Percent Dry Weight (Biomass) Increases for
300, 600 and 900 ppm Increases in the Air's CO2 Concentration:


For a more detailed description of this table, click here.

Amaranthus retroflexus L. [Redroot Amaranth]


Statistics
 
300 ppm
600 ppm
900 ppm
 Number of Results
17
 
2
 Arithmetic Mean
6.4%
 
-5%
 Standard Error
3.3%
 
4.9%

Individual Experiment Results

Journal References

Experimental Conditions
300 ppm
600 ppm
900 ppm

Bazzaz et al. (1989)

pots (7.5-cm x 7.5-cm)
28%

 

 

Bazzaz and Carlson (1984)

tubs (10.7 liters, 24 plants), water-stressed
5%

 

2%

Bazzaz and Carlson (1984)

tubs (10.7 liters, 24 plants), well-watered
-12%

 

-12%

Bazzaz and Garbutt (1988)

pots (13-cm diameter, 16 plants)
0%

 

 

Dippery et al. (1995)

controlled growth chambers, leaves
-8%

 

 

Dippery et al. (1995)

controlled growth chambers, stem
3%

 

 

Dippery et al. (1995)

controlled growth chambers, roots
8%

 

 

Dippery et al. (1995)

controlled growth chambers, reproductive biomass
-15%

 

 

Morse and Bazzaz (1994)

environmental growth chambers, 18 C
3%

 

 

Morse and Bazzaz (1994)

environmental growth chambers, 28 C
21%

 

 

Morse and Bazzaz (1994)

environmental growth chambers, 38 C
-6%

 

 

Valerio et al. (2011)

Well watered and fertilized plants grown from seed to anthesis, four to each7.5-L pot filled with a 1:1 mix of perlite and jiffy mix, within controlled-environment chambers
6%

 

 

Zangerl and Bazzaz (1984)

pots (7 liters, 36 plants)
0%

 

 

Ziska (2003)

Plants grown from seed to maturity in the field, distributed among similarly-grown sorghum plants, and enclosed by open-top chambers
34%

 

 

Ziska et al. (1999)

Plants grown to maturity in glasshouses
0%

 

 

Ziska and Bunce (1997)

glasshouse
24%

 

 

Ziska and Bunce (1999)

Plants grown in controlled environment chambers for three weeks
18%

 

 

Printer Friendly Version