极地研究

极地研究 ›› 1997, Vol. 9 ›› Issue (1): 20-29.

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南极夏季普里兹湾邻近海域浮游植物、粒度分级叶绿素a和初级生产力的分布

刘子琳;史君贤;陈忠元;朱根海;宁修仁   

  • 出版日期:1997-03-30 发布日期:1997-03-30

DISTRIBUTIONS OF PHYTOPLANKTON,SIZE FRACTIONATED CHLOROPHYLL A AND PRIMARY PRODUCTIVITY IN PRYDZ BAY AND THE ADJACENT AREA DURING AUSTRAL SUMMER

  • Online:1997-03-30 Published:1997-03-30

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摘要：

１９９１／１９９２年夏季，在南极普里兹湾邻近海域现场观测浮游植物细胞丰度、优势种类组成、颗粒有机碳浓度、粒度分级叶绿素ａ浓度和初级生产力的分布。调查海域现存生物量和初级生产力以及颗粒有机碳浓度分布均具有较明显的时间和空间区域性特征。在普里兹湾邻近北部陆架和测区东部海区现存生物量、初级生产力和颗粒有机碳浓度均较高，西部海区上述生物参数均较低。测区微型和微微型浮游生物代谢生理活性高，能量转换速率快，在现存生物量和生产力中均占较高比重。其对初级生产力的贡献要高于对生物量的贡献。

关键词: 浮游植物,粒度分级,叶绿素a,初级生产力,普里兹湾,南极

Abstract:

Size fractionated chlorophyll a , primary productivity, cell abundance, dominant species of phytoplankton and particulate organic carbon were observed in Prydz Bay and the adjacent area during austral summer of 1991/1992 (the 8th CHINARE). The results showed that there were obvious spatial zonation of above parameters in the studied area. Those were high in Zhongshan Bay, Davis Bay, the east surveyed region, and low in the west region of the surveyed area. The highest concentration of total chlorophyll a occurred in Prydz Bay and the adjacent continental shelf off shore (2.05±1.84mg/m 3). The higher productivity [>1000mgC/(m 2.d)] occurred in Zhongshan Bay and Davis Bay. The concentrations of micro (>20μm), nano with picoplankton (<20μm) contributed to total chlorophyll a were 57.3% and 42.7% separately. The contribution of nano with picoplankton was higher to total productivity (47.3%) than that to total chlorophyll a concentration.