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Alien plant species that invade high elevations are generalists: support for the directional ecological filtering hypothesis

Steyn, C.; Greve, M.; Robertson, M.P.; Kalwij, J.M.; le Roux, P.C. (International Association for Vegetation Science, 2017)

Questions: The richness of invasive alien plant species tends to decrease with increasing elevation. This pattern may be due to alien plant species requiring traits allowing survival at high elevations (the Abiotic ...