2012-04-05 Impacts of river alteration for flood control on freshwater turtle populations Authors: Hayato Usuda, Takae Morita, and Masami Hasegawa Year: 2010 Journal: LANDSCAPE AND ECOLOGICAL ENGINEERING 発表者: 左右田 周斗(地理生態学研究室 学部4年) keywords:River alteration, flood control, freshwater turtles, population decline, hibernation site