Fig. 5: Global sea-level change during the last 120 ka (adapted from Rijsdijk et al. 2014). | Heredity

Fig. 5: Global sea-level change during the last 120 ka (adapted from Rijsdijk et al. 2014).

From: A historical stepping-stone path for an island-colonizing cactus across a submerged “bridge” archipelago

Fig. 5

The gray bar represents the 95% Highest Posterior Density (HPD) interval (46 Ka–125 Ka), and the black dot is the mean for the stem age of C. insularis (79 Ka). The dashed line represents the hypothesized sea level threshold (−80 m) associated with the presence or absence of the transient land bridge in the Fernando de Noronha Chain (FNC), as determined by our paleomodeling (Fig. 4) and assuming the same impact along the late Pleistocene. t1, putative period of long-term colonization followed by divergence facing recurrent gene flow; t2, putative period of maximum extension of the transient bridge in the LGM followed by gradual disconnection (Fig. 4); t3, isolation and further differentiation. TMRCA, Time to the Most Recent Common Ancestor.

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