10月18日 Jian Shen:The Importance of Physical Transport Processes affecting Origins of Harmful Algal Blooms and Harmful Algal Bloom Simulation(68周年校庆系列学术报告)

来源:pt真人平台 时间:2019-10-10浏览:14设置


讲座题目:The Importance of Physical Transport Processes affecting Origins of Harmful Algal   Blooms and Harmful Algal Bloom Simulation

主讲人:Jian Shen  教授

主持人:贾建军  教授

开始来源:pt真人平台 时间:2019-10-18 14:00:00

讲座地址:河口海岸大楼A204会议室

主办单位:河口海岸科学研究院

 

报告人简介:

Dr. Jian Shen is a research professor of   Virginia Institute of Marine Science, College of William and Mary. His   research interests are Estuarine circulation, Transport timescale; numerical   model simulations of hydrodynamics and water quality in estuaries and coastal  sea, storm surge and inundation predictions, inverse modeling of estuarine   water quality, and numerical modeling of watershed processes. He is also a   member of American Geophysical Union.


报告内容:

The effects of physical transport processes on   the initiation of harmful algal blooms (HABs) in estuaries were investigated   through both mathematical model analysis and numerical model experiments.   This study highlights the importance of the transport processes on HAB and interactions   of physical and biological processes. The theoretical analysis suggests that the differential flushing effect at different waterbodies due to complex   geometry is one of the dominant factors causing inhomogeneous distribution of   algal density during HAB initiation. A HAB model has been developed for the   tidal James River, which incorporates HAB behaviors such as mixotrophic   growth, swimming behavior, cyst germination, and grazing suppression. Model   simulations confirm the theoretical results and model results suggest that   the mixotrophic growth is important to maintain a high growth rate of   Cochlodinium polykrikoides in this region. Model results also show that both   temperature and the flushing effect are the two dominant factors controlling   the interannual variability in the timing of initiation of C. polykrikoides   bloom in the Lafayette River, while the transport processes and unique  circulation pattern in the James River plays a dominant role for HAB in the   James River.

 


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