Table 5. Number of naturalized species invading each habitat category identified in the five mediterranean-climate regions.
| Habitat type | California | Chile | Med. Basin | South Africa | SW Australia | TOTAL |
| Coastal rocks (Br) | no data | 25 (7) | 20 (5) | 1 (1) | 101 (13) | 173 |
| Coastal sand and shingles (Bs) | 49 (8) | 142 (41) | 98 (24) | 21 (12) | 262 (33) | 440 |
| Coastal wetlands (Bw) | 28 (5) | no data | 43 (10) | 16 (9) | 106 (13) | 176 |
| Inland wetlands (C) | 186 (30) | 212 (61) | 210 (51) | 66 (38) | 512 (65) | 832 |
| Grasslands (E) | 190 (31) | 201 (58) | 176 (43) | 2 (1) | 462 (58) | 721 |
| Short open shrublands (F) | 100 (16) | no data | 21 (5) | 41 (24) | - | 153 |
| Tall thick shrublands (Fm) | no data | 75 (21) | 21 (5) | 45 (26) | 236 (30) | 334 |
| Deciduous and broadleaved forests (G) | 81 (13) | 6 (2) | 33 (8) | 10 (6) | 469 (59) | 542 |
| Coniferous forests (Gc) | 53 (9) | 3 (1) | 24 (6) | – | – | 79 |
| Riparian woodlands and shrublands (Gw) | 140 (23) | 43 (12) | 183 (44) | 112 (64) | 569 (72) | 728 |
| Sparsely vegetated harsh habitats (H) | 31 (5) | 32 (9) | 37 (9) | 3 (2) | 179 (23) | 260 |
| TOTAL | 617 | 349 | 414 | 174 | 791 |
Totals represent the total number of species in each country and in each habitat. Percentages (in brackets) are calculated on the basis of the total number of plants in the last row. Empty cells denote that there are no alien species records but habitat category occurs in the region; dash (–) denotes that the habitat category is absent from the region.
For Australia details are given in Appendix S1 with habitat categories.