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Article

Characteristics of Fluorescence Spectra, UV Spectra, and Specific Growth Rates during the Outbreak of Toxic Microcystis Aeruginosa FACHB-905 and Non-Toxic FACHB-469 under Different Nutrient Conditions in a Eutrophic Microcosmic Simulation Device

1
College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China
2
National and Local Joint Engineering Research Center of Ecological Treatment Technology for Urban Water Pollution, Department of Environmental Science, Wenzhou University, Wenzhou 325035, China
*
Authors to whom correspondence should be addressed.
Water 2020, 12(8), 2305; https://doi.org/10.3390/w12082305
Received: 26 June 2020 / Revised: 6 August 2020 / Accepted: 14 August 2020 / Published: 17 August 2020
(This article belongs to the Special Issue Algae: Indices of Water and Ecological Quality)
Microcystis aeruginosa is the dominant alga forming cyanobacteria blooms, the growth of which is limited by available nutrients. Thus, it is necessary to study cyanobacteria blooms and explore the growth of Microcystis aeruginosa under different nutrient conditions. In this paper, we take Microcystis aeruginosa, including toxic Freshwater Algae Culture of Hydrobiology Collection (FACHB)-905 and non-toxic FACHB-469 strains, into account. The strains were cultured using a simulation device under different nutrient conditions. Ultraviolet spectra, three-dimensional fluorescence spectra, and kinetic parameter indicators of the two species are studied. Compared to FACHB-469, the results show that the specific growth rate of FACHB-905 is much higher, in particular, FACHB-905 is the dominant species under low nutrient conditions. Furthermore, the UV spectral characteristics indicate that the molecular weight of dissolved organic matter in the culture tank of toxic FACHB-905 is greater than that of FACHB-469. Additionally, the humification index of toxic FACHB-905 is slightly higher as well, which suggests that it is more stable in the presence of dissolved organic matter during blooms. Therefore, the toxic Microcystis strain is more likely to become the dominant species in water blooms under lower eutrophic conditions and water blooms formed by the toxic Microcystis strain may be more difficult to recover from. View Full-Text
Keywords: cyanobacteria blooms; Microcystis aeruginosa; ultraviolet spectra; three-dimensional fluorescence spectra; specific growth rate cyanobacteria blooms; Microcystis aeruginosa; ultraviolet spectra; three-dimensional fluorescence spectra; specific growth rate
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MDPI and ACS Style

Wang, Q.; Pang, W.; Ge, S.; Yu, H.; Dai, C.; Huang, X.; Li, J.; Zhao, M. Characteristics of Fluorescence Spectra, UV Spectra, and Specific Growth Rates during the Outbreak of Toxic Microcystis Aeruginosa FACHB-905 and Non-Toxic FACHB-469 under Different Nutrient Conditions in a Eutrophic Microcosmic Simulation Device. Water 2020, 12, 2305. https://doi.org/10.3390/w12082305

AMA Style

Wang Q, Pang W, Ge S, Yu H, Dai C, Huang X, Li J, Zhao M. Characteristics of Fluorescence Spectra, UV Spectra, and Specific Growth Rates during the Outbreak of Toxic Microcystis Aeruginosa FACHB-905 and Non-Toxic FACHB-469 under Different Nutrient Conditions in a Eutrophic Microcosmic Simulation Device. Water. 2020; 12(8):2305. https://doi.org/10.3390/w12082305

Chicago/Turabian Style

Wang, Qi, Wenjing Pang, ShuJie Ge, Hengguo Yu, Chuanjun Dai, Xianfeng Huang, Jun Li, and Min Zhao. 2020. "Characteristics of Fluorescence Spectra, UV Spectra, and Specific Growth Rates during the Outbreak of Toxic Microcystis Aeruginosa FACHB-905 and Non-Toxic FACHB-469 under Different Nutrient Conditions in a Eutrophic Microcosmic Simulation Device" Water 12, no. 8: 2305. https://doi.org/10.3390/w12082305

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