Claim · model-written summary
Elevated carbon dioxide combined with fertilization increased ca minus ci by 60%.
- Taxon
- Norway spruce
Picea abiese2 - Treatment
- elevated [CO2]e1
- Outcome
- (ca - ci)e0
- Direction
- increasede0
- Value
- 60%e0
- Qualifier
- combined with fertilizatione0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSetting
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“when combined with fertilization, it increased (ca - ci) by 60%”
e1“elevated [CO2] alone increased (ca - ci) by 38%”
e2“Norway spruce (Picea abies (L.) Karst.) trees”
Title
J. D. Marshall; S. Linder Tree Physiology 2013. doi:10.1093/treephys/tpt004
Other claims from this paper (6)
- Observation Older leaf cohorts contained current photosynthate.
- Observation Tree rings lacked the leaf carbon contamination.
- Method / resource Tree rings integrated over canopy and growing season better than leaves.
- Intervention effect Elevated carbon dioxide alone increased ca minus ci by 38% in treatment years two and three.
- Association Inferred ca minus ci depended on carbon dioxide and mineral nutrient status.
- Mechanism The ca minus ci differences were sufficient to account for increased wood volume production.