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Bacterial productivity in the Prydz Bay and its adjacent waters, Antarctic

【标题】Bacterial productivity in the Prydz Bay and its adjacent waters, Antarctic

【Title】Bacterial productivity in the Prydz Bay and its adjacent waters, Antarctic

【作者】 邱雨生; 黄奕普; 陈敏; 刘广山

【Author】 Qiu Yusheng ; Huang Yipu ; Chen Min ; Liu Guangshan

【期刊】极地研究

【Journal】

【期刊年份】2004

【卷】15

【期】

【关键词】 the Prydz Bay; Antarctic; bacterial productivity; 3 H-thymidine

【Keywords】 the Prydz Bay; Antarctic; bacterial productivity; 3 H-thymidine

【摘要】Bacterial productivity was measured using 3 H-thymidine methods in the Prydz Bay and its adjacent waters in the Southern Ocean during the 16th National Antarctic Research Expedition of China (CHINARE). The results showed that bacterial productivity in our study areas ranged from 4.5 to 191 ngC·dm -3 ·h -1 , with an average of 50.4 ngC·dm -3 ·h -1 . These values were comparable to those reported for the Ross Sea. The mean ratio of bacterial productivity to primary productivity in our study areas was 41%. The general characteristics in the vertical profiles showed a subsurface maximum at most of the stations, which was also consistent with those observed in the other sea areas in the Southern Ocean. The spatial distribution of bacterial productivity and dissolved organic carbon in the surface waters showed that their variations were inversely correlative. The relationship among bacterial productivity, primary productivity and dissolved organic carbon suggested that bacterial productivity in the Prydz Bay and its adjacent water was influenced mostly by phytoplankton activities and the hydrologic conditions.

【Abstract】Bacterial productivity was measured using 3 H-thymidine methods in the Prydz Bay and its adjacent waters in the Southern Ocean during the 16th National Antarctic Research Expedition of China (CHINARE). The results showed that bacterial productivity in our study areas ranged from 4.5 to 191 ngC·dm -3 ·h -1 , with an average of 50.4 ngC·dm -3 ·h -1 . These values were comparable to those reported for the Ross Sea. The mean ratio of bacterial productivity to primary productivity in our study areas was 41%. The general characteristics in the vertical profiles showed a subsurface maximum at most of the stations, which was also consistent with those observed in the other sea areas in the Southern Ocean. The spatial distribution of bacterial productivity and dissolved organic carbon in the surface waters showed that their variations were inversely correlative. The relationship among bacterial productivity, primary productivity and dissolved organic carbon suggested that bacterial productivity in the Prydz Bay and its adjacent water was influenced mostly by phytoplankton activities and the hydrologic conditions.

【基金/项目】

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