时间：2018年6月1日下午15:30-17:00

地点：格物楼503

题目：Dynamical Modeling of Submerged Macrophyte in Lake

摘要：A four-dimensional dynamic model is formulated to characterize the interactions among phytoplankton, submerged macrophyte, zooplankton, and fish in lake. The predation relationship is modeled by Beddington-DeAngelis functional responses derived from the classical Holling time budget arguments. Qualitative analyses of the global dynamics including but not limited to bistable and chaotic phenomena. We discuss the methods of biological control used to restrain the increase of phytoplankton and explore the refuge effect of macrophyte on zooplankton. Our analytical and simulation results suggest that, both the refuge constant and the density of the macrophytes are two key factors working on refuge effects, macrophyte properly might achieve the purpose of controlling algae growth.

范猛教授主页：http://js.nenu.edu.cn/teacher/index.php?zgh=1998900016