Ryuichi Kumata

The paper analyzes how competition, ecological drift, and immigration shape community composition distributions, showing that competition can lead to species dominance even when deterministic models predict coexistence.

The paper develops an evolutionary epidemiology model to study how pathogens adapt to seasonal environments, revealing two regimes of seasonal timing adaptation.

This study extends an eco-cultural model to analyze how spatial bottlenecks affect cultural and ecological spread, finding that cultural waves can be blocked by narrow corridors while ecological waves are unaffected.

This study shows spatial structure can either promote or hinder the spread of cooperative anti-CRISPR phages, depending on host and phage efficacy.