Dynamics of microbial carbon pump; analysis of refractory dissolved organic matter production from particulate organic matter

2015 Fiscal Year Final Research Report

• Project/Area Number: 26740001
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Environmental dynamic analysis
• Research Institution: Hokkaido University
• Principal Investigator: Tada Yuya 北海道大学, 地球環境科学研究科(研究院), 日本学術振興会特別研究員-PD (40582276)
• Project Period (FY): 2014-04-01 – 2016-03-31
• Keywords: 難分解性溶存有機物 / 海洋細菌 / 微生物炭素ポンプ / 粒子態有機物

Outline of Final Research Achievements

In this study, I focused on the microbial carbon pump, which is the one of the most important carbon sequestration systems as well as the biological carbon pump in the ocean. I tried to develop the method using semi permeable membrane to assess the production of refractory dissolved organic matter (DOM), especially humic-like fluorescence DOM (FDOM), from particulate organic matter (POM). Then I assessed the production of protein-like and humic-like FDOM from the POM using incubation experiment. In addition, I evaluated the interaction among the labile organic matter (used several amino acids and monosaccharides as a model DOM), bacterial community, and the humic-like FDOM production.

Free Research Field

海洋微生物生態学