中文摘要：

研究被执行在 2006 年 10 月在黄海冷水团(YSCWM ) 区域在细菌集合上调查不是自养的 nanoflagellates (HNF ) 的放牧压力。结果证明 HNF 丰富从 303 ～ 1 388 mL < 啜 class= “ a-plus-plus ” > 有 884 mL 的一个平均数的 1 ,< 啜 class= “ a-plus-plus ” > 1 。HNF 生物资源等价于细菌的 10.6%115.6% 。最大的许多 HNF 通常发生了在上面 30 m 水层与比中间的层丰富大的表面层丰富的一个垂直分发模式，然后底部层丰富。YSCWM 位于学习区域的东北部分的水文学数据表演，典型地在表面下面的 40 m。弱关联在 YSCWM 和它的上面的水层在许多 HNF 和细菌之间被发现。单程的 ANOVA 分析表明许多 HNF 和细菌不同在之间在 YSCWM 内并且在上述水团中。细菌上的 HNF 的摄取率是 8.02

英文摘要：

A study was carried out to investigate the grazing pressure of heterotrophic nanoflagellates （HNF） on bac-teria assemblages in the Yellow Sea Cold Water Mass （YSCWM） area in October, 2006. The results show that the HNF abundance ranges from 303 to 1388 mL-1, with a mean of 884 mL-1. The HNF biomass is equivalent to 10.6%-115.6% of that of the bacteria. The maximum abundance of the HNF generally occurred in the upper 30 m water layer, with a vertical distribution pattern of surface layer abundance greater than middle layer abundance, then bottom layer abundance. The hydrological data show that the YSCWM is located in the northeastern part of the study area, typically 40 m beneath the surface. A weak correlation is found be- tween the abundances of HNF and bacteria in both the YSCWM and its above water layer. One-way ANOVA analysis reveals that the abundance of HNF and bacteria differs between inside the YSCWM and in the above water mass. The ingestion rates of the HNF on bacteria was 8.02±3.43 h-1 in average. The grazing rate only represented 22.75%±6.91% of bacterial biomass or 6.55%±4.24% of bacterial production, implying that the HNF razinR was not the major factor contributing to the bacterial loss in the YSCWM areas.