Thu. May 29, 2025 1:45 PM - 3:15 PM Exhibition Hall Special Setting (2) (Exhibition Hall 7&8, Makuhari Messe)

[E] Oral
| A (Atmospheric and Hydrospheric Sciences )
| A-HW Hydrology & Water Environment

[A-HW27] Biodiversity, nutrients and other materials in ecosystems from headwaters to coasts

2:15 PM - 2:30 PM

[AHW27-15] Temporal and Spatial Variations in Fulvic Acid-Bound Heavy Metal Concentrations in the Asahi and Takahashi Rivers, Okayama Prefecture

Rohdof Lactem Yengeh¹, *Hiroaki Somura¹, Toshitsugu Moroizumi¹, Yasushi Mori¹, Morihiro Maeda¹ (1.Graduate School of Environmental, Life, Natural Science and Technology, Okayama University)

Thu. May 29, 2025 5:15 PM - 7:15 PM Poster Hall (Exhibition Hall 7&8, Makuhari Messe)

[E] Poster
| A (Atmospheric and Hydrospheric Sciences )
| A-HW Hydrology & Water Environment

[A-HW27] Biodiversity, nutrients and other materials in ecosystems from headwaters to coasts

5:15 PM - 7:15 PM

[AHW27-P09] **Comparison of eDNA Extraction Methods from Autoclaved sul1 Bacterial Suspension: Concentration and Gene Abundance Analysis**

*Lingxue Gao¹, Nozomi Nakahara¹, Hiroaki Somura¹, Morihiro Maeda¹ (1.Graduate School of Environmental, Life, Natural Science and Technology, Okayama University)

Wed. May 28, 2025 5:15 PM - 7:15 PM Poster Hall (Exhibition Hall 7&8, Makuhari Messe)

[E] Poster
| A (Atmospheric and Hydrospheric Sciences )
| A-HW Hydrology & Water Environment

[A-HW28] Hydrology and Water Environment

5:15 PM - 7:15 PM

[AHW28-P02] Distinct drought characteristics in the understudied areas of the Mekong Delta, Vietnam: Inland, Coastal, and Islands

*Yu Tsuha¹, Hiroaki Somura¹, Tram Ngoc Quynh Vo, Toshitsugu Moroizumi¹ (1.Okayama University )

Fri. May 30, 2025 5:15 PM - 7:15 PM Poster Hall (Exhibition Hall 7&8, Makuhari Messe)

[E] Poster
| A (Atmospheric and Hydrospheric Sciences )
| A-GE Geological & Soil Environment

[A-GE34] Subsurface Mass Transport and Environmental Assessment

5:15 PM - 7:15 PM

[AGE34-P11] Assessment of Natural Latex Application Methods for Soil Infiltration and Erosion Control: A Preliminary Study

*Hiroaki Somura¹, Koki Kumamoto¹, Yasushi Mori¹, Jun Kano¹ (1.Graduate School of Environmental, Life, Natural Science and Technology, Okayama University)

Thu. May 29, 2025 5:15 PM - 7:15 PM Poster Hall (Exhibition Hall 7&8, Makuhari Messe)

[E] Poster
| A (Atmospheric and Hydrospheric Sciences )
| A-CG Complex & General

[A-CG41] Satellite Earth Environment Observation

5:15 PM - 7:15 PM

[ACG41-P09] ASSESSMENT OF IRRIGATION AND COFFEE EXPANSION IMPACTS ON WATER RESOURCES IN THE SREPOK RIVER WATERSHED

*Truong Thao Sam¹, Hiroaki Somura¹, Toshitsugu MOROIZUMI¹ (1.Okayama University)

Hiroaki Somura

Speaker, Author, Co-Author