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首页> 外文期刊>Journal of oceanography >Long-term (1998-2007) trends on the spatial distribution of heterotrophic ciliates in the East China Sea in summer: effect of the Three Gorges Dam construction
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Long-term (1998-2007) trends on the spatial distribution of heterotrophic ciliates in the East China Sea in summer: effect of the Three Gorges Dam construction

机译：夏季东海异养纤毛虫的长期（1998-2007）空间分布趋势：三峡大坝建设的影响

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摘要

The spatial distribution of heterotrophic ciliates, environmental factors and potential food items (bacteria, Synechococcus spp. and nanoflagellates) were measured in the East China Sea to examine which variables contributed importantly to the long-term distribution of ciliates between 1998 and 2007. In July 1998 and June 2003, heterotrophic ciliates were found to be abundant (1,000-2,000 × 10~3 cells m~(-3)) in regions where surface salinity <32 but extremely low (<500 × 10~3 cells m~(-3)) in shelf waters of surface salinity >32. After August 2003, shortly after the completion of the Three Gorges Dam, we found no significant areal differences in the abundance of heterotrophic ciliates (HC). However, we found a significantly negative correlation between temperature and HC abundance of surface water after the completion of the dam, suggesting that temperature had a greater influence on HC abundance, once the original saline state had changed. For the long-term trends on the vertical distribution of HC, their abundance was significantly higher in the upper 50 m of the water column than at either 75 or 100 m. Abundance of Synechococcus spp. at these levels varied significantly in regions of surface salinity <32, suggesting that ciliates and picophytoplankton contribute greatly to mediating the transfer of organic matter to higher trophic levels in this marine ecosystem.
机译：在东海中测量了异养纤毛虫的空间分布，环境因素和潜在食物（细菌，粘膜球菌和纳米鞭毛虫），以调查哪些变量对纤毛虫在1998年至2007年的长期分布有重要贡献。 1998年和2003年6月，在表面盐度<32但极低（<500×10〜3细胞m〜（-）的地区发现异养纤毛虫丰富（1,000-2,000×10〜3细胞m〜（-3））。 3））在表面盐度> 32的架子水中。在三峡大坝建成后不久的2003年8月，我们发现丰富的异养纤毛虫（HC）的面积没有显着差异。但是，我们发现大坝建成后，温度与地表水的HC含量之间存在显着的负相关关系，这表明一旦原始盐碱状态发生变化，温度对HC含量的影响更大。对于HC垂直分布的长期趋势，水柱上部50 m的丰度明显高于75或100 m。 Synechococcus spp的丰富。在这些水平上，盐分<32的区域变化显着，表明纤毛虫和浮游浮游生物在介导该海洋生态系统中有机物向较高营养级的转移方面做出了巨大贡献。

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  • 来源
    《Journal of oceanography》 |2011年第6期|p.725-737|共13页
  • 作者

    An-Yi Tsai; Gwo-Ching Gong; Kuo-Ping Chiang; Chien-Fu Chao; Herng-Ru Guo;

  • 作者单位

    Institute of Marine Environmental Chemistry and Ecology, National Taiwan Ocean University, Keelung 202-24, Taiwan, ROC;

    Institute of Marine Environmental Chemistry and Ecology, National Taiwan Ocean University, Keelung 202-24, Taiwan, ROC;

    Institute of Marine Environmental Chemistry and Ecology, National Taiwan Ocean University, Keelung 202-24, Taiwan, ROC,Institute of Environmental Biology and Fishery Science, National Taiwan Ocean University, Keelung 202-24, Taiwan, ROC;

    Center of Excellence for Marine Bioenvironment and Biotechnology, Keelung, Taiwan, ROC,Institute of Environmental Biology and Fishery Science, National Taiwan Ocean University, Keelung 202-24, Taiwan, ROC;

    Institute of Environmental Biology and Fishery Science, National Taiwan Ocean University, Keelung 202-24, Taiwan, ROC;

  • 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

    heterotrophic ciliates; east china sea; picophytoplankton;

    机译：异养纤毛虫;东海;浮游植物;

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