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Title: Changes in the Synechococcus assemblage composition at the surface of the East China Sea due to flooding of the Changjiang River
Authors: Yun-Chi Lin
Chih-Ching Chung
Gwo-Ching Gong
Chin-Yi Huang
Jer-Young Lin
Contributors: 國立臺灣海洋大學:海洋環境化學與生態研究所
Keywords: Synechococcus
16S rRNA
East China Sea
Global change
Date: 2015-04
Issue Date: 2017-02-10
Publisher: Microbial Ecology
Abstract: Abstract: The aim of this study was to elucidate how flooding of the Changjiang River affects the assemblage composition of phycoerythrin-rich (PE-rich) Synechococcus at the surface of the East China Sea (ECS). During non-flooding summers (e.g., 2009), PE-rich Synechococcus usually thrive at the outer edge of the Changjiang River diluted water coverage (CDW; salinity ≤31 PSU). In the summer of 2010, a severe flood occurred in the Changjiang River basin. The plentiful freshwater injection resulted in the expansion of the CDW over half of the ECS and caused PE-rich cells to show a uniform distribution pattern, with decreased abundance compared with the non-flooding summer. The phylogenetic diversity of 16S rRNA gene sequences indicated that the flooding event also shifted the picoplankton community composition from being dominated by Synechococcus, mainly attributed to the clade II lineage, to various orders of heterotrophic bacteria, including Actinobacteria, Flavobacteria, α-Proteobacteria, and γ-Proteobacteria. As an increasing number of studies have proposed that global warming might result in more frequent floods, combining this perspective with the information obtained from our previous [1] and this studies yield a more comprehensive understanding of the relationship between the composition of the marine Synechococcus assemblage and global environmental changes.
Relation: 70(3)
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/41183
Appears in Collections:[海洋環境與生態研究所] 期刊論文

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