Fig. 4

Lagrangian travel times and other environmental parameters. A Minimum times retained for analyses. In grey, asymmetric times were not the minimum, thus the matrix accounts for the “direction” of currents between stations. B Measures of temperature, salinity, nitrate, phosphate, and silicate extracted from World Ocean Atlas (WOA) for the 35 Tara stations. On the right, colour scales for each parameter. For the world map of Tara stations, see Supplementary Figure S3