Table 1 Comparison of the strength of isolation by distance within regions roughly corresponding to the western (n=124 individuals), central (n=355 individuals) and eastern (n=65 individuals) portions of the island (see Supplementary Figure S4)

From: Partial support for the central–marginal hypothesis within a population: reduced genetic diversity but not increased differentiation at the range edge of an island endemic bird

Region

Intercept

Slope

Western

−0.037 (−0.092 to 0.018)

0.005 (0.000 to 0.010)

Central

−0.031 (−0.058 to −0.004)

0.003 (0.000 to 0.006)

Eastern

−0.040 (−0.124 to 0.045)

0.007 (−0.001 to 0.015)

  1. The parameter estimates (with 95% confidence intervals in parentheses) are jackknifed estimates of the intercept and slope for regressions between pairwise individual genetic distance (Rousset’s a) and ln-transformed geographic distance. The confidence intervals for these estimates overlap one another, and hence we have no evidence that the strength of isolation by distance varies spatially across the island.
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