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Numerical simulation for impacts of hydrodynamic conditions on algae growth in Chongqing Section of Jialing River, China

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  • Long, Tian-yu
  • Wu, Lei
  • Meng, Guo-hu
  • Guo, Wei-hua

Abstract

Hydrodynamic conditions are important factors for planktonic algae growth, through introducing two parameters which express the optimal velocity and the velocity range for planktonic algae growth, a new velocity factor was put forward for the formula of growth rate. Therefore, the two-dimensional unsteady ecological dynamic model for algae growth was established to analyze the effects of hydrodynamic conditions on algae growth in Chongqing Reach of Jialing River in China. The temporal and spatial distribution of Chlorophyll-a (Chl-a) concentration was simulated numerically for various water levels, under climate conditions in period of high frequency for algae blooms of Three Gorges Reservoir and nutrition status at present in the research reach. The corresponding locations and areas of likely algae blooms were analyzed and forecasted. The results showed that about 0.04ms−1 was the optimal velocity for algae growth, and the occurrence of algae blooms in large scale is almost impossible because of relatively high water flow velocity for Jialing River.

Suggested Citation

  • Long, Tian-yu & Wu, Lei & Meng, Guo-hu & Guo, Wei-hua, 2011. "Numerical simulation for impacts of hydrodynamic conditions on algae growth in Chongqing Section of Jialing River, China," Ecological Modelling, Elsevier, vol. 222(1), pages 112-119.
    • Handle: RePEc:eee:ecomod:v:222:y:2011:i:1:p:112-119
    DOI: 10.1016/j.ecolmodel.2010.09.028
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    References listed on IDEAS

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    1. Zhang, Hongyan & Culver, David A. & Boegman, Leon, 2008. "A two-dimensional ecological model of Lake Erie: Application to estimate dreissenid impacts on large lake plankton populations," Ecological Modelling, Elsevier, vol. 214(2), pages 219-241.
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    1. Yi Tan & Jia Li & Linglei Zhang & Min Chen & Yaowen Zhang & Ruidong An, 2019. "Mechanism Underlying Flow Velocity and Its Corresponding Influence on the Growth of Euglena gracilis , a Dominant Bloom Species in Reservoirs," IJERPH, MDPI, vol. 16(23), pages 1-15, November.
    2. Tianfu He & Yun Deng & Youcai Tuo & Yanjing Yang & Naisheng Liang, 2020. "Impact of the Dam Construction on the Downstream Thermal Conditions of the Yangtze River," IJERPH, MDPI, vol. 17(8), pages 1-14, April.
    3. Zhao, Xiaodong & Zhang, Hongjian & Tao, Xiaolei, 2013. "Predicting the short-time-scale variability of chlorophyll a in the Elbe River using a Lagrangian-based multi-criterion analog model," Ecological Modelling, Elsevier, vol. 250(C), pages 279-286.
    4. Zhiyong Liu & Chenfeng Liu & Yuyong Hou & Shulin Chen & Dongguang Xiao & Juankun Zhang & Fangjian Chen, 2013. "Isolation and Characterization of a Marine Microalga for Biofuel Production with Astaxanthin as a Co-Product," Energies, MDPI, vol. 6(6), pages 1-14, May.
    5. Yao, Jianyu & Xiao, Peng & Zhang, Yunhuai & Zhan, Min & Cheng, Jiangwei, 2011. "A mathematical model of algal blooms based on the characteristics of complex networks theory," Ecological Modelling, Elsevier, vol. 222(20), pages 3727-3733.
    6. Islam, Md. Nazrul & Kitazawa, Daisuke & Kokuryo, Naoki & Tabeta, Shigeru & Honma, Takamitsu & Komatsu, Nobuyuki, 2012. "Numerical modeling on transition of dominant algae in Lake Kitaura, Japan," Ecological Modelling, Elsevier, vol. 242(C), pages 146-163.
    7. Xu, Ben & Li, Peiwen & Waller, Peter, 2014. "Study of the flow mixing in a novel ARID raceway for algae production," Renewable Energy, Elsevier, vol. 62(C), pages 249-257.

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