南极长城湾浮游植物生态的初步研究

A PRELIMINARY STUDY ON THE ECOLOGY OF THE PHYTOPLANKTON IN GREAT WALL BAY,ANTARCTICA

本文利用 1 988年 3月至 1 989年 2月南极长城湾采集的浮游植物样品 ,作鉴定并定量分析。结果表明浮游植物种类组成显示出冷水性和近岸广温性种类为主的生态特点 ;优势种随季节变化而出现演替 ,其细胞数量变化呈夏季高峰的单峰型变化周期 ,各月细胞数量变化取决于该月优势种的演替。浮游植物的分布受诸多环境因子制约 。

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.