| 梁子湖与后官湖浮游细菌的群落结构特征 |
| Bacterioplankton Community Structure Characteristics in Liangzi Lake and Houguan Lake, Wuhan |
| 投稿时间：2019-05-18 修订日期：2021-03-23 |
| DOI：10.15928/j.1674-3075.201905180125 |
| 中文关键词:浮游细菌 群落结构 环境因子 梁子湖 后官湖 |
| 英文关键词:planktonic bacteria community structure environmental factors Liangzi Lake Houguan Lake |
| 基金项目:公益性行业科研专项“湖泊水库养殖容量及生态增养殖技术研究与示范”（201303056） |
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| 中文摘要: |
| 探讨浮游细菌群落结构与环境因子的关系，可为湖泊治理及评价提供理论支持。2018年4月对梁子湖和后官湖两个富营养型湖泊进行了水体理化性质分析与浮游细菌群落调查。利用16S rRNA基因高通量测序，分析比较浮游细菌群落结构及其多样性的差异，并通过冗余分析（RDA）探讨环境因子与浮游细菌群落结构的关系。结果表明，梁子湖和后官湖均有较高的浮游细菌群落多样性，其Shannon指数分别为3.974～4.743和3.924～4.500；梁子湖与后官湖的浮游细菌群落结构有所差异，梁子湖菌群隶属于放线菌门（Actinomycetes）、变形菌门（Proteobacteria）、拟杆菌门（Bacteroides）、蓝细菌门（Cyanobacteria）、疣微菌门（Verrucomicrobia）、绿菌门（Chlorobi）、绿弯菌门（Chloroflexi）、装甲菌门（Armatimonadetes）、厚壁菌门（Firmicutes）和硝化螺旋菌门（Nitrospirae）；后官湖菌群隶属于放线菌门、蓝细菌门、变形菌门、拟杆菌门、疣微菌门、芽单胞菌门（Gemmatimonadetes）、绿弯菌门、绿菌门、浮霉菌门（Planctomycetes）、装甲菌门和螺旋体菌门（Saccharibacteria）；其中，梁子湖的优势菌群为放线菌门（20.09%～43.23%）和变形菌门（21.35%～35.28%），而后官湖的优势菌群为放线菌门（20.70%～42.69%）和蓝细菌门（14.4%～45.77%）。RDA分析表明，总氮（TN）、pH、总磷（TP）是影响微生物群落结构的主要环境因子。 |
| 英文摘要: |
| Microorganisms are an important part of freshwater ecosystems, playing a crucial role in the biogeochemical cycling of nutrients and decomposition of organic matter. The microbial community is very sensitive to environmental changes and can be used as an indicator of aquatic ecological conditions. In this paper, we discussed the relationship between planktonic bacterial community structure and environmental factors in two eutrophic lakes in Wuhan, Liangzi Lake and Houguan Lake, aiming to provide theoretical support for lake management and assessment. In April 2018, a survey of the planktonic bacterial community and the physicochemical properties of the lakes were carried out at 15 sampling sites, 10 on Liangzi Lake and 5 on Houguan Lake. High-throughput sequencing of 16S rRNA genes was used to analyze and compare the differences in structure and diversity of the planktonic bacterial communities in the two lakes, and redundancy analysis (RDA) was used to explore the relationship between environmental factors and planktonic bacterial community structure. Both Liangzi Lake and Houguan Lake had highly diverse planktonic bacterial communities, with respective Shannon indices in the ranges of 3.974-4.743 and 3.924-4.500. There were differences in the bacterioplankton community structures of Liangzi Lake and Houguan Lake. The bacterioplankton community composition of Liangzi Lake included Actinomycetes, Proteobacteria, Bacteroides, Cyanobacteria, Verrucomicrobia, Chlorobi, Chloroflexi, Armatimonadetes, Firmicutes and Nitrospirae, with domination by Actinomycetes (20.09%-43.23%) and Proteobacteria (21.35%-35.28%). The bacterioplankton community in Houguan Lake was composed of Actinomycetes, Cyanobacteria, Proteobacteria, Bacteroides, Verrucomicrobia, Gemmatimonadetes, Chloroflexi, Chlorobi, Planctomycetes, Armatimonadetes and Saccharibacteria, with domination by Actinomycetes (20.70%-42.69%) and Cyanobacteria (14.4%-45.77%). RDA indicated that pH, TN and TP were the primary environmental factors affecting microbial community structure. |
| 邹沈娟,尹立强,赵博礼,陈培培,魏蒲生,马徐发.2021.梁子湖与后官湖浮游细菌的群落结构特征[J].水生态学杂志,42(2):33-41. |
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