TABLE 1

Impact of IDM feeding on plankton populationsa

TABLE 1
  • a The percentage of phytoplankton removed was determined based on Chl a in all experiments, while bacterioplankton, phytoplankton, and zooplankton cell counts were only quantified for the August 2014 experiment. Removal percentages were calculated by subtracting final concentrations in the presence of IDMs from those in the no-IDM control and dividing by the final concentrations in the no-IDM control: a negative value indicates increase. Numbers in parentheses indicate standard deviations. Bacterial cell numbers were equated to total cells counted after DAPI staining, which in Lake Michigan are composed for >99% of bacteria (24). HNFs, heterotrophic nanoflagellates.