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中文摘要：
利用流式细胞技术,获取南黄海夏季微微型浮游生物丰度数据,分析了其组成和分布规律,并探讨了主要的影响因子。2011年夏季,聚球藻、微微型真核藻、异养细菌在整个调查海区的平均丰度分别在1×104、1×103、1×106 cells/mL数量级上。在全调查海区,聚球藻和微微型真核藻受温度和光照的限制明显,主要集中分布在温跃层及其以上水层;而营养盐的限制较小,它们的影响只有在沿岸流影响明显的西部海区才能较为明显的体现出来。结果表明在该海域浓度较高的营养盐能够促进微微型浮游生物的生长,但不是其限制因素;异养细菌受环境因子限制较小,即使在深海也保持着较高的丰度。
英文摘要：
The composition and distribution of picoplankton were mainly investigated in the southern Yellow Sea in summer. The effects of main environmental factors were also discussed in the study. The seawater samples were analyzed using Flow Cytometer, and the average abundance of Synechococcus, picoeukaryotes and bacteria were at order of 1×104 , 1 × 103 , 1 × 106 cells/mL, respectively. The influence of environmental factors including temper- ature, salinity, nutrients and light on picoplankton were discussed. The results revealed that the picoplankton were limited obviously by temperature and light, but less limited by nutrients. Only in the of{shore, the influence of nu- trients was reflected by the abnormal high picoplankton abundance. Bacteria were limited little by the environmen- tal factors for their high environment adaptability, and they could keep high abundance even in the deep water.
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