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Download filePhylogenetic Inference of Reciprocal Eects between Geographic Range Evolution and Diversication
journal contribution
posted on 20.09.2012, 00:00 authored by Emma E. Goldberg, Lesley L. Lancaster, Richard H. ReeGeographic characters|traits relating to the spatial distribution of a species|
may both aect and be aected by processes associated with lineage birth and death. This
is potentially confounding to comparative analyses of species distributions because current
models do not allow reciprocal interactions between the evolution of ranges and the growth
of phylogenetic trees. Here we introduce a likelihood-based approach to estimating regiondependent
rates of speciation, extinction, and range evolution from a phylogeny, using a
new model in which these processes are interdependent. We demonstrate the method with
simulation tests that accurately recover parameters relating to the mode of speciation and
source-sink dynamics. We then apply it to the evolution of habitat occupancy in Californian
plant communities, where we nd higher rates of speciation in chaparral than in forests and
evidence for expanding habitat tolerances.