Department of Environmental Life Sciences
Division of Conservation Biology

Conservation Biology 分野


How and why did biological diversity evolve as it has? And how is that diversity maintained? By answering these questions, we can learn the value and functions of biological diversity and ecosystems. Gaining a deeper understanding of the mechanisms of evolution and the functions of ecosystems will lead to the development of methods for predicting the future of ecosystems and properly maintaining them. Understanding the value and functions of ecosystems and biological diversity, developing methods to protect these, and advancing appropriate conservation activities are the goals of the Laboratory of Conservation Biology.


satoshi chiba
Professor Satoshi Chiba
  • Species diversity creation and maintenance mechanism based on a sea and island ecological model
  • Understanding the evolutionary process and speciation mechanism using mollusks
Associate Professor Shuichi Shikano
  • Food web analysis in Western Siberian wetland ecosystems
  • Bacterial community structure analysis of lake ecosystems
  • Host-parasite relationship using stable isotopes

Thesis Titles

Master Degree

The effects of the mucus coating a land snail love-dart on reproductive behaviour in mated individuals. (2013)
Rat predation on native and nonnative land snails in Ogasawara, and its management implications. (2013)
Dynamics of evolutionary radiation under neutrality(2013)

Ph.D. Degree

Phenotypic divergence and convergence via ecological adaptation in snails(2013)

A Student’s View


Yuta Morii 


Undergraduate University and Department

Faculty of Science, Shinshu University

Research Subject

Understanding the diversity and maintenance mechanism of husk morphosis of northern land shellfish

Freedom and equality. That’s how I describe our lab. First and foremost, you have freedom in all research activities. If you set your mind on something, you can decide everything by yourself from setting the research theme to the methods you will employ. Conversely, you can also diligently conduct research based on meticulous discussions with professors and other lab members. Everything is left to the discretion of the individual. Of course, freedom absolutely comes with responsibility, but even so, I give our current system high marks because it enables us to decide things on our own taking full responsibility and not relying on anyone else for anything and, in doing so, enhancing our autonomy. Next is equality amongst all lab members. I believe that the scientific world does not need any hierarchy. If someone demonstrates greater talent than you, it is important to respect and sincerely learn from that person. Here, there are no hierarchic relations, so it makes no difference if a student was just admitted, or if a professor has some lofty title. There is no doubt that this lab is constituted as such. From academic debates to funny jokes, both professors and students joust freely and vigorously on a daily basis. The result of this is, without noticing it, your theoretical conceptualization capabilities become sharp. This is really fantastic. I don’t think there’s a more meaningful experience out there for a graduate student. Anyone who aims to become a researcher won’t find a better environment anywhere else, bar none. Students who will go into the workplace are bound to learn many significant things from this lab, all depending on their motivation. Everything depends on motivation. It will determine whether you get nothing, or everything. That’s the kind of lab this is. So, what are you looking for in a graduate school?