Intervention effectmodel-written summary

Elevated carbon dioxide significantly increased below ground growth in F2 poplar.

A claim from Adaptation of tree growth to elevated CO2: quantitative trait loci for biomass in Populus · 2007

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Elevated carbon dioxide significantly increased below ground growth in F2 poplar.

Taxon
poplarPopuluse1
Material
F(2)e0
Treatment
e[CO(2)] at 600 microl l(-1)e2
Outcome
below-ground growthe0
Direction
increasee0
Comparator
current day ambient CO(2) (a[CO(2)])e2

Not reportedGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingValueQualifier

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Populus
Populus · Taxon · picture of the genus (one of its species)Christian Fischer · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“In the F(2) generation, both above- and below-ground growth showed a significant increase in e[CO(2)].”

✓ located verbatim in the source · abstract, characters 569–671
e1

“poplar (Populus trichocarpa and Populus deltoides)”

✓ located verbatim in the source · abstract, characters 349–399
e2

“either current day ambient CO(2) (a[CO(2)]) or e[CO(2)] at 600 microl l(-1)”

✓ located verbatim in the source · abstract, characters 435–510

Title

Adaptation of tree growth to elevated CO2: quantitative trait loci for biomass in Populus

Anne M. Rae; Penny J. Tricker; Stephen M. Bunn; et al. New Phytologist 2007. doi:10.1111/j.1469-8137.2007.02091.x

Other claims from this paper (3)

Record rev-e663123e5c2cbb70a1007ee23e9a4efc36a7e8ff985e90feb23c6407e692909c · schema claims-v0.9 · position 2 in the model’s answer

co2 · growth · Populus (poplar)Results differ

19 papers: 18 positive, 1 negative or no effect

17 papers in the same direction as this claim · 1 in the opposite direction

  1. positive
    Elevated CO2 increased standing root biomass across three Populus species by 47–76%.

    Production, turnover and mycorrhizal colonization of root systems of three Populus species grown under elevated CO2 (POPFACE) · 2003

    Same directionCited by this paper

  2. positive
    FACE increased allometric LAI.

    Leaf area dynamics in a closed poplar plantation under free-air carbon dioxide enrichment · 2001

    Same directionCited by this paper

  3. positive
    The authors concluded that elevated CO2 stimulated poplar growth only in the first year.

    Do above‐ground growth dynamics of poplar change with time under CO2enrichment? · 2003

    Same directionCited by this paper

  4. positive
    Elevated CO2 (FACE) stimulated the number of shoots per stool in poplar coppice.

    Elevated CO2 concentration, fertilization and their interaction: growth stimulation in a short-rotation poplar coppice (EUROFACE) · 2005

    Same directionCited by this paper

  5. no effect
    FACE had no reported effect on growth or stem wood density.

    Stem respiration of Populus species in the third year of free‐air CO2 enrichment · 2003

    Opposite direction

  6. positive
    CO2 enrichment increased leaf number, stem length and total leaf area.

    Effects of CO2 Enrichment on Four Poplar Clones. I. Growth and Leaf Anatomy · 1990

    Same direction

  7. positive
    At high fertility, elevated CO2 increased maximum individual leaf size.

    Interacting effects of soil fertility and atmospheric CO2 on leaf area growth and carbon gain physiology in Populus×euramericana (Dode) Guinier · 1995

    Same direction

  8. positive
    Elevated CO2 increased aboveground woody biomass by 15 to 27% after three seasons.

    Free-air CO2 enrichment (FACE) enhances biomass production in a short-rotation poplar plantation · 2003

    Same direction

10 papers more in this group

See all 19 papers →

Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.