Aim Geographical, climatic and soil factors are major drivers of plant beta diversity, but their
importance for dryland plant communities is poorly known. The aim of this study was to:(1)
characterize patterns of beta diversity in global drylands;(2) detect common environmental
drivers of beta diversity; and (3) test for thresholds in environmental conditions driving
potential shifts in plant species composition. Location Global. Methods Beta diversity was
quantified in 224 dryland plant communities from 22 geographical regions on all continents …