Yasumoto Jun

写真a

Title

Assistant Professor

Researcher Number(JSPS Kakenhi)

70432870
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Current Affiliation Organization 【 display / non-display 】

  • Duty   University of the Ryukyus   Faculty of Agriculture   Regional Agricultural Engineering   Assistant Professor  

  • Concurrently   University of the Ryukyus   Graduate School of Agriculture   Subtropical Agriculture   Instructor  

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University 【 display / non-display 】

  • 1997.04
    -
    2001.03

    Kochi University   Faculty of Agriculture   Graduated

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Graduate School 【 display / non-display 】

  • 2001.04
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    2003.03

    Kochi University  Graduate School, Division of Agriculture  Master's Course  Completed

  • 2003.04
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    2006.03

    Ehime University  Graduate School, Division of Agricltural Sciences  Doctor's Course  Completed

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External Career 【 display / non-display 】

  • 2025.04
    　
    　

    Research Institute for Humanity and Nature, Program Research Department, Associate Professor  

  • 2011.02
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    2011.03

     

  • 2009.04
    　
    　

    University of the Ryukyus, Faculty of Agriculture, Department of Regional Agricultural Engineering, Research Associate  

  • 2009.04
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    2011.03

     

  • 2008.04
    -
    2009.03

     

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Affiliated academic organizations 【 display / non-display 】

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    THE JAPANESE SOCIETY OF LIMNOLOGY 

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    Japan Geoscience Union 

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    American Geophysical Union 

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    International Association of Hydrogeologists 

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    Japanese Society for Marine Biotechnology 

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Research Interests 【 display / non-display 】

  • Submarine groundwater discharge,Saltwater Intrusion,Groundwater quality,Groundwater modeling

  • 水環境保全

  • 海底地下水湧出

  • 陸と海との相互作用

  • 流域ガバナンス

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Research Areas 【 display / non-display 】

  • Environmental Science/Agriculture Science / Rural environmental engineering and planning

  • Social Infrastructure (Civil Engineering, Architecture, Disaster Prevention) / Hydroengineering

  • Environmental Science/Agriculture Science / Environmental dynamic analysis

  • Natural Science / Atmospheric and hydrospheric sciences

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Published Papers 【 display / non-display 】

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Other Papers 【 display / non-display 】

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Presentations 【 display / non-display 】

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Academic Awards 【 display / non-display 】

  • FY2025 Marine Biotechnology Paper Award

    2026.05.30   Japanese Society for Marine Biotechnology  

    Winner: Jun Yasumoto,Mariko Iijima,Akira Iguchi,Takashi Nakamura,Ryogo Takada,Mina Yasumoto-Hirose,Yuichi Iwasaki,Tetsuo Yasutaka,Kanami Mori-Yasumoto,Ryuichi Shinjo,Ryota Ide,Alice Yamazaki,Nanami Mizusawa,Yoshikazu Ohno,Atsushi Suzuki,Shugo Watabe,Ko Yasumoto

  • Japanese Association of Groundwater Hydrology Distinguished Service Award

    2023.11   Japanese Association of Groundwater Hydrology  

    Winner: Jun Yasumoto

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Grant-in-Aid for Scientific Research 【 display / non-display 】

  • Determination of acceptable terrestrial phosphate loads for coral growth: Focusing on accumulated phosphorus

    Grant-in-Aid for Scientific Research(C)

    Project Year: 2023.04  -  2026.03 

    Investigator(s): 783  Member: 783

    Direct: 3,600,000 (YEN)  Overheads: 1,080,000 (YEN)  Total: 4,680,000 (YEN)

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    783

  • Grant-in-Aid for Scientific Research(B)

    Project Year: 2020.04  -  2023.03 

    Direct: 13,700,000 (YEN)  Overheads: 4,110,000 (YEN)  Total: 17,810,000 (YEN)

  • Effects of water cycle and phosphorus load on coral calcification mechanisms in subtropical islands

    Grant-in-Aid for Scientific Research(C)

    Project Year: 2019.04  -  2022.03 

    Investigator(s): Yasumoto Jun  Member: 783

    Direct: 3,400,000 (YEN)  Overheads: 1,020,000 (YEN)  Total: 4,420,000 (YEN)

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    The objectives of this research are to estimate the acceptable daily phosphorus load (LD) for coral growth based on the correspondence between the total daily phosphate load (TDPL) and accumulated phosphorus in sea sediments. TDPL was estimated in conjunction with the results of field observations and integrated three-dimensional water cycle model. Based on the relationship between accumulated phosphorus and the number of juvenile corals in the study site, the threshold value of accumulated phosphorus was estimated to be 3.0 uM. A high positive correlation was observed between accumulated phosphorus and the total daily phosphorus load in the study site. The acceptable total daily phosphorus load for coral growth was estimated to be about 100 g-P/m3/day. These results confirm our hypothesis that terrestrial-derived phosphate is transported to the ocean through the water cycle and adsorbed on calcareous sediments, inhibiting coral growth.

  • 783

    Challenging research (sprout)

    Project Year: 2018.06  -  2020.03 

    Investigator(s): 783  Member: 783

    Direct: 4,800,000 (YEN)  Overheads: 1,440,000 (YEN)  Total: 6,240,000 (YEN)

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    783

  • Totally environmental study for sustainable use of water resources in island limestone aquifer

    Grant-in-Aid for Scientific Research(B)

    Project Year: 2017.04  -  2021.03 

    Investigator(s): Nakaya Shinji  Member: 783

    Direct: 13,100,000 (YEN)  Overheads: 3,930,000 (YEN)  Total: 17,030,000 (YEN)

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    Sustainable use of water resources in island limestone aquifer was investigated at the following points. 1) The apparent dissolution rate of Ca in the Ryukyu limestone aquifer was estimated. Mechanical weakening due to porosity changes associated with limestone dissolution was predicted. 2) To evaluate the transport behavior of salt that occurs at the boundary between salt water and fresh water in island Ryukyu-limestone aquifer, a hierarchical mathematical simulation model for converting pore structure to permeable medium was studied, and the vulnerability of a floating-type underground dam, a freshwater reservoir was evaluated from a comparative study of laboratory experiments and simulations. 3) The effect of nutrients in groundwater on coral reefs via submarine groundwater discharge around the Yoron Island, Japan, was investigated from numerical simulation in spread of submarine groundwater due to tidal current in coral reef lagoon leading to the open sea.

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Other External funds 【 display / non-display 】

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SDGs 【 display / non-display 】

  • ＳＤＧｓの達成に向けた共創的研究開発プログラム　ソリューション創出フェーズ研究開発プロジェクト　

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Media Coverage 【 display / non-display 】

  • 与論島の「陸と海をつなぐ」研究「LINKAGEプロジェクト」が成果報告会  Internet

    奄美群島南三島経済新聞  奄美群島南三島経済新聞  2026.6

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    2026年6月13日に与論町地域福祉センターで開催したLINKAGEプロジェクト成果報告会「与論島の陸と海－自然と社会・文化をつなぐ研究－」を紹介。水循環やサンゴ礁、地域文化等の研究成果と地域住民との対話が報道され、プロジェクトリーダーの安元 純による地域との協働や今後の展望に関するコメントが掲載された。

  • 与論島・大金久海岸で児童らが「海底湧水」調査　水の循環学ぶ  Internet

    奄美群島南三島経済新聞  奄美群島南三島経済新聞  2025.10

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    2025年10月4日に与論島・大金久海岸で開催した体験イベント「湧き水の量を調査しよう！」を紹介。安元 純が児童らに海底湧水の流量や塩分の調査を指導した様子と、陸と海をつなぐ地下水循環についての本人のコメントが掲載された。

  • 人の活動のサンゴ礁影響　産総研など 客観的指標を発見  Newspaper, magazine

    環境新聞社  環境新聞  2025.3

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    安元 純が参加した研究チームによる、石西礁湖の底質中の海水交換性リン酸塩（EPS）を用いた陸域影響の評価に関する研究成果を紹介。サンゴ礁保全と陸域負荷対策に向けた知見が報道された。

  • サンゴ保全のカギは陸域対策か　白化進行に新評価を発表　琉大・北里大研究チーム　底質リン量との関連性  Newspaper, magazine

    宮古新報  宮古新報  2025.3

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    安元 剛・安元 純を中心とした研究チームの成果を紹介。石西礁湖の底質中の海水交換性リン酸塩（EPS）とサンゴの衰退との関係、およびサンゴ礁保全に向けた陸域対策の重要性が報道された。

  • 「海底リンの過多でサンゴ白化」石西礁湖調査の研究チーム  Internet

    沖縄テレビ放送  OKITIVE（沖縄テレビニュース）  2025.3

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    安元 純が参加する研究チームによる石西礁湖の調査成果を、沖縄テレビのニュースサイトで紹介。海底のリン酸塩とサンゴの衰退との関連が報道された。報道年月日はニュースサイトの掲載日。

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