• Korean Journal of Microbiology
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• v.51 no.3
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• pp.312-317
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• 2015

Pyrosequencing of 16S rDNA tags was used to obtain the bacterial diversity and community structure in the uncultured seawaters as well as in the cultured seawaters, which were collected from the 7 ports (Cheonbu, Hyunpo, Taeha, Namyang, Sadong, Dodong, and Jeodong) and 1 seashore (Guam) around the Ulleng island, Korea. Alphaproteobacteria were the most abundant group in the clean seawaters such as seawaters of Taeha and Sadong ports. Gammaproteobacteria proportion increased depending upon the wastewater amounts mixed with the seawaters such as seawaters of Namyang, Dodong, and Jeodong ports. The genuses of Alteromonas (from samples of Cheonbu, Taeha, Guam, Namyang, Sadong), Shewanella (from sample of Jeodong), and Vibrio (from samples of Hyunpo and Dodong) were dominant group in each of the cultured seawaters incubated in marine broth (Difoco). The results suggest that the incoming wastewaters to the port seawaters contribute to the dynamic change of the marine bacterial community around the Ulleng island.