Population Abundance of Phytoplankton and Bacteria Measured during the JGOFS Equatorial Pacific Process Study

During the fourth cruise (TT012), data were collected at 5 stations along 140 deg W longitude from 17 deg S latitude to the equator. Population abundances of bacteria and phytoplankton were measured on the first and third cruises. Predawn water samples were taken at each station using the CTD rosette water sampler.

The samples were preserved by freezing them in liquid nitrogen. Abundances of bacteria, cyanobacteria (Synechococcus and Prochlorococcus), and chlorophyll-containing nanoplankton were determined from the preserved samples by flow cytometry (FCM) with internal standards of fluorescent beads. The data is public domain and can be retrieved on-line at "usjgofs.whoi.edu/jg/dir/jgofs/" [The information in this summary was derived from the JGOFS World Wide Web pages.]