Seasonal Dynamics of Marine Microbial Community in the South Sea of Korea

High-resolution 16S rRNA tag pyrosequencing was used to obtain seasonal snapshots of the bacterial diversity and community structure at two locations in Gosung Bay (South Sea, Korea) over a one year period. Seasonal sampling from the water column at each site revealed highly diverse bacterial commun...

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Bibliographic Details
Published in:PloS one 2015-06, Vol.10 (6), p.e0131633-e0131633
Main Authors: Suh, Sung-Suk, Park, Mirye, Hwang, Jinik, Kil, Eui-Joon, Jung, Seung Won, Lee, Sukchan, Lee, Taek-Kyun
Format: Article
Language:English
Subjects:
Annual variations
Bacteria
Bacteria - classification
Bacteria - genetics
Biodiversity
Chlorophyll
Climate change
Cluster Analysis
Columns (structural)
Communities
Community structure
Correlation analysis
Ecology
Ecosystems
Environmental changes
Environmental factors
Eutrophication
Evolution, Molecular
Genetic engineering
Geography
Microorganisms
Nutrients
Phylogeny
Republic of Korea
RNA
RNA, Ribosomal, 16S - genetics
rRNA 16S
Salinity
Sampling
Science
Seasonal variations
Seasons
Seawater - microbiology
Silicon dioxide
Spatial distribution
Studies
Taxonomy
Water column
Water Microbiology
Water temperature
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Summary:High-resolution 16S rRNA tag pyrosequencing was used to obtain seasonal snapshots of the bacterial diversity and community structure at two locations in Gosung Bay (South Sea, Korea) over a one year period. Seasonal sampling from the water column at each site revealed highly diverse bacterial communities containing up to 900 estimated Operational Taxonomic Units (OTUs). The Alphaproteobacteria and Gammaproteobacteria were the most abundant groups, and the most frequently recorded OTUs were members of Pelagibacter and Glaciecola. In particular, it was observed that Arcobacter, a genus of the Epsilonproteobacteria, dominated during summer. In addition, Psedoalteromonadaceae, Vibrionaceae and SAR11-1 were predominant members of the OTUs found in all sampling seasons. Environmental factors significantly influenced the bacterial community structure among season, with the phosphate and nitrate concentrations contributing strongly to the spatial distribution of the Alphaproteobacteria; the Gammaproteobacteria, Flavobacteria, and Actinobacteria all showed marked negative correlations with all measured nutrients, particularly silicon dioxide and chlorophyll-a. The results suggest that seasonal changes in environmental variables contribute to the dynamic structure of the bacterial community in the study area.
ISSN:1932-6203
1932-6203
DOI:10.1371/journal.pone.0131633