Eukaryotic plankton are a core component of marine ecosystems with exceptional taxonomic
and ecological diversity, yet how their ecology interacts with the environment to drive global
distribution patterns is poorly understood. In this work, we use Tara Oceans metabarcoding
data, which cover all major ocean basins, combined with a probabilistic model of taxon co-
occurrence to compare the biogeography of 70 major groups of eukaryotic plankton. We
uncover two main axes of biogeographic variation. First, more-diverse groups display …

Eukaryotic plankton are a core component of marine ecosystems with exceptional taxonomic
and ecological diversity. Yet how their ecology interacts with the environment to drive global
distribution patterns is poorly understood. Here, we use Tara Oceans metabarcoding data
covering all the major ocean basins combined with a probabilistic model of taxon co-
occurrence to compare the biogeography of 70 major groups of eukaryotic plankton. We
uncover two main axes of biogeographic variation. First, more diverse groups display …