The connection between river and lake: quantification of phosphorus compounds in Lake Kasumigaura Basin

2017 Fiscal Year Final Research Report

• Project/Area Number: 15H05533
• Research Category: Grant-in-Aid for Young Scientists (A)
• Allocation Type: Single-year Grants
• Research Field: Hydraulic engineering
• Research Institution: National Institute for Environmental Studies
• Principal Investigator: Shinohara Ryuichiro 国立研究開発法人国立環境研究所, 地域環境研究センター, 主任研究員 (00610817)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: リン / 有機態リン / 31P NMR / ヌクレオチド

Outline of Final Research Achievements

In the current study, we quantified P compounds classes in sediment and suspended particles in a shallow eutrophic Lake Kasumigaura, Japan. We found that biogenic P classes are predominant in suspended particles and they change the particulate P (PP) concentrations. In sediment, organic P in the solid phase is the most important source for P in pore water, at least from December to April. From inflow river to the lake, we found that inorganic P is dominant in the inflow river whereas organic P is dominant in the inside of Lake Kasumigaura.

Free Research Field

応用生態工学