Claim · model-written summary
Leaf and stem δ15N were positively related in non-encroachers.
Not reportedGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingValueQualifier
Verbatim
e0“positive relationship in non-encroachers”
e1“leaf and stem δ¹⁵N were unrelated, in contrast to the positive relationship in non-encroachers”
t0“African savanna trees”
Title
N2 fixation is linked to the ability to encroach in African savanna trees
Telford, E.M.; Simpson, K.; Street, L.; et al. White Rose Research Online (University of Leeds, The University of Sheffield, University of York) 2026
Other claims from this paper (7)
- Observation Encroachers had lower leaf δ15N than non-encroachers.
- Observation Nodule mass fraction, stem δ15N and percentage of N from fixation were similar across encroachers and non-encroachers.
- Intervention effect Plants fixed more N2 under elevated CO2.
- Intervention effect Plants fixed more N2 under well-watered conditions.
- Association Leaf and stem δ15N were unrelated in encroachers.
- Mechanism Authors interpret N2 fixation as enabling encroachers to meet immediate nitrogen demands under water limitation and increasing CO2.
- Mechanism Authors propose that elevated CO2 enhances photosynthesis and carbon allocation for N2 fixation, helping explain encroachment.