Table 4. Summary of statistically significant relationships between methanol uptake and biogeochemical variables.

Methanol uptake	Primary production	Chlorophyll a	Synechococcus sp.	Prochlorococcus sp.	Nanophytoplankton
Mauritanian upwelling (D338)	0.611**	0.610**	NS	NA	0.381*
Open Ocean (AMT19)	0.676**	NS	0.518**	0.611**	NS

Abbreviation: NS, not significant; *P⩾0.05; **P⩽0.001; NA, not applicable because the upwelling did not have any Prochlorococcus cells.