3:45 PM - 4:00 PM
[MIS26-21] Behavior of organic phosphorus compounds in Lake Kasumigaura, Japan: A 31P nuclear magnetic resonance spectroscopy study
Keywords:Phosphorus, 31P nuclear magnetic resonance (NMR)
The goal of this study is to clarify how nucleic acid-P compounds in suspended particles change with the productions of microorganisms in a shallow eutrophic lake. In particular, primary productions by phytoplankton are the greatest biological productions in surface water in lakes, yet information on P compounds composition through productions of phytoplankton is limited. The current study therefore concurrently analyzes P compounds with 31P NMR spectroscopy, particulate organic C (POC), biomass of M. aeruginosa by the quantitative polymerase chain reaction (qPCR) technique as a possible contributor of nucleic acid-P in Lake Kasumigaura. We hypothesized that (1) concentrations of nucleic acid-P compounds change with production of microorganisms in a shallow, eutrophic lake; and (2) phytoplankton species composition, including M. aeruginosa, could also alter P composition in suspended particles.