Relationships between Tertiary relict and circumboreal woodland floras: a case study in Chimaphila (Ericaceae).

ABSTRACT:

Background and aims

Tertiary relict and Arctic/circumboreal distributions are two major patterns of Northern Hemisphere intercontinental disjunctions with very different histories. Each has been well researched, but members of one biome have generally not been incorporated in the biogeographical analyses of the other, and links or transitions between these two biomes have rarely been addressed.

Methods

Phylogenies of Chimaphila were generated based on cpDNA and nuclear ITS, using Bayesian and maximum likelihood methods. A time-calibrated phylogeny was generated using BEAST. Ancestral area reconstruction was inferred using both statistical dispersal-vicariance analysis and a dispersal-extinction-cladogenesis model.

Key results

The Chimaphila crown group was estimated t

SUBMITTER: Liu ZW 

PROVIDER: S-EPMC6589512 | biostudies-literature | 2019 Jun

REPOSITORIES: biostudies-literature