Preliminary studies on the kinetics of utilization of acetate by bacterioplankton in Mikołajskie Lake.

The kinetics of the utilization of acetate by bacterioplankton in natural waters was measured according to a modification of the method of Wright and Hobbie (1965, 1966) which enabled investigations in natural conditions in the open. A number of measurements made with this method allowed the determination of the natural concentration of the substrate in lake water and potential maximal rate and time of utilization of the substrate by bacterioplankton. Measurements were made in different zones and at various depths in Mikołajskie Lake in July, August and Septemper of 1974.