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Dynamics of a periodic stoichiometric model

发布时间:2019-11-01 作者: 浏览次数:
Speaker: 范猛 DateTime: 2019年11月3日(周日)上午10:00-11:00
Brief Introduction to Speaker:

 范猛,东北师范大学,教授。

Place: 六号楼二楼报告厅
Abstract:We develop a nonautonomous stoichiometric algal growth model incorporating a season-driven light intensity. We characterize the model dynamics by showing positive invariance, dissipativity, boundary dynamics, and internal dynamics. We use numerical simulations to uncover the impacts of the seasonal light intensity and the nutrient availability on the algal dynamics. We discuss two control methods, removing algae (RA) periodically and blocking nutrient (BN) input from rivers constantly, via our modeling approach. By comparison, the BN method is a more effective way to terminate algal bloom in Yellow Sea off China. The model dynamics can fit the Bohai Sea data well. Our model and analysis provide a possible explanation of seasonal algal bloom and give some measurements for controlling algal bloom in China’s coastal regions.