Fig. 4
From: Ambient nitrate switches the ammonium consumption pathway in the euphotic ocean
Nitrification rates versus NO3− concentrations in the upper 200 m of different ocean provinces. Data of Subarctic Pacific, North Pacific gyre, and Equatorial Pacific are from ref.6; BATs from ref. 10; HOTs from ref. 4; ETSP from ref. 67; ETNP from ref. 66; Southern Ocean from ref.69; California Current from ref. 24; Hood Canal from ref. 25; South China Sea and Northwest Pacific from this study
