119
Fig. 7.1 Nitrate (a, μM), phosphate (b, μM) and Fe (c, nM) concentrations in the world’s surface
oceans. NO 3
- and PO 4
-3 from the World Ocean Atlas 2013 (NOAA NCEI Live Access Server 8) and
Fe from Toulza et al. (2012) with permission
7.1 Factors Controlling the Distribution of N 2 Fixation Biogeography
Fig. 7.1 Nitrate (a, μM), phosphate (b, μM) and Fe (c, nM) concentrations in the world’s surface
oceans. NO 3
- and PO 4
-3 from the World Ocean Atlas 2013 (NOAA NCEI Live Access Server 8) and
Fe from Toulza et al. (2012) with permission
7.1 Factors Controlling the Distribution of N 2 Fixation Biogeography