Abstract
Many introductive monitoring studies about ecological corridors had been reported just after construction of corridors. However, it is necessary to inspect effects for habitats from a long-term point of view. This study intended to grasp effects of the bridge for animals at the habitat of Japanese squirrel, Sciurus lis for eight years after construction. We investigated the habitat site condition and the use of the bridge for animals using a video camera. As a result, the bridge for animals has been used after having passed for eight years, and it became clear to have function as a corridor of the habitat. The function as a corridor is for daily trip and seasonal trip. Therefore it was supposed that the bridge for animals was effective in avoiding extinction of the Japanese squirrel population in this area.
