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Specific growth rates (d−1) of diatom cultures in natural seawater. Error bars represent ±1 SD of biological triplicate cultures. *P < 0.05 difference from WT (Student’s t test): (A) 2 nM added FeCl3; (B) 0 added Fe; (C) 2 nM added DFOB; (D) 0.17 g/L SRHA; (E) 10% whole BBL seawater; (F) 10% filtered BBL seawater; (G) BBL particles.
