient (380 ppm) and elevated (800 ppm) CO2 concentrations after a period of 10 to 18 days. Experimental temperatures varied within 1 degree of 0°C, light intensity was ~30 percent of surface irradiance values, and 1 nM Fe (as FeCl3) was added to the experimental solution to promote phytoplankton growth. Enriched CO2 values were obtained by bubbling CO2 enriched air into the experiment tanks.
 

 

0.99

 

 


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