Claim · model-written summary
Without nitrogen addition, pH did not alter χ.
- Taxon
- Acer saccharum
Acer saccharumt0 - Outcome
- χe0
- Direction
- did not modifye0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“though did not modify χ.”
t0“Acer saccharum”
Title
Evan A Perkowski; David W Frey; Christine L Goodale; et al. Tree Physiology 2025. doi:10.1093/treephys/tpaf119
Other claims from this paper (11)
- Association Greater soil nitrogen availability did not affect net photosynthesis or stomatal conductance rates.
- Association Greater nitrogen availability was associated with increased leaf nitrogen content.
- Association Greater nitrogen availability was associated with higher photosynthetic capacity.
- Association Greater nitrogen availability decreased χ and increased water-use efficiency.
- Association Increasing nitrogen availability steepened the nitrogen–χ and capacity–χ slopes.
- Association Across plots, soil pH had no effect on measured traits.
- Association Without nitrogen addition, greater pH increased Narea–χ and Vcmax–χ slopes.
- Mechanism Acer saccharum maintained photosynthesis across nitrogen availability while using nitrogen less efficiently and water more efficiently.
- Mechanism The pH effect on resource-use tradeoffs appears mediated through soil nitrogen availability.
- Mechanism Elevated nitrogen deposition may stimulate photosynthesis less than expected and reduce water losses.
- Mechanism Increased transpiration could lessen photosynthetic declines expected with nitrogen limitation.