Simultaneous estimation method of denitrification and nitrogen fixation in sea water

2014 Fiscal Year Final Research Report

• Project/Area Number: 25550004
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Environmental dynamic analysis
• Research Institution: Hokkaido University
• Principal Investigator: WATANABE Yutaka 北海道大学, 地球環境科学研究科(研究院), 准教授 (90333640)
• Project Period (FY): 2013-04-01 – 2015-03-31
• Keywords: 海洋窒素循環

Outline of Final Research Achievements

The aims of this study were to develop the high precise and simultaneous method for dissolved nitrogen and argon in the ocean, and to evaluate the oceanic amount of denitrification and nitrogen fixation by using the new approach. Using the above approaches, we found that the generation rate of dinitrification in the Sea of Okhotsk was over 7 micromole/kg/year despite no nitrogen fixation, and it significantly contributed to the oceanic nitrogen cycle in the North Pacific.

Free Research Field

化学海洋学