Fig. 5

Microbial source tracking in the Tara Oceans dataset with SNV and species-FEAST. A World map indicating the location of sampling sites. Source tracking estimates for the contribution of different oceans to the B South Pacific (n = 16) and C Indian Oceans (n = 16) are depicted with vertical bars. In each experiment, all stations around the world excluding those from the “sink” ocean are treated as potential sources. Light blue, for example, represents the total contribution of the four stations from the Mediterranean Sea that had samples in the surface layer that were also greater than 20 °C in temperature