生态与农村环境学报2011，Vol.27Issue(2)：53-57,5.
不同温度下铜绿微囊藻和斜生栅藻的最佳生长率及竞争作用
Optimal Growth of and Competition Between Microcystis aeruginosa and Scenedesmus obliquus Related to Temperature.
摘要
Abstract
Growths of Microcystis aeruginosa and Senedesmus obliquus as affected by temperature were observed in monoculture and mixed-culture varying in inoculation density under controlled laboratory conditions.It was found that with the temperature varying within the range of 7 - 35 ℃, the specific growth rate of M.aeruginosa increased with the temperature, while that of S.obliquus rose first and then fell with 25 ℃ as its turning point.In the mixed culture, competition between the two algal species affected their growth rates, making them lower in the mono-culture, and in all the three mixedculture experiments, the specific growth rate of M.aeruginosa was higher than that of S.obliquus.M.aeraginosa grew the slowest in the mixed culture 10∶1 ( Microcystis aeruginosa: Scenedesmus obliquus) in inoculation ratio, whereas S.obliquus did in the mixed culture 1∶10 in ratio.In all the mixed-culture experiments, regardless of inoculation ratio and temperature, M.aeruginosa displayed stronger competitive inhibition than Scenedesmus obliquus did.The interspecific competitive inhibition, varied with the temperature, either intensified or weakened, but M.aeruginosa was always more competitive.关键词
铜绿微囊藻/斜生栅藻/温度/单独培养/混合培养/种间竞争Key words
Microcystis aeruginosa/ Scenedesmus obliquus/ temperature/ mono-culture/ mixed-culture/interspecific competition分类
农业科技引用本文复制引用
晁建颖,颜润润,张毅敏..不同温度下铜绿微囊藻和斜生栅藻的最佳生长率及竞争作用[J].生态与农村环境学报,2011,27(2):53-57,5.基金项目
国家水体污染控制与治理科技重大专项(2008ZX07101-007) （2008ZX07101-007）
国家重点基础研究发展计划(2008CB418103) （2008CB418103）
