报告人：史峻平 美国威廉玛丽学院教授

报告时间：12月22日9:00

报告地点：腾讯 ID：311 888 153

主办单位：数学与统计学院

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报告摘要：Various mathematical models describing vertical distribution of phytoplankton in the water column will be introduced. In particular, we will introduce a new mathematical model connecting epilimnion and hypolimnion to describe the growth of phytoplankton limited by nutrients and light in a stratified lake. Stratification separates the lake with a horizontal plane called thermocline into two zones : epilimnion and hypolimnion. The epilimnion is the upper zone which is warm (lighter) and well-mixed; and the hypolimnion is the bottom colder zone which is usually dark and relatively undisturbed. The growth of phytoplankton in the water column depends on two essential resources: nutrients and light. The critical thresholds for settling speed of phytoplankton cells in the thermocline and the loss rate of phytoplankton are established, which determine the survival or extirpation of phytoplankton in epilimnion and hypolimnion. This is a joint work with Jimin Zhang (Heilongjiang University), Jude Kong (York University) and Hao Wang (University of Alberta).

史峻平，美国威廉玛丽学院(College of William & Mary)数学系主任, 教授。1990-1993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。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80多种数学、物理、生物刊物审稿人。发表学术论文160余篇，其中被SCI收录140余篇，被SCI杂志引用3000余次（它引2700余次）。