300, 600 and 900 ppm Increases in the Air's CO2 Concentration:
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Regenerating longleaf pine community typical of early successional longleaf pine savannahs throughout the southeastern United States
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300 ppm
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600 ppm
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900 ppm
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| Number of Results |
5
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| Arithmetic Mean |
42%
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| Standard Error |
9.9%
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Experimental Conditions
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300 ppm
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600 ppm
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900 ppm
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McCormack et al. (2010) |
Total fine root length of identical mini-ecosystems -- each consisting of three longleaf pine (Pinus palustris) seedlings, three wiregrass (Aristida stricta) C4 grass plants, two sand post oak (Quercus margaretta) seedlings, one rattlebox (Croatalaria rotundifolia) C3 perennial herbaceous legume, and one butterfly weed (Asclepias tuberose) herbaceous C3 dicotyledonous perennial -- grown for three years under natural conditions in an outdoor soil bin at the National Soil Dynamics Laboratory in Auburn, Alabama (United States)
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9%
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McCormack et al. (2010) |
Total fungal rhizomorph length of identical mini-ecosystems -- each consisting of three longleaf pine (Pinus palustris) seedlings, three wiregrass (Aristida stricta) C4 grass plants, two sand post oak (Quercus margaretta) seedlings, one rattlebox (Croatalaria rotundifolia) C3 perennial herbaceous legume, and one butterfly weed (Asclepias tuberose) herbaceous C3 dicotyledonous perennial -- grown for three years under natural conditions in an outdoor soil bin at the National Soil Dynamics Laboratory in Auburn, Alabama (United States)
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72%
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McCormack et al. (2010) |
Total number of mycorrhizal root tips of identical mini-ecosystems -- each consisting of three longleaf pine (Pinus palustris) seedlings, three wiregrass (Aristida stricta) C4 grass plants, two sand post oak (Quercus margaretta) seedlings, one rattlebox (Croatalaria rotundifolia) C3 perennial herbaceous legume, and one butterfly weed (Asclepias tuberose) herbaceous C3 dicotyledonous perennial -- grown for three years under natural conditions in an outdoor soil bin at the National Soil Dynamics Laboratory in Auburn, Alabama (United States)
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29%
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|
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Runion et al. (2006) |
Aboveground biomass of plants grown for three years in outdoor soil bins (2 m deep, 6 m wide, 76 m long) containing soil from a longleaf pine area and supplied with natural rainfall
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59%
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Runion et al. (2006) |
Belowground biomass of plants grown for three years in outdoor soil bins (2 m deep, 6 m wide, 76 m long) containing soil from a longleaf pine area and supplied with natural rainfall
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41%
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