A review on the Antarctic ecosystem models published by Japanese scientists and some comments

Some published articles on the Antarctic krill biomass estimates and ecosystem models by Japanese scientists were reviewed. The concept and treatment of Lotka-Volterra type model by Yamanaka(l983) and Nagata(1983) were compared and some future modefications were discussed. While a network model such as developed by Doi(1879) is able to deal with many component in the Antarctic ecosystem simultaneously, it was felt a further review be needed to develope this model.