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根据1987~1990年间在台湾以北海域进行的6个航次的调查资料,对该海域浮游桡足类数量分布作了探讨,结果表明,本区浮游桡足类丰度在春季最高,冬季最低,夏、秋季介于中间;黑潮锋内侧的桡足类丰度一般高于黑潮锋外侧,较高丰度区的分布具夏季最向外海、冬季最靠近岸、其他两季居中的趋势,这与黑潮锋位的季节摆动趋势基本相一致;浮游桡足类丰度的较高值区一般出现在不同水系的交汇区,尤其是黑潮次表层水涌升域的近岸边缘侧,而在黑潮次表层水的主水体中,因溶解氧含量低等因素,其丰度一般均较低;浮游桡足类丰度垂直分布趋势为随水深增加而减低,生物本身昼夜垂直移动规律可能是局部区域产生异常分布的原因之一.
Based on the survey data of 6 voyages in the sea area north of Taiwan from 1987 to 1990, the quantity distribution of pelagic copepods in this area was discussed. The results showed that the abundance of pelagic copepods in this area was the highest in spring and the lowest in winter, Summer and autumn. The abundance of copepods inside the Kuroshio front is generally higher than that of the Kuroshio front. The distribution of the higher abundance areas is the most outward in summer, the winter is closest to the shore, and the other two quarters are in the middle. This is consistent with the trend of the seasonal oscillation of the Kuroshio front. The higher values of the abundance of planktonic copepods usually appear at the intersections of different water systems, especially on the near-shore edge of the karst upwelling of Kuroshio, In the main body of Kuroshio sub-surface water, the abundance of dissolved oxygen is generally low due to the low dissolved oxygen content. The vertical distribution trend of the abundance of planktonic copepods decreases with the increase of water depth, and the vertical movement of organisms themselves It may be one of the reasons for the abnormal distribution in the local area.