Dynamics of a toxicant-population model in a polluted river

讲座时间 Datetime: 2022年6月24日，星期五， 19:00-20:30

地点 Venue: 腾讯线上会议：878381380

主持人 Host：唐德

报告人 Speaker: 周鹏

单位 Affiliation:上海师范大学

报告摘要 Abstract:

One reason why polluted water is the growing global concern is because it persists to pose threats to the health of aquatic life. To study the effects of environmental toxicants on population dynamics in polluted rivers, we develop a process-oriented model that describes the interaction between a population and a toxicant in an advective environment. We explore the existence and stability of steady states based on the analysis of eigenvalue problems and the theory of monotone semiflows, which yields sufficient conditions that lead to population persistence or extinction. Some numerical results are also presented to show the interplay between several factors on the persistence and spatial distribution of the population.