Diversity of Planktonic Bacterial Communities in Haizhou Bay
Marine bacteria,as the most abundant microbiological group in the middle and upper waters of the ocean,dominate the biogeochemical cycles of carbon sequestration,sulfur cycle,ni-trification and ammonia oxidation in the ocean.As the most western open bay of the South Yellow Sea,Haizhou Bay is rich in resources and is one of the four major fishing grounds in Jian-gsu Province.However,there is still a lack of systematic research on the distribution of bacterial community in Haizhou Bay.In this study,high-throughput sequencing technology was used to investigate the community structure and diversity of bacteria at 8 stations in the northern and southern of Haizhou Bay.The results showed that the biodiversity and richness of bacteria were highest in the northern Haizhou Bay,while lowest in the offshore stations.A total of 43 phyla and 373 families were found in all the samples,among which Rhodobacteraceae,Moraxellaceae,Flavobacteriaceae and Actinomarinaceae were the dominant families.β-diversity analysis based on Bray-Curtis distance showed significant differences in bacterial community structure between the southern and northern parts of Haizhou Bay,172 different taxa were identified by LEfSe analy-sis.Mantel test showed that the differences of environmental factors significantly affected the composition of bacterial community in Haizhou Bay,in which temperature,p H and NH4+-N sig-nificantly affected the composition of bacterial community through directly or indirectly affected the growth and metabolism of bacteria.
bacterial diversitycommunity compositionHaizhou Bay
NETL
NSTL
万方数据
