Table 3. Examples of native species with large changes in their centre of mass and their absolute occupancy.
Species with large changes in their centre of mass were selected by having the highest product of their absolute change in occupancy probability and the distance that their centre of mass moved. Directions are from zero at grid north. Distance is the distance moved by the centre of mass. Mean occupancy probability and absolute change are taken from Groom (2013). Details of all species are available in Table S1.
| Direction (degrees) |
Distance (km) |
Mean occupancy probability per 4 km2 |
Absolute change |
|
|---|---|---|---|---|
| England, south | ||||
| Cochlearia danica | 40 | 72.4 | 0.153 | 0.156 |
| Oenanthe crocata | 230 | 59.9 | 0.394 | 0.073 |
| Lactuca virosa | 266 | 44.9 | 0.096 | 0.078 |
| Polystichum setiferum | 235 | 46.1 | 0.336 | 0.070 |
| Puccinellia distans | 273 | 51.5 | 0.083 | 0.054 |
| Beta vulgaris | 35 | 46.9 | 0.129 | 0.057 |
| Spergularia marina | 18 | 32.8 | 0.079 | 0.077 |
| Rubus caesius | 70 | 42.8 | 0.295 | 0.052 |
| Hypericum androsaemum | 219 | 17.0 | 0.234 | 0.123 |
| Atriplex littoralis | 342 | 30.2 | 0.063 | 0.066 |
| England, north | ||||
| Lactuca virosa | 324 | 90.1 | 0.103 | 0.064 |
| Acer campestre | 322 | 36.1 | 0.508 | 0.123 |
| Bryonia dioica | 144 | 43.9 | 0.159 | 0.090 |
| Populus nigra | 170 | 26.7 | 0.165 | 0.121 |
| Rosa arvensis | 181 | 26.9 | 0.265 | 0.108 |
| Apium nodiflorum | 163 | 19.7 | 0.280 | 0.146 |
| Carex otrubae | 145 | 19.4 | 0.245 | 0.133 |
| Spergularia marina | 96 | 15.1 | 0.194 | 0.164 |
| Solanum dulcamara | 177 | 13.6 | 0.467 | 0.170 |
| Phragmites australis | 142 | 11.7 | 0.348 | 0.192 |
| Wales | ||||
| Dactylorhiza praetermissa | 78 | 45.0 | 0.169 | 0.097 |
| Comarum palustre | 28 | 29.5 | 0.231 | 0.092 |
| Baldellia ranunculoides | 196 | 71.6 | 0.036 | 0.030 |
| Dactylorhiza maculata | 247 | 10.8 | 0.243 | 0.177 |
| Carex muricata | 107 | 19.8 | 0.177 | 0.093 |
| Ornithopus perpusillus | 171 | 13.5 | 0.174 | 0.122 |
| Vulpia bromoides | 6 | 20.9 | 0.251 | 0.071 |
| Carex otrubae | 196 | 12.0 | 0.252 | 0.122 |
| Erica cinerea | 340 | 12.4 | 0.303 | 0.117 |
| Fumaria bastardii | 150 | 36.5 | 0.111 | 0.037 |
| Scotland | ||||
| Goodyera repens | 6 | 80.0 | 0.040 | 0.035 |
| Rumex longifolius | 31 | 32.4 | 0.146 | 0.056 |
| Anthriscus sylvestris | 334 | 33.9 | 0.416 | 0.051 |
| Rosa caesia | 336 | 14.9 | 0.192 | 0.112 |
| Sonchus asper | 345 | 10.5 | 0.451 | 0.122 |
| Spergularia marina | 60 | 12.0 | 0.144 | 0.097 |
| Dactylorhiza maculata | 321 | 7.4 | 0.436 | 0.150 |
| Lycopus europaeus | 20 | 31.2 | 0.084 | 0.034 |
| Typha latifolia | 353 | 32.3 | 0.092 | 0.030 |
| Pyrola media | 13 | 56.7 | 0.032 | 0.017 |