@article{oai:nipr.repo.nii.ac.jp:00006222, author = {Odate, Tsuneo and Hirawake, Toru and Fukuchi, Mitsuo}, journal = {Polar bioscience}, month = {Jan}, note = {P(論文), A surface seawater monitoring system was used aboard the Shirase to estimate phytoplankton abundance while the icebreaker was anchored in an ice covered area off Syowa Station during the austral summer of 1996/97. A significant positive relationship was observed between the digital output (OP) values of the chlorophyll fluorometer of the system, and chlorophyll a (Chl a) concentrations of the seawater that passed through the system. Using this relationship, OP values were converted into Chl a (Chl a OP). Throughout the present study, the Chl a OP was found to be consistent with temporal changes in Chl a observed in the field near the Shirase, with high Chl a OP values measured in relatively warm and less saline water. These findings suggest that the high Chl a may be derived from the ice-edge phytoplankton blooms that develop in stable waters associated with melting ice. Relatively simple operation without need for complicated maintenance procedures facilitates the ease with which the system can be used. The operation of the system every summer may facilitate the acquisition of data that reveal the long-term variability of phytoplankton biomass under fast ice.}, pages = {28--34}, title = {A simple method for estimating phytoplankton abundance using a surface seawater monitoring system off Syowa Station during austral summer}, volume = {18}, year = {2005} }