**Author details**

Yukihiko Hashimoto1,2\* and Tomohito Anrui1,3

\*Address all correspondence to: yukih41@nifty.com

1 Oze Preservation Foundation, Maebashi-Shi Gunma, Japan

2 Faculty of Environmental and Information Sciences, Yokkaichi University, Maebashi-Shi Gunma, Japan

3 Katashina Moutain and Forest Academy, Maebashi-Shi Gunma, Japan
