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薛璐, 向冬芳, 鲜博, 鲍少攀, 唐巍, 罗帅, 熊杰, 方涛. 保安湖水体细菌群落结构时空变化特征及驱动因子[J]. 水生生物学报, 2023, 47(3): 450-461. DOI: 10.7541/2023.2022.0112
引用本文: 薛璐, 向冬芳, 鲜博, 鲍少攀, 唐巍, 罗帅, 熊杰, 方涛. 保安湖水体细菌群落结构时空变化特征及驱动因子[J]. 水生生物学报, 2023, 47(3): 450-461. DOI: 10.7541/2023.2022.0112
XUE Lu, XIANG Dong-Fang, XIAN Bo, BAO Shao-Pan, TANG Wei, LUO Shuai, XIONG Jie, FANG Tao. TEMPORAL AND SPATIAL VARIATION CHARACTERISTICS AND DRIVING FACTORS OF BACTERIAL COMMUNITY STRUCTURE IN BAO’AN LAKE[J]. ACTA HYDROBIOLOGICA SINICA, 2023, 47(3): 450-461. DOI: 10.7541/2023.2022.0112
Citation: XUE Lu, XIANG Dong-Fang, XIAN Bo, BAO Shao-Pan, TANG Wei, LUO Shuai, XIONG Jie, FANG Tao. TEMPORAL AND SPATIAL VARIATION CHARACTERISTICS AND DRIVING FACTORS OF BACTERIAL COMMUNITY STRUCTURE IN BAO’AN LAKE[J]. ACTA HYDROBIOLOGICA SINICA, 2023, 47(3): 450-461. DOI: 10.7541/2023.2022.0112

保安湖水体细菌群落结构时空变化特征及驱动因子

TEMPORAL AND SPATIAL VARIATION CHARACTERISTICS AND DRIVING FACTORS OF BACTERIAL COMMUNITY STRUCTURE IN BAO’AN LAKE

  • 摘要: 为了探究保安湖水体细菌群落结构时空变化特征及驱动因子, 研究于2019年春、夏、秋、冬四季采集保安湖水样, 使用宏基因组测序技术对保安湖水体细菌群落的组成及多样性变化进行了研究。结果表明: (1)保安湖不同湖区细菌群落组成无显著差异(P>0.05); 夏、秋季细菌丰富度、均匀度、香农及辛普森多样性指数均显著高于春、冬季(P<0.05), 夏、秋季优势类群为变形菌门(Proteobacteria)、放线菌门(Actinobactetiota)、蓝藻门(Cyanobacteria), 而春、冬季变形菌门(Proteobacteria)和放线菌门(Actinobactetiota)占主导地位; (2)温度、透明度、pH、溶解氧、高锰酸盐指数、叶绿素a及总磷等因素是保安湖水体细菌群落结构变化的重要驱动因子; (3)保安湖细菌群落构建过程在春、夏、秋季由随机性过程主导, 在冬季由确定性过程主导; (4)保安湖细菌网络互作具有明显的季节特征, 从春季到冬季, 保安湖细菌种间相互作用逐渐紧密复杂。综上所述, 保安湖水体细菌群落结构具有明显的季节变化特征, 温度、透明度、pH、溶解氧、高锰酸盐指数等因素具有驱动水体细菌群落结构变化的潜能。研究可为深入了解淡水湖泊水体细菌群落时空变化规律及驱动因子提供基础资料。

     

    Abstract: To explore the temporal and spatial variation characteristics and driving factors of bacterial community structure in Bao’an Lake, water samples were collected in spring, summer, autumn and winter of 2019 in Bao’an Lake, and the composition and diversity of bacterial community in surface water of Bao’an Lake were studied using metagenomic sequencing. The results showed that: (1) There was no significant difference in bacterial community structure among different lake areas. The Richness index, Pielou index, Shannon index and Simpson index in summer and autumn were significantly higher than those in spring and winter (P<0.05). The dominant phyla in summer and autumn were Proteobacteria, Actinobacteria and Cyanobacteria, while in spring and winter, the dominant plyla were Proteobacteria and Actinobacteria; (2) Temperature, transparency, pH, dissolved oxygen, CODMn, Chl.a, and total phosphorus were main driving factors accounting for the temporal and spatial of bacterial community structure in Bao’an Lake; (3) The assembly process of bacterial community in Bao’an Lake was dominated by stochastic process in spring, summer and autumn, while deterministic process dominated in winter; (4) The bacterial network interactions in Bao’an Lake had obvious seasonal characteristics: the bacterial interspecific interaction in Bao’an Lake was becoming closer and more complex from spring to winter. In conclusion, the seasonal variation characteristics of the bacterial community structure of Bao’an lake is obvious, and the factors such as temperature, transparency, pH, dissolved oxygen and CODMn have the potential to shape the bacterial community structure. This study provides the basis for understanding the spatial-temporal characteristics of bacterial community and driving factors in freshwater lakes.

     

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