富营养化
亚热带
营养水平
放线菌门
群落结构
生态学
生物
细菌
营养物
16S核糖体RNA
遗传学
作者
Nan Li,Xing Chen,Huaxian Zhao,Junwu Tang,Gonglingxia Jiang,Zhuoting Li,Xiaoli Li,Jizhong Zhou,Shuqi Zou,Ke Dong,Qiangsheng Xu
标识
DOI:10.1016/j.marpolbul.2020.111742
摘要
In this study, we investigated the specific bacterial distribution and the response of bacterial communities to shifts in environmental factors in the subtropical Beibu Gulf, southern China. The abundances of Actinobacteria, Bacilli, Planctomycetia, Thermoleophilia, Anaerolineae, and Synechococcophycideae were significantly higher in high eutrophic samples than in medium eutrophic and oligotrophic samples. Bacterial alpha-diversity was found greater in high eutrophication samples than in the other samples. Besides, Ponticaulis koreensis, Nautella italic, Anaerospora hongkongensis, Candidatus Aquiluna rubra, and Roseovarius pacificus were sensitive to trophic variation and thus could be used as eco-markers. In addition, the relative abundances of functional genes involving carbohydrate and amino acid metabolism were very high among the samples. We also found temperature, Chl-a, TDN and NO3− were the main environmental drivers of bacterial community structure. Overall, this study provides new insight into the composition of bacterial community and function response to gradients of eutrophication in Beibu Gulf.
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