水環境

[II-181] Nutrient dynamics by aquatic insects in the Natori River basin

〇Aya Okuda¹, So Kazama¹, Noriko Uchida¹ (1.Tohoku University)

Keywords:phosphorous, nitrogen, Riparian ecosystem, Material circulation

In recent years, it has become clear that there is a reverse flow from the coastal area to the upstream area due to biological factors.In addition, research on artificial wetlands using reeds suggests that aquatic animals contribute to the elimination of nutrients out of the system by migration and predation due to emergence and terrestrialization. Based on these findings, we consider that aquatic animals may function as a carrier of material circulation like upstream migratory fish such as salmon and seabirds, and consider the effects of nutrient transport by aquatic insects in the Natori River basin. Therefore, we tried to understand the dynamics of nutrients in the Natori River basin.