Why aren’t globally successful, weedy plant species generally found at high altitudes? This study suggests that it’s due to extreme abiotic conditions in association with the alien species’ life history traits, not a lack of opportunity.
Rundel, P.W., and J.E. Keeley. 2016. Dispersal limitation does not control high elevation distribution of alien plant species in southern Sierra Nevada, CA. Natural Areas Journal 36: 277-287. DOI: http://dx.doi.org/10.3375/043.036.0308