[A-HW36] Material transport, biodiversity and environmental changes in watersheds from headwaters to coasts

[AHW36-P29] Preliminary report on terrestrial nitrogen loading pathways from land to coast around Kuroshima Island in the Sekisei Lagoon, Okinawa, based on stable nitrogen isotope ratios of groundwater and macroalgae

*Hirata Nanoka¹, Takahiro Hosono², Ko Yasumoto³, Jun Yasumoto^4,5, Daiki Tomojiri⁴, Mariko Iijima⁶, Ryuichi Shinjo^7,4 (1. Graduate School of Science and Technology, Kumamoto University, 2. Faculty of Advanced Science and Technology, Kumamoto University, 3. School of Marine Biosciences, Kitasato University, 4. Research Institute for Humanity and Nature, 5. Faculty of Agriculture, University of the Ryukyus, 6. National Institute of Advanced Industrial Science and Technology, 7. Faculty of Science, University of the Ryukyus)

Keywords:Sekisei Lagoon, Nutrients, Macroalgae, Groundwater, Stable nitrogen isotope