Bacterial community responses to the redox profile changes of mariculture sediment

文献类型： 外文期刊

第一作者： Shi, Rongjun

作者： Shi, Rongjun;Han, Tingting;Xu, Shumin;Huang, Honghui;Qi, Zhanhui;Shi, Rongjun;Han, Tingting;Xu, Shumin;Huang, Honghui;Qi, Zhanhui;Zhu, Qingzhi;Huang, Honghui

作者机构：

关键词： Aerobic zone; Oxidation zone; Anaerobic zone; Bacterial community; Co-occurrence network; Keystone taxa

期刊名称：MARINE POLLUTION BULLETIN （ 影响因子：4.049； 五年影响因子：4.407 ）

ISSN： 0025-326X

年卷期： 2021 年 166 卷

页码：

收录情况： SCI

摘要： Suspended mariculture has significantly influences on the benthic sediment. However, our understanding on how bacterial communities respond to mariculture induced changes in redox profiles is limited. In present study, sediments from two maricultures and reference areas were collected and incubated for 28 day. The results indicated that the dominant pathway of organic matter mineralization in the sediment varied from groups, in the reference, it was the iron reduction, but in the two mariculture groups it was the SO42- reduction. Remarkable changes of bacteria community were recorded in the aerobic zone, where the abundances of 14 OTUs belonging to Gammaproteobacteria and Alphaproteobacteria were significantly higher than that in oxidation and anaerobic zones. However, 4 keystone OTUs were strictly anaerobic and belonging to Desulfobacteraceae (n = 3) and Marinilabiaceae (n = 1). The main environmental drivers determining sediment bacterial distribution were the particle organic carbon, dissolve oxygen, NO3-, and moisture content.

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