Geography Reference
In-Depth Information
Differentiation of the Northern Tablelands (area B) followed. The Victorian part
of the Great Dividing Range (area E
1
) differentiated from the NSW Tablelands,
whereas the North Coast (area J) differentiated from the coastal and tableland re-
gions to the south. Finally, areas in central and southern NSW differentiated, with
the Blue Mountains and adjacent coast (areas I and K) differentiating from the
central and southern tablelands (areas C and D). This scenario suggests that sev-
eral clades within the “blue ash” had already evolved before these vicariance pro-
cesses occurred, that some taxa that are widespread today may have been histor-
ically widespread but failed to differentiate, and that some taxa dispersed to other
areas.
Figure 5.14
Biogeographic analysis of “blue ash” eucalypts by Ladiges et al. (1992). (a)
Areas of endemism in southeastern Australia analyzed; (b)
E. stenostoma-E. haemostoma
taxon-area cladogram; (c) resolved area cladogram under assumption 1; (d) resolved area
cladogramunderassumption 0;(e)resolvedareacladogramobtained byBrooksparsimony
analysis; (f) resolved area cladogram under assumption 2; (g)
E. stellulata
taxon-area
