My research focuses on modelling the diversification of species and traits at a macroevolutionary scale. I am particularly interested in how we can use information on the phylogenetic relationships among species to infer how present day biodiversity has arisen over time and ask:
- How and why do lineages and traits diversify?
- What are the consequences of varying tempo and mode of lineage and trait evolution for temporal and spatial patterns of diversity
Recently I have been most occupied with constructing and analysing a global phylogeny of birds to understand avian diversity in space and time. The tree(s) in various forms can be downloaded from birdtree.org.