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Phytoplankton chlorophyll stocks in the Antarctic Ocean

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摘要

Phytoplankton chlorophyll stocks in the Indian sector of the Antarctic Ocean were estimated on the basis of published data collected from nine cruises of the Icebreaker,Fujiin 1965–1976, during routine observations of the Japanese Antarctic Research Expedition (JARE). Surface chlorophyllaconcentration, measured at 631 stations in waters south of 35°S, ranged from 0.01 to 3.01 mg m−3, At about half of the stations the values were less than 0.24 mg and at only 29 stations were high values more than 1.00 mg m−3recorded. The levels of surface chlorophyllastocks were estimated in three groups; (1) data obtained on the southward leg through the eastern Indian sector (middle-late December), (2) those on the northward leg through the western Indian sector (late February–early March) and (3) those on the northward leg through the eastern Atlantic sector (late February–early March). Furthermore, mean values and standard deviations were calculated for each of six different water masses from north to south,i. e., subtropical water between 35°S and the Subtropical Convergence (STC) zone, water within the STC zone, Subantarctic Upper Water, water within the Antarctic Convergence (AC) zone, Antarctic Surface Water between the AC zone and 63°S, and Antarctic Surface Water south of 63°S. Mean values of surface chlorophyllaconcentrations for each of the six water masses on the three legs ranged from 0.15 to 0.58 mg m−3and were comparable to those reported by other workers previously. Seasonal periodicity of phytoplankton chlorophyll stock is discussed. The surface chlorophyll stock in the oceanic water of the Antarctic Ocean does not seem to be so high as prev

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  • 来源
    《日本海洋学会誌》 |2005年第1期|73-84|共页
  • 作者

    MitsuoFukuchi;

  • 作者单位

    National Institute of Polar Research;

  • 收录信息 美国《科学引文索引》(SCI);
  • 原文格式 PDF
  • 正文语种 英语
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