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Other departments in School of Agriculture ›Faculties at Hokkaido University ›

Rieko Urakawa, Associate Professor
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Associate Professor Rieko Urakawa studies how environmental change alters material cycling in forest ecosystems. Using chemical and isotope analysis of precipitation, stream water, soil, and rock, the lab investigates the biogeochemical processes that shape water quality and soil. By analyzing the wide-area distribution and long-term changes of these properties, the lab aims to clarify regional characteristics and how forest ecosystems respond to environmental change.

Mutumi Nomura, Assistant Professor
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Assistant Professor Mutumi Nomura studies how water circulates within forest ecosystems. Focusing mainly on northern Hokkaido and polar regions, the lab examines the water balance of watersheds and the mechanisms by which precipitation flows out into rivers. The research centers on the snow accumulation and snowmelt mechanisms characteristic of northern regions.

Mitsuru Ohira, Assistant Professor
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Assistant Professor Mitsuru Ohira studies how forests influence stream environments and the assembly of stream biological communities. The lab examines how disturbance, succession, and management of forests on hillslopes, in riparian zones, and across watersheds change the supply of water, sediment, and organic matter to streams, and how organisms respond. Alongside how a forest's influence spreads downstream through the stream network, the lab also considers watershed management.

Naoki Agetsuma, Professor
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The Agetsuma Lab (nicknamed the "Kedamono" [Beast] Lab) studies mammal ecology in relation to forest environments. The lab aims to clarify how wild animals adapt to seasonal and year-to-year natural variation and to disturbance from human activity. It covers a wide range of animals, from large ones such as deer to medium-sized ones such as raccoon dogs, raccoons, and monkeys, as well as bats. The main study sites are Yakushima and Hokkaido. The lab asks anyone considering graduate school to be sure to consult Professor Agetsuma before taking the entrance exam.

Masahiro Nakamura, Professor
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The Nakamura Lab studies forest community ecology, centered on interactions between plants and insects. In forests in Tomakomai, Nakagawa, and Nayoro in Hokkaido and Kumano in Wakayama, the lab investigates responses to climate change such as global warming and typhoons, as well as the pest-suppressing function of biodiversity. The basic approach is to find patterns in biological communities through multi-site observation and long-term monitoring, then confirm the mechanisms behind them with manipulative field experiments. The lab is also in charge of a program in the Forest Research Field Training, which Hokkaido University Forests offers to undergraduates so that they can experience research before entering graduate school.

Osamu Kishida, Professor
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The Kishida Lab is an animal ecology lab that studies predator–prey relationships and life history strategies of animals, mainly in the research forests of Hokkaido University. Ponds dug in the research forest make large-scale manipulative field experiments possible, and students develop their own research themes. The lab is based mainly at the Wakayama Research Forest in Kozagawa Town, Wakayama Prefecture. Graduate students basically live in Kozagawa Town, but depending on their research theme, they can also be based at a research forest in Hokkaido, such as the Tomakomai Research Forest.

Jun Uetake, Associate Professor
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Associate Professor Jun Uetake studies how microbial communities are involved in material cycles and global environmental change. Invisible to the eye, microbes live not only in soil and rivers but also in seemingly lifeless environments such as the air and snow cover. The research combines field work with genetic experiments and chemical analysis in the laboratory. Associate Professor Uetake is affiliated with the Hiyama Research Forest and Tomakomai Research Forest of the Field Science Center for Northern Biosphere.

Minoru Kasada, Assistant Professor
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Assistant Professor Minoru Kasada studies how changes in the relationships among organisms affect their abundance and diversity. Interactions among organisms (biotic interactions) are constantly changing with time and circumstances. Humans are regarded as one species among living things, and the research also considers how people and other organisms can coexist and prosper together under limited resources. Assistant Professor Kasada is affiliated with the Uryu Research Forest of the Field Science Center for Northern Biosphere.

Toshiya Yoshida, Professor
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Professor Toshiya Yoshida studies forest management practices designed with ecosystem conservation in mind. Making use of timber resources is important for a sustainable society, but forest management practices such as logging are sometimes regarded as degrading forest ecosystems. The lab analyzes the structure, succession, and diversity of forests where management has been carried out, aiming to identify management methods that are compatible with ecosystem conservation. The research forest has forests with a variety of histories, along with technical staff who put forest management into practice.

Karibu Fukuzawa, Associate Professor
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Associate Professor Karibu Fukuzawa studies the dynamics of forest roots and the environmental functions of forests. Through fieldwork and chemical analysis, the lab traces the flow of materials and evaluates the environmental functions of forests. Focusing especially on the role of roots at the boundary between plants and soil, the lab has found, for example, that the amount of root production rivals the amount of leaf litter. In the vast Teshio Experimental Forest, which consists mainly of natural forest, the lab also studies how environmental change and anthropogenic disturbance affect the environmental functions of forests.
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