Metabolism Relative to Metabolism at Current pH

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Bull Kelp [Nereocystis luetkeana]

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
 
 
8
 
2
Arithmetic Mean
 
 
1.21
 
1.51
Standard Error
 
 
0.1
 
0.15

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

Swanson and Fox (2007)

Phlorotannin levels of Bull kelp (Nereocystis luetkeana) growing for 55 days was determined under low pH (~7.58) and low UVB (0.25 Wm-2) conditions during the juvenile to late-juvenile stage. Tank temperatures ranged from 11 to 15蚓 and salinity ranged from 31.2 to 32 ppt. Reduced pH values were obtained by bubbling CO2 enriched air into the experiment tanks.
 

 

 

 

1.30

Swanson and Fox (2007)

Phlorotannin levels of Bull kelp (Nereocystis luetkeana) growing for 55 days was determined under normal pH (~8.09) and low UVB (0.08 Wm-2) conditions during the juvenile to late-juvenile stage. Tank temperatures ranged from 11 to 15蚓 and salinity ranged from 31.2 to 32 ppt. Reduced pH values were obtained by bubbling CO2 enriched air into the experiment tanks.
 

 

 

 

1.71

Thom (1996)

Net apparent productivity of Bull Kelp (Nereocystis luetkeana) was determined for plants growing at 2 times the ambient CO2 concentration over a period of 2 hours. Tank temperatures ranged from 13 to 16蚓 and photosynthesis was light saturated (>350 然-2s-1). Enriched CO2 values were obtained by bubbling CO2 enriched air into the experiment tanks.
 

 

0.95

 

 

Thom (1996)

Net apparent productivity of Bull Kelp (Nereocystis luetkeana) was determined for plants growing at 2 times the ambient CO2 concentration over a period of 2 hours. Tank temperatures ranged from 13 to 16蚓 and photosynthesis was light saturated (>350 然-2s-1). Enriched CO2 values were obtained by bubbling CO2 enriched air into the experiment tanks.
 

 

1.16

 

 

Thom (1996)

Net apparent productivity of Bull Kelp (Nereocystis luetkeana) was determined for plants growing at 1.25 times the ambient CO2 concentration over a period of 2 hours. Tank temperatures ranged from 13 to 16蚓 and photosynthesis was light saturated (>350 然-2s-1). Enriched CO2 values were obtained by bubbling CO2 enriched air into the experiment tanks.
 

 

1.18

 

 

Thom (1996)

Net apparent productivity of Bull Kelp (Nereocystis luetkeana) was determined for plants growing at 1.5 times the ambient CO2 concentration over a period of 2 hours. Tank temperatures ranged from 13 to 16蚓 and photosynthesis was light saturated (>350 然-2s-1). Enriched CO2 values were obtained by bubbling CO2 enriched air into the experiment tanks.
 

 

1.11

 

 

Thom (1996)

Net apparent productivity of Bull Kelp (Nereocystis luetkeana) was determined for plants growing at 2 times the ambient CO2 concentration over a period of 2 hours. Tank temperatures ranged from 13 to 16蚓 and photosynthesis was light saturated (>350 然-2s-1). Enriched CO2 values were obtained by bubbling CO2 enriched air into the experiment tanks.
 

 

1.43

 

 

Thom (1996)

Net apparent productivity of Bull Kelp (Nereocystis luetkeana) was determined for plants growing at 2.5 times the ambient CO2 concentration over a period of 2 hours. Tank temperatures ranged from 13 to 16蚓 and photosynthesis was light saturated (>350 然-2s-1). Enriched CO2 values were obtained by bubbling CO2 enriched air into the experiment tanks.
 

 

1.56

 

 

Thom (1996)

Net apparent productivity of Bull Kelp (Nereocystis luetkeana) was determined for plants growing at 4 times the ambient CO2 concentration over a period of 2 hours. Tank temperatures ranged from 13 to 16蚓 and photosynthesis was light saturated (>350 然-2s-1). Enriched CO2 values were obtained by bubbling CO2 enriched air into the experiment tanks.
 

 

1.60

 

 

Thom (1996)

Net apparent productivity of Bull Kelp (Nereocystis luetkeana) was determined for plants growing at 5 times the ambient CO2 concentration over a period of 2 hours. Tank temperatures ranged from 13 to 16蚓 and photosynthesis was light saturated (>350 然-2s-1). Enriched CO2 values were obtained by bubbling CO2 enriched air into the experiment tanks.
 

 

0.69

 

 


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