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引用本文:朱丽萍,高光,汤祥明,晁建颖,沈燕.微囊藻水华期间水体及藻体上细菌的动态.湖泊科学,2009,21(3):395-400. DOI:10.18307/2009.0313
ZHU Liping,GAO Guang,TANG Xiangming,CAO Jianying,SHEN Yan.Variation of bacteria in water and attached on Microcystis colonies and their activity during the algal blooms. J. Lake Sci.2009,21(3):395-400. DOI:10.18307/2009.0313
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微囊藻水华期间水体及藻体上细菌的动态
朱丽萍1,2, 高光1, 汤祥明1,2, 晁建颖1,2, 沈燕1,3
1.中国科学院南京地理与湖泊研究所湖泊与环境国家重点实验室, 南京 210008;2.中国科学院研究生院, 北京 100049;3.南京农业大学, 南京 210095
摘要:
通过对水体中及附着在藻类上的细菌数量、代谢活性细菌、Chl.a浓度等的研究,探讨了藻类与细菌之间的代谢耦联关系,结果表明:1)水体中细菌的丰度随着Chl.a浓度的增加而逐渐增大(r2=0.466,P<0.05),但其峰值滞后于Chl.a;附在藻体表面上的细菌也呈现出相似的变化规律;2)水体中代谢活性细菌数量与总细菌数量显著相关(r2=0.678,P<0.05);附着在藻体上的代谢活性细菌虽然总数量低于水体中的代谢活性细菌,但二者之间亦存在显著的相关性(r2=0.836,P<0.05).3)藻类表面附着细菌的数量取决与藻类的生长状况,附着在藻类体上的代谢活性细菌的比率均高于水体中代谢活性细菌的比率,且在水华盛行期间呈逐渐增加的趋势.
关键词:  微囊藻水华  细菌丰度  藻上附着细菌  代谢活性细菌
DOI:10.18307/2009.0313
分类号:
基金项目:中国科学院知识创新工程重要方向性项目(KZCX2-YW-419);973项目(2008CB418103);国家自然科学基金项目(40573062)
Variation of bacteria in water and attached on Microcystis colonies and their activity during the algal blooms
ZHU Liping1,2, GAO Guang1, TANG Xiangming1,2, CAO Jianying1,2, SHEN Yan1,3
1.State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, P. R. China;2.Graduate School of Chinese Academy of Sciences, Beijing 100049, P. R. China;3.Nanjing Agricultural University, Nanjing 210095, P. R. China
Abstract:
The bacterial abundance and active bacterial abundance of water and algae attached, as well as the Chl.a and nutrient concentrations, were investigated, and the metabolism coupling between algae and bacteria were also discussed. The results showed: 1) The bacterial abundances of water increased with the Chl.a concentrations increasing(r2=0.466, P<0.05), although the peak value was delayed with the Chl.a concentration. Variation of the algae attached bacterial abundances were the similar patterns. 2) There was a significantly positive relationship between the active bacterial abundances and total bacterial abundance(r2=0.678,P<0.05). Although the algae attached active bacterial abundance was less than the active bacterial abundance of water, the significantly increased patterns were also founded with the active bacterial abundance of water increasing (r2=0.836, P<0.05). 3)The algae attached bacteria abundances and activities were determined by the algae growth status. The ratio of active algae attached bacteria/total algae attached bacteria was higher than that of total bacteria, and this ratio was increased in the period of May to September during the algal blooms.
Key words:  Algal blooms  bacterial abundance  algal attacted bacteria  bacterial activity
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