Abstract:

This paper presents the identification and quantitative analysis of thephytoplankton samples collected during the comprehensive investigation ofmarine organisms in the Great Wall Bay, Antarctica from the period of March1988 to February 1989. The results indicated that the species composition ofthe phytoplankton showed the ecological characteristics of the maincold-water and near-shore eurythermal species; the dominant species showedalternation with seasonal variation, the variation of their cell numbershowed the period of single-peak variation, the peak being in the summer andthe variation of cell number in each month depended upon the alternation ofthe dominant species in that month.The distribution of the phytoplankton isrestricted by a number of environmental factors, the number of hours of daylength being the dominant factor.