State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, 73 Beijing East Road, Nanjing 210008, China.
J Basic Microbiol. 2012 Feb;52(1):99-103. doi: 10.1002/jobm.201100150. Epub 2011 Nov 3.
We investigated changes in bacterial communities of the sediment in a large, shallow, eutrophic, freshwater Lake Taihu, China, during typhoon Morakot (August 7 to 13, 2009). Based on cluster analysis of the DGGE banding patterns, bacterial communities in different sediment samples were very similar to each other. However, samples from the middle period of the typhoon were different from those of the early and late periods of the typhoon. Two bacterial groups, Bacteroidetes and Nitrospirae, rapidly appeared or increased in the sediment samples of the middle period of the typhoon, due to the strong turbulence in the water column caused by typhoon resulted in the exchange of surface sediment with a high level of organic matter with the water column, and severe disturbance to the anaerobic layer of the sediments. Redundancy analysis showed that organic matter contributed significantly to the changes in sediment bacterial communities during the typhoon. Our study demonstrated that the response of sediment bacterial communities to the typhoon event was very rapid but of short duration.
我们研究了 2009 年 8 月 7 日至 13 日中国大型浅水富营养化淡水湖泊太湖底泥中细菌群落的变化。基于 DGGE 条带图谱的聚类分析，不同底泥样品中的细菌群落彼此非常相似。然而，台风早期和晚期的底泥样品与台风中期的底泥样品不同。由于台风引起的水柱状强烈动荡导致高有机质含量的表层底泥与水柱之间发生交换，以及对底泥的厌氧层产生严重干扰，因此在台风中期的底泥样品中，细菌门的两个群组（拟杆菌门和硝化螺旋菌门）迅速出现或增加。冗余分析表明，有机质对台风期间底泥细菌群落的变化有重要贡献。我们的研究表明，底泥细菌群落对台风事件的响应非常迅速，但持续时间很短。
