Overfishing is the main threat to sustainable fisheries. To ensure sustainability, we need a solid understanding of ecosystem-level response to fisheries management and system to mitigate the race-to-fish, competitive fishing. We tackle this problem through ecological (e.g., modeling population dynamics) and socioeconomic (e.g., decision theory) approaches.

Keywords: Ecosystem-based fisheries management, maximum sustainable yields, co-management

The establishment of terrestrial and marine protected areas is increasing rapidly around the world. It seems good to do so for conservation, but is it always okay for society? Establishing a protected area often causes enormous costs and requires a cost-effective strategy for establishment. In addition to the benefits of protected areas, we also strive to understand effective ways to establish protected areas.

Keywords: Spatial conservation planning, SLOSS, 30by30

Bending the curve of Earth's biodiversity loss is a pressing issue in today's society. A comprehensive understanding of global biodiversity is necessary to develop effective conservation strategies. We are using our knowledge of community ecology and macroecology to develop ecosystem models and study the effects of human activities at the global level and effective conservation management approaches.

Keywords: Species area relationship, species geographioc range, urbanization

We are also interested in a wide range of topics in theoretical ecology, including population dynamics at various focal scales such as state, role, and species; ecological sampling; and optimal spawning timing for fish.

Keywords: Lotka-Volterra equation, McKendrick–von Foerster equation, spatial point processes