Table 3 Estimates of historical gene dispersal (σg) in four Alcantarea inselberg species, including population density (D) estimated from geographical data and maps, maximum sampling distance and σg estimated for three different effective densities (De) over the whole distance range or using the iterative procedure as described in text
Species | Population | Number of pairs | D (individuals per km2) | Maximum sampling distance (m) | σg estimate from De=0.1 D | σg estimate from De=0.2 D | σg estimate from De=0.5 D | |||
|---|---|---|---|---|---|---|---|---|---|---|
Whole range | Iterative a | Whole range | Iterative a | Whole range | Iterative a | |||||
A. geniculata | GRC | 496 | 15 070 | 89.2 | 38.3 | No conv | 27.1 | 28.1 | 17.1 | 22.7 |
A. imperialis | IMC | 1540 | 56 000 | 217.2 | 32.9 | 22.9 | 23.3 | 16.0 | 14.7 | 11.0 |
IMC green | 253 | 56 000 | 194.7 | 15.6 | 13.9 | 11.1 | 10.0 | 7.0 | 8.1 | |
IMC red | 435 | 217.2 | ||||||||
IJF | 325 | 49.9 | ||||||||
A. regina | RP1 | 325 | 17 930 | 90.7 | 38.5 | No conv | 27.2 | No conv | 17.2 | 15.3 |
RP2 | 153 | 33.3 | ||||||||
A. glaziouana | LPI | 351 | 203.9 | |||||||
LPP | 435 | 500 000 | 994.2 | 8.7 | 6.4 | 6.1 | No conv | 3.9 | No conv | |
LNI | 136 | 20 730 | 63.6 | 16.7 | 14.0 | 11.8 | 10.9 | 7.5 | 6.5 | |
LPA West | 55 | 60 000 | 30.4 | 3.7 | 3.3 | 2.6 | 2.6 | 1.7 | 1.6 | |
LPA East | 91 | 60 000 | 51.9 | 11.1 | 10.6 | 7.8 | 10.6 | 4.9 | 4.7 | |
