Abstract
Grasslands have decreased markedly in urban areas; therefore, it is necessary to consider their utilization and management to conserve the species that live within them. In this study, we investigated wild mice on the Tama River floodplain and considered grassland conservation from a regional and local perspective. The results suggest that the distributions of Apodemus speciosus and Mus musculus were determined by various factors such as the presence of green areas and land use around the area, in addition to vegetation, utilization, and grass management of the flood plain. The distribution of Micromys minutus was affected by the size of the plant community, vegetation, and grass management for nest building. To conserve the habitat of M. minutus, it is necessary to systematically manage the grassland of the floodplain.
