1. Council of Food, Agriculture and Rural Area Policies (2002) Handbook of survey planning and designing in consideration of environment. Ministry of Agriculture, Forestry and Fisheries, Tokyo (in Japanese)
2. Hata K (1997) Current situation and problems of irrigation and drainage systems. In: Advice Center for Rural Environment Support (ed) Improvement methods of agricultural irrigation and drainage facilities in consideration of biota conservation. Advice Center for Rural Environment Support, Tokyo (in Japanese)
3. Hata K (2000) Run-up of the fish to the paddy field. Rural Environ 16:61–69 (in Japanese)
4. Hirota J (2003) Issues surrounding the farmland development and environment-friendly, multi-functionality. Res Agric Low 38:42–54 (in Japanese)
5. Hosoya K (1989) Gnathopogon elongatus elongatus. In: Kawanabe H, Mizuno N, Hosoya K (eds) Freshwater fishes of Japan. Yama-kei Publishers Co., Ltd., Tokyo, pp 298–299 (in Japanese)