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The relationship between cyanobacteria and environmental factors in the Bering Sea

【标题】The relationship between cyanobacteria and environmental factors in the Bering Sea

【Title】The relationship between cyanobacteria and environmental fac-tors in the Bering Sea

【作者】 肖天; 孙松; 张武昌; 李超伦; 金明明

【Author】 Xiao Tian ; Sun Song ; Zhang Wuchang ; Li Chaolun ; Jin Mingming

【期刊】极地研究

【Journal】

【期刊年份】2002

【卷】13

【期】2

【关键词】 cyanobacteria; biomass; Bering Sea

【Keywords】 cyanobacteria; biomass; Bering Sea

【摘要】During the first Chinese Scientific Expedition to the Arctic in July - September 1999, cyanobacteria in the Bering Sea were measured by epifluorescence microscopy. Cyanobacterial abundance varied from 0 to 7.93 × 10 3 cell/ml and decreased along a northerly directed latitudinal gradient in horizontal distribution. Cyanobacteria did not occur at station Bl - 12 (north of 60 °N). Vertically, high cya-nobacterial abundance appeared in the upper 25 - 50 m and decreased rapidly below 50 m. There were no cyanobacteria at the 150 m. Seawater temperature and NH4 + -N are suggested to affect the distribution of cyanobacteria.

【Abstract】During the first Chinese Scientific Expedition to the Arctic in July - September 1999, cyanobacteria in the Bering Sea were measured by epifluorescence microscopy. Cyanobacterial abundance varied from 0 to 7.93 × 10 3 cell/ml and decreased along a northerly directed latitudinal gradient in horizontal distribution. Cyanobacteria did not occur at station Bl - 12 (north of 60 °N). Vertically, high cya-nobacterial abundance appeared in the upper 25 - 50 m and decreased rapidly below 50 m. There were no cyanobacteria at the 150 m. Seawater temperature and NH4 + -N are suggested to affect the distribution of cyanobacteria.

【基金/项目】

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