Linear relationship between NO3- concentration, salinity, δ15N-NO3- and the natural logarithm of NO3- concentrations in the upper waters near the coastal areas in Transect A, B and C.

Linear relationship between NO3- concentration, salinity, δ15N-NO3- and the natural logarithm of NO3- concentrations in the upper waters near the coastal areas in Transect A, B and C.