Claim · model-written summary
Greater soil nitrogen availability did not affect net photosynthesis or stomatal conductance rates.
- Taxon
- Acer saccharum
Acer saccharumt0 - Treatment
- Increasing soil nitrogen availabilitye0
- Outcome
- net photosynthesis (Anet) or stomatal conductance (gs) ratese0
- Direction
- did not affecte0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing soil nitrogen availability did not affect net photosynthesis (Anet) or stomatal conductance (gs) rates”
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 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.
- Association Without nitrogen addition, pH did not alter χ.
- 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.