生态环境学报Issue(2)：289-294,6.
pH对鱼腥藻和普通小球藻生长竞争的影响
Effect of pH on growth and competition of Chlorella vulga and Anabaenasp.strain PCC
摘要
Abstract
Chlorella vulga is a common freshwater algae and Anabaenasp.strain PCC is one of the most common blue-green algae in eutrophication lakes. The pH value is an important physical and chemical indicator of algae growing environment. The growth of algae could be affected by pH value, carbonate balance system and Distribution of inorganic carbon. In order to know the growth of water bloom blue-green algae in eutrophication lakes and the relationship between algae growth and pH, the experiment was carried out to investigate the interspecies competition between Chlorella vulga and Anabaenasp.strain PCC at different pH value. The test set up 4 pH gradients at 6.0, 7.0, 8.0, 9.0. The results indicated that Chlorella vulga and Anabaenasp.strain PCC grew best at pH 9.0 both in the uni-culture system and the co-culture system. The maximal biomass of Anabaenasp.strain PCC was 4 473.5×104 cells⋅mL-1 in uni-culture system and 2 798.0×104 cells⋅mL-1 in co-culture system. While the maximal biomass of Chlorella vulga was 689.6×104 cells⋅mL-1 and 296.5×104 cells⋅mL-1 accrdingly. The inhibition parameter of interspecies competition could be significantly influenced by pH(P<0.05). The maximal inhibition parameter of Anabaenasp.strain PCC against Chlorella vulga was found at pH 6.0 and the number was 1.778. The maximal inhibition parameter of Chlorella vulga against Anabaenasp.strain PCC was found at pH 7.0 and the number was 12.91. The inhibition parameters of Chlorella vulga against Anabaenasp.strain PCC were larger than that of Anabaenasp.strain PCC against Chlorella vulga at each pH, which meant that the inhibition effects of Chlorella vulga on Anabaenasp.strain PCC were stronger than that of Anabaenasp.strain PCC on Chlorella vulga. In aquaculture, therefore, we can adjust the pH value of aquatic water and the concentration of the ordinary Chlorella vulga to control algae growth, both in aquaculture process control, accurate water technology research, and process control of aquaculture water eutrophication.关键词
普通小球藻/鱼腥藻/pH/种间竞争Key words
Chlorella vulga/Anabaenasp.strain PCC/pH/interspecies competition分类
生物科学引用本文复制引用
陈家长,王菁,裘丽萍,孟顺龙,范立民,宋超..pH对鱼腥藻和普通小球藻生长竞争的影响[J].生态环境学报,2014,(2):289-294,6.基金项目
中央级公益性科研院所基本科研业务费专项资金项目(2013JBFM06)；现代农业产业技术体系建设专项项目(CARS-49)；无锡市农业产学研合作项目 （2013JBFM06）
