Chih-hao (Zac) Hsieh is a Professor of Oceanography with a joint appointment at the Institute of Ecology and Evolutionary Biology at National Taiwan University. He served as Director of the Institute of Oceanography from August 2020 to July 2023.

Chih-hao Hsieh’s academic journey began with an MS/BA in Zoology from National Taiwan University, followed by a PhD in Oceanography from the University of California-San Diego. Since joining the faculty of National Taiwan University in 2007, he has played a major role in research and teaching.

Chih-hao Hsieh’s research prowess is evidenced by his authorship of over 130 research articles, several of which have been published in prestigious journals such as Nature and Science. His research focuses on developing robust methods for time series analysis in dynamical systems, with applications in environmental management, economics, epidemiology, ecology, medical sciences, and neural sciences. In addition, he conducted field sampling and experiments in aquatic systems to study ecosystem dynamics.

We conduct field sampling in the oceans and lakes. We carry out sample analysis using imaging instruments, microscopy, molecular biology such as high-troughput sequencing, chemical and biochemical analysis. We developed bioinformtics pipeline as well as advanced statistical methods for data analysis. We also engage in developing mathematical models. Our objectvies are to achieve understandings of ecosystem processes and the undelying mechanisms.