單元大綱

    • Annual changes in precipitation are shown.

















      ·   Of the three years between 1999 to 2001, 1999 witnessed a large amount of precipitation due to heavy rains flowing into Mutsu Bay in the fall of the previous year (September – November 1998) (Fig. 5).

      Relationship between environmental factors and nutritional status of Ammodytes sp. (analysis/discussion)

      When the inflow of river water to the surface layer of Mutsu Bay in the fall of the previous year is small, vertical mixing in winter is promoted, the number of organisms that are utilized as food sources increases, and a large amount of food can be consumed, resulting in the accumulation of nutrients and fattening during the body length periods between 6 mm and 10 mm.

      In contrast, large inflows of river water result in weight loss among the Ammodytes sp. (i.e., poor nutritional status).

    • Link to Japan Meteorological Agency data (Wakinosawa) 網址
    • Link to Japan Meteorological Agency data (Kanita) 網址

      Publicly available data can be used for analysis.