We handle everything from plants to animals and microorganisms, from their intra-species and inter-species relationships to ecosystems and the global environment. The specific research contents are as follows.

1. Research to elucidate ecological processes from the physiological and ecological characteristics at the organ and individual level using trees grown in the field and seedlings grown in experimental systems (Ishida)

2. Research to elucidate plant phenology, reproductive ecology, phenotypic plasticity, and local adaptation by molecular biological techniques (Kudoh)

3. Research to elucidate the interaction between insects and plants, between plants and plants, and between insects and insects by chemical ecological methods (Takabayashi)
5. Research to elucidate the dynamics and properties of populations and communities by theoretical methods while taking into account the evolutionary aspects of living organisms (Yamauchi)

4. Research to clarify the diversity of interactions between organisms and their maintenance mechanism using molecular methods such as next-generation sequencing (Honjo)

5. Research to clarify the evolutionary patterns of organisms and their functional roles in ecosystems through experimental investigations of various biotic interactions.（Yamawo）

6. Research to explore the function and evolutionary process of diverse morphology (especially leaf morphology) of wild plants, mainly from the perspective of biological interactions. (Higuchi)