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Takashina Lab
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The lab uses mathematics to explore better ways to manage protected areas and fisheries resources.
AboutAbout the lab
Reconciling biodiversity with human activities
The Takashina Lab studies conservation biology, fisheries resource management, and theoretical ecology from a perspective that spans multiple disciplines.
Its central research keywords include protected areas and OECMs, harmonizing human activities with biodiversity conservation, institutional design for sustainable biological resource management, and co-management and community-based management.
Combining perspectives from ecology and socioeconomics, the lab investigates what outcomes decisions in ecosystem management produce, and aims to build frameworks that effectively achieve management goals.
The Graduate School of Frontier Sciences is a graduate school with no undergraduate programs, where students can pursue a wide range of research themes in an interdisciplinary and international environment.
Key terms
- OECM
- A site that is not a protected area but contributes to biodiversity conservation through local management. It counts toward international conservation targets.
- Population dynamics
- How the number of individuals of a given organism increases or decreases over time through birth, death, movement, and so on.
- Macroecology
- A field of ecology that examines patterns in the number and distribution of species across broad regions or the entire globe.
ResearchResearch themes
The lab seeks to clarify how to establish protected areas effectively and how to manage fisheries resources sustainably. It also conducts research in theoretical ecology, including the ecological and evolutionary mechanisms by which biodiversity arises and is maintained, and population dynamics.
*Illustrative imageSustainable Fisheries Resource Management
Overfishing is the greatest threat to sustainable fisheries. To understand how ecosystems respond to fisheries management at the ecosystem level, and to devise mechanisms that ease competition for catch, the lab uses ecological methods such as population dynamics modeling together with socioeconomic methods such as decision theory.
*Illustrative imageTerrestrial and Marine Protected Areas
Terrestrial and marine protected areas are increasing rapidly worldwide, but the lab asks whether they are always good for society. Because establishing protected areas is very costly, the lab seeks to clarify both their effects and cost-effective ways to establish them.
*Illustrative imageGlobal Biodiversity
Halting the loss of global biodiversity is an urgent challenge for society today. Drawing on knowledge from community ecology and macroecology, the lab builds ecosystem models to study the global-scale impact of human activities and effective approaches to conservation management.
*Illustrative imageMathematical Ecology
The lab tackles a wide range of topics in mathematical ecology, including ecosystems and population dynamics at various temporal, spatial, and ecological scales, such as age, role, and species, as well as sampling theory for ecological surveys.
MembersFaculty
The lab's members consist of faculty, doctoral students, and master's students.As of 2026
- Associate ProfessorNao TakashinaPublications ↗
VoicesStudent voices
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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: “Fish school (Unsplash)” Milada Vigerova mili_vigerova / CC0 (cropped)
- Sustainable Fisheries Resource Management: “Chalutier méditerranéen du Grau-d'Agde (Ifremer )” Isabelle Cheret / CC BY 4.0 (cropped)
- Terrestrial and Marine Protected Areas: “Great Barrier Reef ESA378130” European Space Agency / CC BY-SA 3.0 igo (cropped)
- Global Biodiversity: “Khao Yai, Thailand, Tropical rainforest” Vyacheslav Argenberg / CC BY 4.0 (cropped)
- Mathematical Ecology: “Lotka Volterra time” Hellingspaul / CC BY-SA 3.0 (cropped)
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