A global phylogenetic regionalization of vascular plants reveals a deep split between Gondwanan and Laurasian biotas.

ABSTRACT: Existing global regionalization schemes for plants consider the compositional affinities among biotas, but these have not explicitly considered phylogenetic information. Here, we present for the first time, a phytogeographical delineation of the global vascular flora based on species-level evolutionary relationships. We analysed 8737 820 geographical occurrence records for vascular plants together with a time-calibrated phylogeny including 67 269 species. We constructed a global phylogenetic regionalization by estimating species composition and phylogenetic beta diversity among 200 km × 200 km grid cells across the world. We identified de novo 16 phytogeographical units that are deeply split into two clusters: Laurasian and Gondwanan. Our regionalization broadly matches previous schemes, b

SUBMITTER: Carta A 

PROVIDER: S-EPMC9298788 | biostudies-literature | 2022 Feb

REPOSITORIES: biostudies-literature