Spatial and temporal variations of the quality of dissolved organic matter in a dimictic lake in Japan

Nagamitsu Maie1, Kazunori Shizuka2, Wataru Kakino3, Eikichi Shima3 and Hajime Tanji3, (1)Kitasato University, School of Veterinary Medicine, Aomori, Japan, (2)Kitasato University, Graduate School of Veterinary Science, Towada, Japan, (3)Kitasato University, School of Veterinary Medicine, Towada, Japan