Claim · model-written summary
Long-term directional vegetation changes since the 1870s were identified in southeastern Arizona.
- Taxon
- velvet mesquite
Neltuma velutinae1 - Outcome
- Long-term directional vegetation changese0
- Qualifier
- since the advent of major Anglo-American settlement in the 1870se0
- Setting
- southeastern Arizonae0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorDirectionValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Long-term directional vegetation changes in the wild landscape of southeastern Arizona since the advent of major Anglo-American settlement in the 1870s are identified”
e1“the link between velvet mesquite (Prosopis velutina Woot.) increases and precipitation trends since the turn of the century”
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 single trend is evident in regional precipitation during the period since 1870.
- 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.
- Mechanism Climatic oscillations have resulted in short-term fluctuations in vegetation.