章节大纲




    • Main Scallop Production Area of Aomori Prefecture

      1970 Start of scallop cultivation

      2016 Mutsu Bay scallops exceed 100,000 tons, the largest ever (The Suisan-Keizai Daily News, October 7, 2016)

      On the other hand,

      Dissolved orientation nitrogen (DIN) concentration in Mutsu Bay

      60% decrease (20 m) 30% decrease (bottom)