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Figure 4 | BMC Evolutionary Biology

Figure 4

From: Temporal diversification of Central American cichlids

Figure 4

Node truncation and stability of γ. Nodes were truncated from the present to the root of the CA Heroine phylogeny in order to assess the stability of γ using our empirically estimated 90 species phylogeny. Because lineage sampling should become more complete towards the root of the phylogeny, truncation of nodes closer to the present should reduce the influence of incomplete lineage sampling on inferences made from γ. Node removal and γ recalculation is depicted temporally based on the last removed node's time-calibration from the CA Heroine chronogram. Importantly, once nodes from the present to 3.5 mybp are removed, γ is clearly not significant in our empirical phylogeny. Therefore, analyses of only the deeper nodes in the CA Heroine phylogeny cannot reject a pattern of pure-birth lineage diversification.

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