Welcome to FPD lab!!

Our group focuses on the population dynamics of marine organisms from the viewpoint of applying various mathematical techniques. Research in the group addresses a wide range of questions broadly concerning fisheries stock management, conservation ecology, and evolutionary ecology. Our research utilizes a wide range of modelling techniques, from the models for fisheries stock management (e.g., VPA and integrated models) to computer-intensive statistical methods (e.g., maximum likelihood estimation, bootstrap, hierarchical Bayesian modelling, and MCMC). Our approach also includes the modelling techniques established in theoretical biology, such as the matrix-population models, PDE-population models, individual-based models, optimality models, and quantitative genetics models. We contribute to both society and academia, by supporting numerical simulations for governmental stock management and by achieving multidisciplinary collaboration through statistical consulting for empirical studies, respectively.

Ongoing projects:

1. Stock evaluation/management by the Virtual Population Analysis
We study the statistical methodology to estimate population sizes and ecological parameters from fishery-derived, fragmental, noisy data, as well as to develop management procedures robust to environmental uncertainties. This project is closely connected with the political decision-making for fisheries on both domestic and international scales. [click to see details]

2. Estimation of census population size using neutral genetic information
This is a challenging study to estimate the wild population size of marine organisms. We employ a genetics-incorporated age-structured population model implemented on a supercomputer for establishing new methods for the next generation. This approach is really novel, and requires a high degree of skill for statistical modelling and writing computer algorithms. [click to see details]

3. Evolutionary ecology of marine organisms
In a mathematical sense, population models are closely-related to the models to describe the replicator dynamics or evolutionary dynamics. We pursue theoretical studies on the life history evolution and reproductive ecology of marine organisms. We already published several theoretical papers on the imporant issues about the evolutionary response of marine organisms to serious environmental change including the global waming and ocean acidification. [click to see details]

FPD Lab People

Kazuhiko Hiramatsu Kaz Hiramatsu, Ph.D.
Associate Professor [personal webpage]
E-mail: khiramatsu[at]
Atmosphere and Ocean Research Institute: Room 571
The University of Tokyo
Kashiwanoha 5-1-5, Kashiwa-shi,
Chiba 277-8564 Japan

Takahiro Irie Taka Irie, Ph.D.
Assistant Professor [personal webpage]
E-mail: irie[at]
Atmosphere and Ocean Research Institute: Room 570
The University of Tokyo
Kashiwanoha 5-1-5, Kashiwa-shi,
Chiba 277-8564 Japan

Graduate students and post-docs are anonyous for personal information protection.

Opportunities for MS and Ph.D Students
Prospective graduate students (MS or Ph.D) and post-docs with an interest in applying mathematical techniques to scientific studies on marine organisms are encouraged to contact Dr. Hiramatsu or Dr. Irie. The University of Tokyo also provides the information for applicants to our graduate course. To study with us, you need to choose Department of Aquatic Bioscience, Graduate School of Agricultural and Life Sciences for admission.

Opportunities for Post-Docs
We are always looking for talented post-docs with interests and experience in statistical modelling, mathematical modelling, computer programming and/or bioinformatics of marine organisms. Potential post-docs are encouraged to seek their own funding, but when available, grant funding may also provide post-doc support. JSPS also provides various types of oppotunities to young postdoctoral researchers through a financial assistance.

Go back to...
+ Atmosphere and Ocean Research Institute, The University of Tokyo
+ Graduate School of Agricultural and Life Sciences / Faculty of Agriculture, The University of Tokyo
+ Department of Aquatic Biosciences, GSALS, The University of Tokyo
+ Japan Society for the Promotion of Science