| 太湖水体中微型原生动物对细菌的捕食作用 |
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| 引用本文： | 陈默,高光,朱丽萍,冯胜.太湖水体中微型原生动物对细菌的捕食作用[J].应用生态学报,2007,18(10):2384-2388. |
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| 作者姓名： | 陈默 高光 朱丽萍 冯胜 |
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| 作者单位： | 1. 中国科学院南京地理与湖泊研究所,南京,210008;中国科学院研究生院,北京,100049
2. 中国科学院南京地理与湖泊研究所,南京,210008 |
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| 基金项目： | 国家自然科学基金;国家重点基础研究发展计划(973计划) |
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| 摘 要： | 运用稀释法研究了太湖中不同粒径的微型原生动物对细菌的捕食压力,探讨了捕食作用对细菌生长及温度对捕食作用的影响.结果表明:太湖水体中32μm以下的微型原生动物对细菌的捕食率为5.07d-1,其中大部分捕食压力来自小于16μm的超微型原生动物,占总捕食率的90.7%;小于16μm的超微型原生动物的捕食作用明显抑制了细菌的生长;温度对捕食作用有明显影响,随着温度的升高,超微型原生动物的捕食率和细菌的生长率均明显升高.
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| 关 键 词： | 植株数量 空气负离子 亚热带地区 人工气候室 空气温度 空气相对湿度 |
| 文章编号： | 1001-9332（2007）10-2384-05 |
| 修稿时间： | 2006-09-29 |
Predation of micro-protozoa on bacteria in Taihu Lake |
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| CHEN Mo,GAO Guang,ZHU Li-ping,FENG Sheng.Predation of micro-protozoa on bacteria in Taihu Lake[J].Chinese Journal of Applied Ecology,2007,18(10):2384-2388. |
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| Authors: | CHEN Mo GAO Guang ZHU Li-ping FENG Sheng |
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| Institution: | 1Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China; 2Graduate University of Chinese Academy of Sciences, Beijing 100049, China |
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| Abstract: | With dilution method, this paper studied the predation of different size micro-protozoa on bacteria in Taihu Lake, and approached the effects of the predation on bacterial growth and of the water temperature on the predation. The results showed that in the water body of Taihu Lake, the predation rate of micro-protozoa with its size less than 32 microm was 5.07 d(-1), and the nano-size (less than 16 microm) protozoa contributed about 90.7%. The predation of nano-protozoa reduced the abundance of bacteria significantly. With the increase of water temperature, the predation rate of nano-protozoa and the growth rate of bacteria increased obviously. |
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| Keywords: | Taihu Lake micro-protozoa predation dilution method |
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