Growth curves.

<p>Growth curves of strain 1–4 (red, green, yellow and blue, respectively) and the mixture (violet) comprising all four clones in equal proportions. Each panel represents one salinity×temperature treatment (Control: Salinity 25, Temperature 20°C; high T: Salinity 25, Temperature 28°C; low S: Salinity 7, Temperature 20°C; high T/low S: Salinity 7, Temperature 28°C). Data points represent the mean of the four replicates; error bars represent standard error of mean. Start concentrations were 6000 cells ml^–1 in all treatments. Biomass units are raw fluorescence data. The experiment was terminated on day 9.