FIG. 1.

Dynamics of biotic and abiotic parameters in the Baltic proper in 2003 and 2004. Salinity and concentrations of Chl a and inorganic nutrients (A), cyanobacterial abundance (B), bacterial abundance and temperature (C), and flagellate abundance and bacterial production (D) are shown. Winter time data are not presented. Gray lines indicate dates when isolates and clone libraries were obtained. Values for salinity, Chl a, and nutrients are calculated as averages for samples from 0- and 5-m depths. Cyanobacterial abundance is from integrated samples (0 to 20 m). All other data are from 3-m depth. Error bars indicate standard deviations.