学术报告
报告题目:A model of algal growth depending on nutrients and inorganic carbon in a poorly mixed water column
报告人:史峻平(美国威廉玛丽学院)
报告时间:2022年5月18日(星期三)9:00-11:00
腾讯会议:114-173-137
参加人员:教师、研究生、本科生
报告摘要:A reaction-diffusion-advection model is proposed to describe the growth of algae depending on both nutrients and inorganic carbon in a poorly mixed water column. Nutrients from the water bottom and inorganic carbon from the water surface form an asymmetric resource supply mechanism for the algal growth. The existence and stability of semi-trivial steady state and positive steady state of the model are proved, and a threshold condition for the regime shift from extinction to survival of algae is established. The influence of environmental parameters on the vertical distribution of algae is investigated in the water column. It is shown that the vertical distribution of algae can exhibit many different profiles under the combined limitation of nutrients and inorganic carbon. This is a joint work with Jimin Zhang (Heilongjiang University) and Xiaoyuan Chang (Harbin University of Science and Technology).
报告人简介:史峻平,美国威廉玛丽学院(College of William & Mary)数学系主任, 教授。1990-93年南开大学学习,1998年毕业于美国杨百翰大学,获博士学位。主要研究方向为偏微分方程,动力系统,分歧理论,非线性泛函分析,生物数学。在偏微分方程,分歧理论方面的研究工作受到国际上广泛重视。在生物数学方向包括种群模型,生物化学反应,形态生成,生态系统稳定性等方面都有研究。曾任哈尔滨师范大学龙江学者讲座教授,山西大学百人计划讲座教授,主持参加美国国家科学基金会基金项目多项,主持组织国际学术会议20多次,在国际学术会议做大会报告/邀请报告100余次。担任多个国际知名SCI刊物编委,为100多种数学、物理、生物刊物审稿人。发表学术论文180余篇,被引用7000余次。