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Dynamical Analysis of a Nitrogen-Phosphorus-Phytoplankton Model

Author

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  • Yunli Deng
  • Min Zhao
  • Hengguo Yu
  • Yi Wang

Abstract

This paper presents a nitrogen-phosphorus-phytoplankton model in a water ecosystem. The main aim of this research is to analyze the global system dynamics and to study the existence and stability of equilibria. It is shown that the phytoplankton-eradication equilibrium is globally asymptotically stable if the input nitrogen concentration is less than a certain threshold. However, the coexistence equilibrium is globally asymptotically stable as long as it exists. The system is uniformly persistent within threshold values of certain key parameters. Finally, to verify the results, numerical simulations are provided.

Suggested Citation

  • Yunli Deng & Min Zhao & Hengguo Yu & Yi Wang, 2015. "Dynamical Analysis of a Nitrogen-Phosphorus-Phytoplankton Model," Discrete Dynamics in Nature and Society, Hindawi, vol. 2015, pages 1-8, February.
    • Handle: RePEc:hin:jnddns:823026
    DOI: 10.1155/2015/823026
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    Cited by:

    1. Zhao, Zhong & Luo, Chengguang & Pang, Liuyong & Chen, Ying, 2016. "Nonlinear modelling of the interaction between phytoplankton and zooplankton with the impulsive feedback control," Chaos, Solitons & Fractals, Elsevier, vol. 87(C), pages 255-261.

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