Claim · model-written summary
Leaf and stem water potentials decreased in September compared with August
- Taxon
- tall conifer speciest0
- Outcome
- leaf and stem water potentialse3
- Direction
- decreasese3
- Comparator
- August valuese3
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentSettingValueQualifier
Verbatim
t0“native embolism in upper branches of four tall conifer species”
e3“The September recovery occurred despite decreases in the leaf and stem water potentials compared to August values”
Title
An annual pattern of native embolism in upper branches of four tall conifer species
Katherine A. McCulloh; Daniel M. Johnson; Frederick C. Meinzer; et al. American Journal of Botany 2011. doi:10.3732/ajb.1000503
Other claims from this paper (8)
- Intervention effect Freeze-thaw cycles resulted in considerable native PLC in upper branches of tall conifers
- Observation Upper branches showed hydraulic recovery in spring
- Intervention effect A moderate increase in native embolism was observed after an unusually hot period in August
- Observation The September recovery occurred despite decreases in leaf and stem water potentials
- Mechanism Branch recoveries must have occurred through water absorption through needles and/or refilling under negative pressure rather than by transport from roots
- Association Native embolism values correlated strongly with air temperature of the preceding 10 d, excluding August
- Association Branches with lower wood density had higher specific conductivity than branches with higher wood density in three species
- Association Branches with lower wood density did not have greater native PLC than branches with higher wood density in three species