The complex interplay between chromosome, climatic niche and morphological traits shapes the diversification of Carex (Cyperaceae).

ABSTRACT:

Background and aims

Shifts in lineage diversification rates, shaped by speciation and extinction, are influenced by morphological, ecological and genetic changes. In this study, we investigate the drivers of diversification in Carex, considering chromosome number evolution, bioclimatic variables (temperature and precipitation) and morphological traits (culm and lateral spike unit lengths), along with their evolutionary rates.

Methods

First, we used Bayesian analysis of macroevolutionary mixtures (BAMM) to estimate diversification and trait evolution rates and probabilistic models for chromosome evolution. Phylogenetic path analyses (PPAs) were then used to assess the relative contribution of the predictors to diversification. We tested three different model sets: (1) a set w

SUBMITTER: Valdes-Florido A 

PROVIDER: S-EPMC12933657 | biostudies-literature | 2026 Feb

REPOSITORIES: biostudies-literature