Bacterioplankton, Picoeukaryotes and Synechococcus Distribution Associated with Seagrass in South Coast of Hainan Island, China
- 1 State Key Laboratory of Oceanography in the Tropics, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
- 2 Shandong Provincial Key Laboratory of Fishery Resources and Ecological Environment, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China
- 3 State Key Laboratory of Oceanography in the Tropics, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
Abstract
Seagrass ecosystem is a potential bank for carbon sink. In the paper, we compared the distribution of bacterioplankton, picoeukaryotes and Synechococcus in seagrass ecosystem in Xincun Bay and coral ecosystem in Sanya Bay and found that quantity of bacterioplankton was higher in seagrass ecosystem, and picoeukaryotes had similar distribution pattern with that of bacterioplankton. However, quantity of Synechococcus distribution was higher in coral ecosystem and higher in Sanya Bay. Comparing the unit of quantity of bacterioplankton, picoeukaryotes and Synechococcus in Xincun Bay with that of Sanya Bay, open sea of the South China Sea and Indian Ocean, results showed that the highest quantity of bacterioplankton was in Xincun Bay, and the lowest was in open sea of the South China Sea. The quantity of picoeukaryotes had the similar pattern with that of bacterioplankton. Pattern of Synechococcus quantity was different, which was the highest in Sanya Bay. These results indicated that seagrass ecosystem was more suitable for bacterioplankton and picoeukaryotes growth.
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