Fig. 2

Representation of exotic species in the flora of Punta Arenas city and in 114 other global cities. A) Distribution of the percentage representation of exotic plants in urban floras. B) Ratio of the number of exotic species per native species for different global cities. Data for the latter were obtained from La Sorte et al. [5]; the positions of Punta Arenas and of Santiago are highlighted in comparison to the rest of the cities worldwide. The boxes encompass 50% of the range of data, with the mean as an intermediate horizontal line. The segments include 75% of the range of data