学位論文 Effect of Inorganic and Organic Suspended Particles on Nitrogen Transformation in Freshwater Column

LE, QUYNH NGA  ,  Quynhnga, Le

2015-09
内容記述
Nitrogen (N) is a major nutrient that affects productivity in freshwater systems. However, the existing knowledge on the interaction between suspended particles and N transformation in freshwater columns is still fragmentary. Thus, the overall purpose of this study is to elucidate the effects and mechanisms of inorganic and organic suspended particles on N transformation in freshwater column. The results showed that mineral type and concentration of inorganic suspended particles significantly affected nitrifying bacterial cell density and nitrification rate constant. Furthermore, fine particulate organic matter (i.e., organic suspended particles), having a relatively large surface area, is an important dissolved N source in streams, despite being relatively refractory. Overall, this study implied the important role of both inorganic and organic suspended particles in N dynamics in freshwater column.

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