| 渤海湾表层海水中浮游细菌群落随离岸距离的分布特征及其影响因素 |
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| 引用本文： | 赵维,王敬敬,徐松,李晴晴,杨榕,张小霞,黄志勇.渤海湾表层海水中浮游细菌群落随离岸距离的分布特征及其影响因素[J].海洋学报,2019,41(12):156-171. |
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| 作者姓名： | 赵维 王敬敬 徐松 李晴晴 杨榕 张小霞 黄志勇 |
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| 作者单位： | 中国科学院天津工业生物技术研究所天津市工业生物系统与过程工程重点实验室,天津300308;中国科学院天津工业生物技术研究所天津市工业生物系统与过程工程重点实验室,天津300308;中国科学院天津工业生物技术研究所天津市工业生物系统与过程工程重点实验室,天津300308;中国科学院天津工业生物技术研究所天津市工业生物系统与过程工程重点实验室,天津300308;中国科学院天津工业生物技术研究所天津市工业生物系统与过程工程重点实验室,天津300308;中国科学院天津工业生物技术研究所天津市工业生物系统与过程工程重点实验室,天津300308;中国科学院天津工业生物技术研究所天津市工业生物系统与过程工程重点实验室,天津300308 |
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| 基金项目： | 天津市科技计划项目（18ZXSZSF00100，18YFZCNC01180，16YFXTSY00580）；国家自然科学基金项目（3150020230）；中国科学院战略生物资源计划（KFJ-BRP-009）。 |
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| 摘 要： | 为研究渤海湾近岸污染对远近岸海域微生态的影响，利用高通量测序技术，对渤海湾不同离岸距离的6个站位采集表层海水，进行浮游细菌群落结构分析，结合环境、空间因素探究影响其变化的主要因素。结果表明:研究区域存在环境因子的梯度变化，如氮营养盐在近岸高于远岸；细菌α-多样性在不同站位间差异不显著，但仍显示在近岸相对较高；细菌群落结构随离岸距离变化显著，γ-变形菌和拟杆菌在近岸显著富集，且与氮营养盐的含量有关；蓝细菌在远岸显著富集，且与氨氮、透明度、电导率有关；邻体矩阵主坐标单独解释部分对群落结构变异的贡献率最大(38.1%)，说明可能存在尚未测量但具有空间结构的环境变量影响群落空间分布；结合功能预测的结果推测近岸区域的富营养与烃类污染等可能影响群落变化。本文从环境和空间影响两方面探讨了渤海湾不同离岸距离的海域浮游细菌群落结构变化，为研究渤海湾海洋生态及环境保护提供一定的参考。
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| 关 键 词： | 渤海湾 浮游细菌群落结构 地理分布 功能预测 邻体矩阵主坐标 |
| 收稿时间： | 2018/12/12 0:00:00 |
| 修稿时间： | 2019/6/21 0:00:00 |
Distribution characteristics and influencing factors of bacterioplankton community with offshore distance variation in the surface seawater of Bohai Bay |
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| Zhao Wei,Wang Jingjing,Xu Song,Li Qingqing,Yang Rong,Zhang Xiaoxia and Huang Zhiyong.Distribution characteristics and influencing factors of bacterioplankton community with offshore distance variation in the surface seawater of Bohai Bay[J].Acta Oceanologica Sinica (in Chinese),2019,41(12):156-171. |
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| Authors: | Zhao Wei Wang Jingjing Xu Song Li Qingqing Yang Rong Zhang Xiaoxia and Huang Zhiyong |
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| Institution: | Tianjin Key Laboratory for Industrial Biological Systems and Bioprocessing Engineering, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin 300308, China |
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| Abstract: | In order to study the impact of coastal pollution in Bohai Bay on the microecology of sea areas with different distances from the shore, the bacterioplankton community compositions (BCCs) in surface seawater samples from 6 stations with different offshore distances along the coastal region of Bohai Bay were analyzed through high throughput sequencing technology, and the main factors affecting the variation of BCCs were explored by combining environmental and spatial factors in this region. The results showed that there was gradient change of environmental factor in the studied region, such as the contents of nitrogen nutrients were higher in the nearshore station than those in the offshore station. Although there was no significant difference tested for the alpha diversity among different sites, the diversity indexes were still relatively higher in the nearshore stations. The bacterioplankton community compositions were significantly varied with the change of offshore distances. Members of Gammaproteobacteria and Bacteroidetes were mainly enriched in nearshore stations which were closely related with the contents of nitrogen nutrients, members of Cyanobacteria were mainly enriched in offshore stations, which were closely related to ammonia nitrogen, transparency and conductivity. The variance partitioning analysis showed that PCNM variables purely contributed most (38.1%) to the variation of community structure, indicating that there may be environmental variables with spatial structure within the research scope that had not yet been measured may affect the spatial distribution of the bacterioplankton community. Meanwhile, the results of functional prediction indicated that the eutrophication, hydrocarbon pollution and other environmental conditions in the nearshore station may contribute to the change of BCCs. This study explored the variation of offshore-distance-varied BCC in the coastal region of Bohai Bay from environmental and spatial impact, which may provide reference for the study and protection of marine environment in Bohai Bay. |
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| Keywords: | Bohai Bay bacterioplankton community composition geographic distribution function prediction PCNM |
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