Origins of the Macaronesian flora: Dispersal and diversification shape a meta‐archipelago

作者：Jonathan P. Price, Carlos García‐Verdugo, María M. Romeiras, Rüdiger Otto, Juli Caujapé‐Castells, Miguel Menezes de Sequeira, José María Fernández‐Palacios · 发表于：American Journal of Botany · 年份：2026 · DOI：10.1002/ajb2.70161 · 被引用次数：1 · 研究领域：Plant Diversity and Evolution、Botany and Geology in Latin America and Caribbean、Species Distribution and Climate Change

PREMISE: Ancestors of oceanic insular floras arrived via long-distance dispersal as a function of the geographic location, climatic habitats, and geologic age of the island. As a result, these floras comprise a mix of lineages, derived from distinct colonization events with different continental and insular origins. METHODS: We assembled distributional data for native plant species in four Macaronesian archipelagoes (Azores, Madeira, Canary Islands, and Cabo Verde). Drawing from phylogenetic studies, we assigned each endemic species to a lineage. Five regions represent where the closest relatives of these lineages occur: American, temperate northern Europe, Mediterranean, Saharan, and African. We then estimated the total number of colonization events to Macaronesia as a whole and each constituent archipelago deriving from each region. RESULTS: The distribution of the origins of native non-endemic lineages broadly reflects the range of climates available in a given archipelago, such that a habitat filter model best explains their distributions. In contrast, for endemic lineages, combinations involving the Mediterranean region predominate across all four archipelagoes. The most species-rich lineages most commonly originate in the Canaries and subsequently disperse to younger, more isolated archipelagoes, reflecting a progression rule pattern. CONCLUSIONS: Different theoretical models apply depending on the scale of endemism. One pattern that transcended existing models involved...