Rikuto Sekine², *Tsuyoshi Hattanji¹, Takahisa Furuichi³, Yasushi Tanaka⁴, Shoji Doshida⁵, Takuro Ogura⁶ (1.Institute of Life and Environmental Sciences, University of Tsukuba, 2.College of Geosceince, School of Life and Environmental Sciences, University of Tsukuba, 3.Forestry and Forest Products Research Institute, 4.Faculty of Letters, Komazawa University, 5.National Research Institute of Fire and Disaster, 6.Graduate School of Education, Hyogo University of Teacher Education)

*Takuro Ogura¹, Kazuyuki Shimamoto², Toshiaki Mizuno³, Hiroyuki Yamauchi⁴, Daisuke Katayama², Tsuyoshi Hattanji⁵ (1.Graduate School of Education, Hyogo University of Teacher Education, 2.Lake Biwa Museum, 3.Lake Biwa Environmental Research Institute, 4.Art Research Center, Ritsumeikan University, 5.Faculty of Life and Environmental Sciences, University of Tsukuba)