1. Graduate School of Agriculture, Kindai University, Nara, Japan
2. Faculty of Food and Agricultural Sciences, Fukushima University, Fukushima, Japan
3. School of Environmental Science, The University of Shiga Prefecture, Hikone, Japan
4. National Museum of Ethnology, Suita, Japan
5. Faculty of Agriculture and Natural Resources, University of Namibia, Windhoek, Namibia
6. JST/JICA, SATREPS, Tokyo, Japan