Growth characteristics of two bloom‐forming synurophytes (Mallomonas elongata and Synura petersenii) at different nitrate and phosphate concentrations |
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| Authors: | Kyung Lak Lee Jin Hee Kim Ho‐Sung Yoon Han Soon Kim |
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| Institution: | Dept of Forensic Medicine, National Inst. of Scientific Investigation, KR‐158‐707 Seoul, Korea |
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| Abstract: | Two dominant planktonic bloom‐forming algal species in a small shallow eutrophic pond were identified as Mallomonas elongata and Synura petersenii by electron microscopy. Their growth requirements were investigated as uni‐algal cultures in a laboratory study. The maximum population growth and maximum growth rate of M. elongata occurred at concentrations of 24 μM nitrate (NO3) and 5 μM phosphate (PO4) at a temperature of 15°C and a pH of 6. Synura petersenii grew maximally and exhibited the highest growth rate at a NO3 concentration of 24 μM and a PO4 concentration of 2 μM. Mallomonas elongata and S. petersenii had similar nutrient requirements for optimum growth, suggesting that the biomass of these two species can be controlled by nutrient gradients. |
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