北海道におけるサケ科魚類イトウ(Hucho perryi)の減少過程

抄録

Based on the articles in a recreational angling magazine, it is clear that the Sakhalin taimen (Hucho perryi) (Salmonidae) was once widely distributed across Hokkaido Island, northern Japan, but has declined rapidly since the 1980s. This decrease is probably the result of the loss of riparian forests and riverine habitats associated with extensive development of agricultural land during the 1960s and 70s.