Fig. 2.

Community growth rates determined as changes in particulate organic carbon (POC, a–c), and the diatom-specific growth measured with changing BSI (d–f), both measured over 2 days at the end of 14 days of growth. g−i depict BSi to POC ratios as an indicator of the relative abundance of diatoms in each treatment. Statistical significance between two treatments (p < 0.05) is shown with a star. p values for nearly significant treatments (p < 0.1) are shown with their respective brackets, and error bars represent standard deviation