A global analysis of mosses reveals low phylogenetic endemism and highlights the importance of long‐distance dispersal

作者：Katie Kobara Sanbonmatsu, Daniel Spalink · 发表于：Journal of Biogeography · 年份：2022 · DOI：10.1111/jbi.14333 · 被引用次数：20 · 研究领域：Bryophyte Studies and Records、Lichen and fungal ecology、Botany and Plant Ecology Studies

Abstract Aim Digitization of herbarium specimens and DNA sequencing efforts in the past decade have enabled integrative analyses of patterns of diversity and endemism in a phylogenetic context. Here, we compare the best available floristic databases to a comprehensive specimen database to examine spatial patterns of moss phylogenetic assembly. We test the hypotheses that (1) mosses exhibit phylogenetic regionalization, (2) islands contain significantly high phylogenetic diversity and (3) that moss phylogenetic endemism is low on a global scale. Location Global. Taxon Mosses. Methods We developed a phylogeny of 3654 moss species using 25 markers and compiled a global specimen database from online repositories. We calculated floristic and phylogenetic measures of diversity and endemism and performed randomizations to test for significant deviations from expectations. We use rarefaction and extrapolation to alleviate substantial differences in sampling effort across the globe. We used both phylogenetic and floristic methods to test for spatial regionalization. We compare our specimen‐based results to those obtained using a floristic dataset. Results Phylogenetic diversity is more robust to missing data than species richness. Mean phylogenetic distance was significantly higher than expected in areas with high species richness, indicating that reported richness in these areas is likely a product of repeated colonization. Phylogenetic endemism is low globally. Phylogenetic regional...