Effects of Water Flow on Growth of the Microcystis aeruginosa in early Summer and Autumn

Abstract:

The experiment was conducted by small perspex ring groove, which generated infinitely long water flow, under axenic condition and constant temperature and light, to understand the effects of water flow on Microcystis aeruginosa growth in early summer and autumn raw water. The results showed that the algae growth was promoted and the specific growth rate was accelerated by water flow. The maximum biomass of M. aeruginosa in autumn raw water was higher than in early summer raw water at every flow rate. The optimum flow rate of M. aeruginosa in early summer and autumn raw water were 25 cm·s^-1 and 35cm·s^-1, respectively. The phenomenon may be the interaction of the colloid produced by death and decomposition of algae, and colony formation in M. aeruginosa under fluid motion. Therefore, The decomposition and morphology of Microcystis have an important role to growth and reproduction of algae, the results provided the scientific basis for revealing algal blooms.

• Periodical: Advanced Materials Research (Volumes 726-731)
• Pages: 3934-3937
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.726-731.3934
• Online since: August 2013
• Authors: Lin Li*
• Keywords: Autumn Raw Water, Early Summer Raw Water, Flow Rate, Microcystis aeruginosa

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