Seasonal Variations in Nutrient Budgets of Hakata Bay, Japan |
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| Authors: | Tetsuo Yanagi |
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| Institution: | (1) Research Institute for Applied Mechanics, Kyushu University, Kasuga, 816-8580, Japan |
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| Abstract: | Seasonal variations in freshwater, salt, phosphorus and nitrogen budgets of Hakata Bay, Japan were investigated from April 1993 until March 1994. The internal sink of dissolved inorganic phosphorus (DIP) and nitrogen (DIN), and the internal source of dissolved organic phosphorus (DOP) and nitrogen (DON) predominate in the bay. This means that the production of organic matter is larger than respiration, and atmospheric CO2 is absorbed in the water column of Hakata Bay. Denitrification is more dominant than nitrogen fixation in the bay. Compared to Tokyo and Mikawa Bays, Hakata Bay is harder to eutrophicate, mainly due to the shorter residence time of freshwater. |
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| Keywords: | Box model analysis nutrient budget CO2 absorption denitrification |
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