Claim · model-written summary
No single trend is evident in regional precipitation during the period since 1870.
- Taxon
- velvet mesquite
Neltuma velutinae1 - Outcome
- single trende3
- Qualifier
- in regional precipitation during this periode3
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“the link between velvet mesquite (Prosopis velutina Woot.) increases and precipitation trends since the turn of the century”
e3“no single trend is evident in regional precipitation during this period”
Title
Historic Vegetation Change, Mesquite Increases, and Climate in Southeastern Arizona
Conrad J. Bahre; M. L. Shelton Journal of Biogeography 1993. doi:10.2307/2845722
Other claims from this paper (6)
- Observation No clear evidence shows upward displacement of major vegetation types along a xeric-to-mesic gradient.
- Mechanism Identified long-term vegetation changes appear to be of anthropogenic origin.
- Association Mesquite increases are irregular and show no clear relation to precipitation variations.
- Mechanism Mesquite increases are most likely the result of livestock grazing and/or fire exclusion.
- Observation Long-term directional vegetation changes since the 1870s were identified in southeastern Arizona.
- Mechanism Climatic oscillations have resulted in short-term fluctuations in vegetation.