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首页> 外文期刊>Journal of oceanography >Interannual Variations of the Planktonic Ecosystem in the Slope Water and Kuroshio South of Japan in February in the Years 1990-2002
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Interannual Variations of the Planktonic Ecosystem in the Slope Water and Kuroshio South of Japan in February in the Years 1990-2002

机译：1990-2002年2月日本坡水和黑潮南部浮游生态系统的年际变化。

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摘要

To determine recent interannual variations in the planktonic ecosystem of the slope water south of Japan, an area between 1000 m isobath on the continental slope and assumable Kuroshio front, in reference to preceding reports on the Kuroshio, we ex-amined interannual variations of physical factors, sea surface chlorophyll concentra-tion (SSChl), size-fractioned copepod biomass and the abundance of Calanus sinicus, one of the dominant copepods in the region, in February from 1990 to 2002. In the slope water, SSChl concentration had generally shown a higher value than in the Kuroshio and increase of the SSChl in both areas started in February but lasted longer in the slope water. The regional distribution of copepod biomass and C. sinicus abun-dance was similar to that of phytoplankton in that they were distributed more densely in the slope water than in the Kuroshio, reflecting assumed higher nutrient supply. The interannual variation in sea surface temperature in the slope water was explained by the rise of air temperature in 1998, a strong El Nino year, and subsequent change in the Kuroshio path (1999-2001). The interannual variation of the planktonic com-munity, i.e. sea surface chlorophyll concentration and copepod biomass, was attrib-uted to the effects of those physical events through the direct effect of local tempera-ture and/or variation in surface irradiance, except for a prominent increase of copepods in the slope water in 2000. The effect of interannual change in the vertical mixing, suggested in previous studies, was not apparent in February, when the primary pro-duction is not limited by nutrient concentration which would be more important in regulating biological production in later months.
机译：为了确定日本南部斜坡水的浮游生态系统最近的年际变化，大陆坡上等深线1000 m和假定的黑潮锋之间的区域，参考先前关于黑潮的报道，我们研究了物理因素的年际变化。 1990年至2002年2月，海藻的叶绿素浓度（SSChl），大小分级的pe足类生物量和该地区主要co足类之一中华C（Calanus sinicus）的丰度。在斜坡水中，SSChl浓度普遍显示比黑潮地区更高的价值和两个地区SSChl的增加都始于2月，但在斜坡水中持续时间更长。 pe足类生物量和中华绒螯蟹丰度的区域分布与浮游植物的区域分布相似，因为它们在斜坡水中的分布比在黑潮中更密集，这反映了假定的更高养分供应。 1998年的空气温度上升，厄尔尼诺现象旺盛的一年以及随后的黑潮路径变化（1999-2001年）解释了斜坡水中海表温度的年际变化。浮游生物的年际变化，即海面叶绿素浓度和co足类生物量，是通过局部温度和/或表面辐照度变化的直接影响归因于这些物理事件的影响，除了2000年坡足水中of足类动物的显着增加。在先前的研究中，垂直混合的年际变化的影响在2月份并不明显，那时主要的生产不受养分浓度的限制，而在养分浓度方面更重要。在以后的几个月中调节生物生产。

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  • 来源
    《Journal of oceanography》 |2010年第6期|p.741-753|共13页
  • 作者

    Kiyotaka Hidaka; Kaoru Nakata;

  • 作者单位

    National Research Institute of Fisheries Science, Fisheries Research Agency,Fukuura, Kanazawa-ku, Yokohama, Kanagawa 236-8648, Japan;

    National Research Institute of Fisheries Science, Fisheries Research Agency,Fukuura, Kanazawa-ku, Yokohama, Kanagawa 236-8648, Japan;

  • 收录信息 美国《科学引文索引》(SCI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    slope water; kuroshio; copepod; phytoplankton bloom;

    机译：斜坡水;黑潮pe足类浮游植物开花;

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