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Questions
Shrub expansion into alpine ecosystems worldwide raises important questions regarding the influence of shrub encroachment on alpine species diversity. The stress gradient hypothesis (SGH) predicts interactions will be competitive when resources are plentiful and the environment is benign, but that facilitative interactions will dominate when conditions are stressful. We asked how Artemisia rothrockii...
QuestionHave there been shifts in abundance and distribution of alpine and sub‐alpine plant species along an elevational gradient in an arid North American mountain range during the last half‐century?
LocationElevational gradient in the White Mountains, California, USA (37°30′ N, 118°10′ W).
MethodsWe conducted a 49‐yr re‐survey of plant species distribution and abundance in areas originally surveyed...
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