1. Faculty of Life and Environmental Sciences, Shimane University , 1060 Nishikawatsu-cho, Matsue, Shimane 690-8504 , Japan
2. Research Core for Interdisciplinary Science, Okayama University , 3-1-1 Tsushima-naka, Okayama 700-8530 , Japan
3. Department of Environmental Sciences and Technology, Graduate School of Agriculture, Osaka Metropolitan University , 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531 , Japan
4. 2-4-3 Ninomiya , Tsukuba, Ibaraki 305-0051 , Japan
5. Research and Development Division, Forest Department Sarawak , Kuching, Sarawak 93250 , Malaysia
6. Graduate School of Human and Environmental Studies, Kyoto University , Yoshida-Nihonmatsu-cho, Sakyo-ku, Kyoto 606-8501 , Japan