Fig. 4
The P concentrations of A. flos-aquae 1249, A. flos-aquae 1171 and A. flos-aquae 1260 in P-depleted (a), +DOPα (b), +DOPβ (c) and +DIP treatments (d). The full and dash lines represent SRP and DOP concentrations, respectively, the solid square, circle and triangle represent the strains of A. flos-aquae 1249, 1171 and 1260, respectively. Error bars represent standard deviation of triplicate samples