Katsura Saito², *Chiyuki Narama¹, Eri Fukada³ (1. Niigata University, Program of Field Research in the Environmental Sciences, 2. Niigata University, Graduate School of Science and Technology, 3. Civil Engineering Research Institute for Cold Region)

*Ryotaro Okamoto¹, Hiroyuki Oguma¹ (1. National Institute for Environmental Studies)

*KIYOSHI SAIJO¹ (1. Miyagi University of Education)

*Takushi KOYAMA¹, Syota INAMI², Hirofumi KONDO³, Akihiko SASAKI¹ (1. Faculty of Letters,Kokushikan University, 2. JSPS, 3. Kokushikan University)

*Takaharu TAWARA¹, Yuko SUMI², Kunimitsu AZUMA³, Sachiyo IWATA⁴, Shuji TAKINO⁵ (1. Nanki High School, 2. Irogawa Junior High school, 3. Koyo Junior High School, 4. Kumano Ringyo Public Interest Incorporated Foundation, 5. Kumano Nature and Environment Liaison Council)

*Akihiro Yoshida¹, Akihiko Sasaki², Arata Momohara³, Motonari Ohyama⁴ (1. Kagoshima University, 2. Kokushikan University, 3. Chiba University, 4. Tohoku University)