Flow Cytometry and Microbiology Plankton analysis by flow cytometry. All analyses were done with a Becton-Dickinson FacScan flow cytometer. Forward light scatter is primarily related to cell size. A mixture of six phytoplankton cultures that were used for a bivalve grazing study at the Bigelow Laboratory. All particles greater than 1 um in a water sample from the York River in Virginia.
Colored dots represent the different populations of phytoplankton cells.
Continental shelf All particles greater than 1 um in a sample from Georges Bank. All particles greater than 0. 5 um in a sample from the Sargasso Sea, north of Bermuda.