Lake Biwa Branch Office, National Institute for Environmental Studies, 5-34 Yanagasaki, Otsu, Shiga 520-0022, Japan
Tokyo Metropolitan Research Institute for Environmental Protection, Tokyo Environmental Public Service Corporation, 1-7-5 Shinsuna, Koto, Tokyo, 136-0075, Japan
School of Environmental Science, the University of Shiga Prefecture, 2500 Hassaka-cho, Hikone, Shiga 522-8533, Japan

Institute for Rural Engineering, National Agriculture and Food Research Organization, 2-1-6 Kannondai, Tsukuba, Ibaraki 305-8609, Japan

School of Environmental Science, the University of Shiga Prefecture, 2500 Hassaka-cho, Hikone, Shiga 522-8533, Japan

School of Veterinary Medicine, Kitasato University, 35-1 Higashi23bancho, Towada, Aomori 034-8628, Japan

Institute for Rural Engineering, National Agriculture and Food Research Organization, 2-1-6 Kannondai, Tsukuba, Ibaraki 305-8609, Japan

Institute for Rural Engineering, National Agriculture and Food Research Organization, 2-1-6 Kannondai, Tsukuba, Ibaraki 305-8609, Japan