Title: Interspecific competition among Cyanophyta, Chlorophyta and Diatom in response to pulse supply of nitrate

Authors: Yang Su Wen; Wang Sheng Rui; Wang Hong Mei; Li Jing Yao; Zhang Pu Qing

Addresses: Research Center of Lake Environment, Chinese Research Academy of Environment Sciences, Beijing 100012, China ' Research Center of Lake Environment, Chinese Research Academy of Environment Sciences, Beijing 100012, China ' Environment and Health Department, Chinese Research Academy of Environment Sciences, Beijing 100012, China ' School of Environment, Northeast Forestry University, Haerbin 150040, China ' School of Environment, Northeast Forestry University, Haerbin 150040, China

Abstract: In summer, Cyanobacteria, Chlorococcalesa and Diatom occupy 99% of total phytoplankton biomass in Taihu Lake, China. Nitrogen plays an important role toward shaping that structure of phytoplankton. Three typical species were chosen to investigate the competing relationship among those three phylum by the nitrate dynamic experiments and supply experiments. Five growth parameters of Microcystis aeruginosa, Scenedesmus quadricauda and Cyclotella sp. in Monod, Droop models based on Tilmans' R* rule were calculated, respectively. The results obtained help in recognising actual waterbloom levels in lakes.

Keywords: interspecific competition; Cyanophyta; Chlorophyta; Diatom; nitrate nitrogen; phytoplankton biomass; China; water bloom levels; lakes; algal bloom.

DOI: 10.1504/IJEWM.2012.048148

International Journal of Environment and Waste Management, 2012 Vol.10 No.1, pp.13 - 24

Published online: 13 Dec 2014 *

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