Abstract:The high-throughput sequencing approach was adopted to analyze the distribution characteristics of the abundance, community structure and community diversity of bacterioplankton in the southern South China Sea and their relationship with environmental factors. The results indicated that the bacterioplankton abundance in the investigated area was about 107~108cells/L with high values in offshore stations and sharp differences among water layers. The dominant groups were Proteobacteria, Cyanobacteria and Bacteroidetes and the dominant classes were γ-Proteobacteria, α-Proteobacteria, Cyanobacterium and Flavobacteria. The community structure of bacterioplankton showed an obvious difference among various water bodies and numerous unidentified bacteria were recorded. The bacterioplankton showed a high species richness in the area with a biodiversity index (H') of between 4.44~7.00. The biodiversity index in surface layers of the area was 5.26, 5.33 and 5.07, respectively, whereas the index in the upwelling subsurface layer was 6.70, which was significantly higher than other layers. DOC and phosphate were the main factors influencing the bacterioplankton abundance, phosphate was also the main factor affecting the community diversity. The growth of bacterioplankton in the southern South China Sea was therefore mainly limited by phosphate.
白洁, 刘小沙, 侯瑞, 赵阳国, 高会旺. 南海南部海域浮游细菌群落特征及影响因素研究[J]. 中国环境科学, 2014, 34(11): 2950-2957.
BAI Jie, LIU Xiao-Sha, HOU Rui, ZHAO Yang-Guo, GAO Hui-Wang. Community structure and influencing factors of bacterioplankton in the southern South China Sea. CHINA ENVIRONMENTAL SCIENCECE, 2014, 34(11): 2950-2957.