1. Graduate School of Bioresource and Bioenvironmental Sciences, Kyushu University, Fukuoka, Japan
2. Shiiba Research Forest, Kyushu University, Shiiba, Miyazaki, Japan
3. Kasuya Research Forest, Kyushu University, Sasaguri, Fukuoka, Japan
4. Ashoro Research Forest, Kyushu University, Ashoro, Hokkaido, Japan