Abstract
Chl α, protein, RNA and DNA were measured in 400 samples taken from the surface down to 5, 000m at 27 oceanographical stations in the North Pacific Ocean. Two section diagrams of these cellular constituents were given along 155°E and 155°W meridians, and several vertical profiles of the four constituents were also given at some stations near Japan. The average concentration ranges of Chl α, protein, RNA and DNA obtained in this study area were 0.025-0.862, 11.4-88.1, 1.36-35.3 and 0.13-5.24μg/l, respectively. Chl α was distributed mostly in the photic zone as we would expect. However protein, RNA were in high concentrations within the photic zone and sometimes extremely high concentrations in the deep aphotic zone.
