An excerpt from Figure 1 of the study. The data show how SAR324 from different depths cluster into their own groups, or ecotypes. See the paper for more.
(Boeuf, D. et al. Metapangenomics reveals depth-dependent shifts in metabolic potential for the ubiquitous marine bacterial SAR324 lineage. Microbiome. 2021 Aug 13. https://doi.org/10.1186/s40168-021-01119-5)