长江科学院院报2017，Vol.34Issue(6)：39-44,6.DOI:10.11988/ckyyb.20161004
温度和光强对4种常见水华藻叶绿素荧光特性的影响
Effects of Temperature and Illumination on Chlorophyll Fluorescence Characteristics of Four Common Bloom Algae
摘要
Abstract
Characteristics of algal physiological ecology is important for researchers to explore the mechanism of algal bloom outbreak and forecast and prevent algal bloom.Four common bloom algae were taken as research objects,namely Stephanodiscus hantzschii,Cyclotella sp.,Scenedesmus obliquus,and Microcystis aeruginosa.The effects of temperature and illumination on the chl6rophyll fluorescence of the four bloom algae were studied by chlorophyll fluorescence technology.Results reveal that Stephanodiscus hantzschii has strong adaptability to low temperature with suitable temperature ranging from3 ℃ to 22 ℃,while high temperature could easily lead to thermal stress.In particular,under suitable temperature,its electron transport rate obviously increases with the increase of illumination,which indicates Stephanodiscus hantzschii has strong light protection and light utilization ability:Microcystis aeruginosa has good adaptability to high temperature with suitable temperature of 15 ～ 30 ℃,while blow 10 ℃ it will suffer from temperature stress,and its utilization efficiency of light energy improves with temperature rising.In addition,Cyclotella sp.also shows adaptability to high temperature,while low temperature (3 ～ 10 ℃) may cause growth retardation.In comparison,Scenedesmus obliquus displays a wider adaptation to temperature,and shows higher utilization efficiency of light energy and light quantum yield under certain temperature range (22 ～ 30 ℃).The results show the differences of physiological ecology characteristics of the four algae,and provide reference for the prediction,early warning and management of algal bloom.关键词
水华/藻类/冠盘藻/富营养化/叶绿素荧光特性Key words
water bloom/algae/Stephanodiscus/eutrophication/chlorophyll fluorescence characteristics分类
资源环境引用本文复制引用
许珍,殷大聪,陈进,许继军..温度和光强对4种常见水华藻叶绿素荧光特性的影响[J].长江科学院院报,2017,34(6):39-44,6.基金项目
国家自然科学基金项目(51279011) （51279011）
国家重点研发计划项目(2016YFC0502201) （2016YFC0502201）
湖北省自然科学基金项目(2016CFA092) （2016CFA092）
中央级公益性科研院所基金项目(CKSF2012041/SZ) （CKSF2012041/SZ）
