The missing link in biogeographic reconstruction: Accounting for lineage extinction rewrites history
Cite this dataset
Herrera-Alsina, Leonel et al. (2022). The missing link in biogeographic reconstruction: Accounting for lineage extinction rewrites history [Dataset]. Dryad. https://doi.org/10.5061/dryad.34tmpg4p7
In the most widely used family of methods for ancestral range estimation (ARE), dispersal, speciation and extirpation events are estimated from information on extant lineages. However, this approach fails to consider the geographic distribution of extinct species and their position on the phylogenetic tree, an omission that could compromise reconstruction. Here, we present a method that models the geographic distribution of extinct species and we quantify the potential inaccuracy in ancestral range estimation when extinction rates are above zero.
Global applications, with an example from the Americas.
All taxa, with an example from hummingbirds (Amazilia).
Methods capable of explicitly modelling extinct branches along with their reconstructed geographic information (GeoSSE) have been overlooked in ARE analysis, perhaps due to the inherent complexity of implementation. We develop a user-friendly platform, which we term LEMAD (Lineage Extinction Model of Ancestral Distribution) that generalizes the likelihood described in GeoSSE for any number of areas and under several sets of geographic assumptions. We compare LEMAD and extinction-free approaches using extensive simulations under different macroevolutionary scenarios. We apply our method to revisit the historical biogeography of Amazilia hummingbirds.
We find that accounting for the lineages removed from a tree by extinction improves reconstructions of ancestral distributions, especially when rates of vicariant speciation are higher than rates of in situ speciation, and when rates of extinction and range evolution are high. Rates of in situ and vicariant speciation are accurately estimated by LEMAD in all scenarios. North America as the most likely region for the common ancestor of hummingbirds.
Methods that neglect lineage extinction are less likely to accurately reconstruct true biogeographic histories of extant clades. Our findings on an empirical dataset reconcile the Eurasian origin of Amazilia with biogeographic reconstructions when lineage extinction is considered.
Data were collected from McGuire et al. 2014 and Ornelas et al. 2014. Please see the paper for more details.
I include R scripts to run lemad analysis. Please first install R package LEMAD from: https://github.com/leonelhalsina/lemad
Natural Environment Research Council