ArticleScience advances2026
Marine population-genetic inferences reveal stronger oceanic structure in protists than Archaeplastida (plants) and Metazoa (animals).
Article in Science advances, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
1 citing paper in PubMed.
- Quaternary Ice Ages Shaped Protists Phylogeography: The Case of Arcellinida in the Iberian Peninsula.Molecular ecology · 2026Article
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6 authors.
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Abstract
While the biogeographic patterns of animals and plants are well defined, the distribution of the microbial eukaryotic world remains contentious. Classically, protists were assumed to be cosmopolitan, dispersing everywhere with little geographic constraint. We tested this hypothesis by compiling 88 marine cytochrome oxidase subunit I metabarcoding studies to perform a global population-genetic analysis. We uncovered a fundamental biogeographic divide: most animal (Metazoa) and plant (Archaeplastida) phyla have haplotype diversity that is strictly concentrated within specific ocean basins, while most protist phyla share identical haplotypes across multiple, distant oceans. The combination of large geographic ranges with moderate among-ocean genetic differentiation in protists is inconsistent with strict historical cosmopolitanism and is compatible with high connectivity and range expansion dynamics, including, but not limited to, recent colonization events. Our findings provide a unified population-genetic perspective on marine eukaryotic biogeography and refine current views of microbial dispersal at ocean-basin scales.
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