[A-CG33] 陸海相互作用－沿岸生態系に果たす水・物質循環の役割－

[ACG33-06] 小集水域からの地下水流出が海岸部の基礎生産に及ぼす影響：小浜湾東岸域の事例

*小林 志保¹、杉本 亮²、宮田 洋実¹、本田 尚美³、山田 誠³、富永 修²、田原 大輔²、小路 淳⁴、谷口 真人³ (1.京都大学、2.福井県立大学、3.総合地球環境学研究所、4.広島大学)

キーワード：陸海相互作用, 海底湧水, 沿岸生態系, 基礎生産

Submarine groundwater discharge (SGD) often influences on biogeochemical properties in coastal seas. We observed spatial and temporal variations in SGD using ²²²Rn and seepage meter along the shoreline of Obama bay, Japan. The results showed SGD exists even in the shallow sea adjacent to the small water catchment area (~ 1 km²), where the range of the tide is relatively small (10 ~ 30 cm). The spatial and temporal variations in chlorophyll observed at the same time suggest that the SGD influences on primary production.