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Animal Ecology-Agetsuma Lab
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The lab studies how wild mammals such as deer adapt to changes in forests and to human impact.
AboutAbout the lab
Mammal ecology through the lens of forests
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.
Key terms
- Disturbance
- An event, such as a typhoon, logging, or hunting, that greatly changes the environment or the numbers of living things
- Individual identification
- Telling individual animals apart and recording them one by one, which makes it possible to follow each animal's behavior and life over a long period
- Geographic information systems (GIS)
- A system that overlays location information on maps to analyze things such as the relationship between the distribution of organisms and their environment
ResearchResearch themes
The lab studies mammal ecology in relation to forest environments that vary over time and place. Through field experiments and monitoring, it also seeks to clarify the roles mammals play in forest ecosystems.
*Illustrative imageSocial ecology of the Japanese sika deer
The lab identifies individual wild deer living in forests and studies their social relationships through behavioral observation. On Yakushima, identified individuals are observed over the long term to collect data such as birth rates and survival rates.
*Illustrative imageResource use by forest mammals
Many camera traps are set up in forests, and the lab uses geographic information systems (GIS) to analyze which habitats deer, raccoon dogs, raccoons, and other animals favor, and how they are affected by habitat disturbance and by hunting and culling. It also studies relationships between species.
*Illustrative imageField experiments manipulating deer density
Since 2004, the lab has been running a field experiment in the Mizunara oak forest of the Tomakomai Experimental Forest that manipulates deer density and plant productivity. It has examined effects on understory plants, trees, soil fauna, birds, and arthropods (joint research with the Tomakomai Experimental Forest group).
*Illustrative imageConservation of natural ecosystems and wildlife management
Using historical records, the lab estimates animal populations and vegetation from before 1960 to consider conservation goals. It is also examining how to set scientifically measurable conservation goals and carry out countermeasures adaptively.
MembersFaculty
- ProfessorNaoki Agetsuma
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Yakushima Deer 01” Chris 73 / CC BY-SA 3.0 (cropped)
- Social ecology of the Japanese sika deer: “YakuSika in Japan 001” Yosemite / CC BY-SA 3.0 (cropped)
- Resource use by forest mammals: “Ezo Tanuki Nyctereutes procyonoides albus” harum.koh / CC BY-SA 2.0 (cropped)
- Field experiments manipulating deer density: “Kurodake Deer” (WT-en) Jpatokal at English Wikivoyage / CC BY-SA 3.0 (cropped)
- Conservation of natural ecosystems and wildlife management: “Cape Ochiishi and Groups of Ezo-deer 1” 京浜にけ / CC BY-SA 3.0 (cropped)
- Related lab (Ecosystem Function Lab (Takagi)): “Sunlight - panoramio (4)” Babiesan / CC BY-SA 3.0 (cropped)
- Related lab (Regional Resource Management Lab): “Abies sachalinensis, Gora Lopatina, Sakhalin” User:Lupus-sapiens / CC0 (cropped)
- Related lab (Ecosystem Function Lab): “Teshio River2” 河川一等兵 / CC BY-SA 4.0 (cropped)
- Related lab (Biodiversity Lab (Uetake)): “Taylor Glacier, cryoconite hole” Peter Rejcek, NSF / Public domain (cropped)
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