应002资讯网微分方程与动力系统课题组邀请，加拿大阿尔伯塔大学Hao Wang教授作客【致敬百年】微分方程与动力系统云端专题讲坛，欢迎感兴趣的师生参加！

【报告题目】：Multi-scale and qualitative analysis of a stoichiometric algae model in the absence or presence of bacteria

【报告时间】：2020年6月18日，上午9：00-10:30

【报告平台】：zoom

点击链接直接加入会议：https://zoom.com.cn/j/96620108294

【会议ID】：966 2010 8294

【报告摘要】：Algal blooms are becoming a global concern due to the increasing prevalence of eutrophication. Often, algae and bacteria interact, within the well-mixed epilimnion, in a loose commensalistic way. Here we develop and analyze stoichiometric models for algal dynamics and for bacteria-algae dynamics. The algae-only dynamics exhibit rich transient behavior, and the driving biological mechanisms are studied and understood via a multiple time-scale analysis. We further perform global qualitative analysis of both models. There are three dynamical scenarios determined by the basic reproductive numbers of algae and bacteria. We use these models to make specific predictions about how the relative balance of algae and bacteria should change in response to varied nutrient and light availability. The bacteria-algae model successfully reproduces empirical respiration data. Competition of bacterial strains with low or high nucleic acid contents will be briefly discussed.

【报告人主页】：http://www.math.ualberta.ca/~hwang/