Does regional species diversity resist biotic invasions?
| Authors: | Qinfeng Guo, Hong Qian, Jian Zhang |
| Year: | 2022 |
| Type: | Scientific Journal |
| Station: | Southern Research Station |
| DOI: | https://doi.org/10.1016/j.pld.2022.09.004 |
| Source: | Plant Diversity |
Abstract
The role of regional species diversity in large-scale species ii,vasions h::s bee,, lai-gely controversial. Onthe c,ne hand, it has been proposed thrlt diversity may facilitate invasion ' "diversity begets diversity")because regions with hi~her di •.'ersity may indicate favorable conditions for many more species. On theother hand, high diversity may indicate high levels of niche occupation, thus making it more difficult fornew species to invade. In the )ast, invasion biologists have evaluated how regional native and exoticrichness are related. Here, we test whether the range si,e of exotic species may be constrained byregional native richness using plant data from three continental regions in the Northern Hemisphere, i.e.,Europe, Eastern Asia, and North America. We found that regional native plant diversity is inverselyrelated to the range size of exotic species. :his result may be due to stronger species interactions such ascompetition in species-rich habitats that limit the establishment and spread of exotic species.