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黄启华教授报告会

  发布日期:2019-06-03  浏览量:363


报告题目: R0 analysis of a benthic-drift model for a stream population

报 告 人:黄启华(西南大学教授)

报告时间:201966日下午16:30

报告地点:磬苑校区澳门赌搏网站大全H306

报告摘要: One key issue for theory in stream ecology is how much stream flow can be changed while still maintaining an intact stream ecology, instream flow needs (IFNs), the study of determining IFNs is challenging due to the complex and dynamic nature of the interaction between the stream environment and the biological community. We develop a process-oriented benthic-drift model that links changes in the flow regime and habitat availability with population dynamics. In the model, the stream is divided into two zones: drift zone and benthic zone, and the population is divided into two interacting compartments: individuals residing in the benthic zone and individuals dispersing in the drift zone. We study the population persistence criteria, based on the net reproductive rate R_0 and on related measures. We develop new theory to calculate these quantities and use them to investigate how the various flow regimes, population birth rate, individual transfer rates between zones, and river heterogeneity affect population persistence. The theory developed here provides the basis for effective decision-making tools for water managers.

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专家概况:黄启华,博士,教授,博士研究生导师。20118月在美国University of Louisiana at Lafayette 获得应用数学博士学位。20118月至20166月在加拿大 University of Alberta 生物数学中心从事博士后研究工作,主要合作导师为 Mark Lewis 教授 (加拿大皇家科学院院士,Senior Canada Research Chair in Mathematical Biology)20166月通过西南大学引进人才“聚贤工程”计划被特别评聘为教授,并于20169月到西南大学数学与统计学院工作。主要研究方向为生物数学、偏微分方程和数值分析。科研成果主要发表在应用数学期刊 SIAM Journal on Applied Mathematics, SIAM Journal on Applied Dynamical Systems 生物数学期刊 Journal of Mathemtical Biolog, Bulletin of Mathematical Biology, Mathematical Biosciences 等,以及理论生态学期刊 Theoretical Ecology, Journal of Theoretical Biology 等。其中2017年发表在 SIAM Journal on Applied Mathematics 上题为A hybrid continuous/discrete-time model for invasion dynamics of zebra mussels in rivers”的论文被SIAM News Associate Editor 专门撰文进行了报道和评论。目前正主持国家自然科学基金面上项目、重庆市留学人员回国创新支撑计划重点项目各一项。


 

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