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 】

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    2001.03

    Kochi University   Faculty of Agriculture   Graduated

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Graduate School 【 display / non-display 】

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    2003.03

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

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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 】

  • 2006.04
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    2008.03

    Kyushu University  

  • 2006.04
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    2008.03

     

  • 2008.04
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    2009.03

     

  • 2009.04
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    2011.03

     

  • 2009.04
    　
    　

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

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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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    Drainage and Rural Engineering 

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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 】

  • Reply to discussion of "An assessment of small Island hydrological research activity conducted in the Oceania Region"<SUP>1</SUP>

    Leong, C; Solomone, M; Shinjo, R; Tomojiri, D; Uchiyama, C; Yasumoto, J; Razafindrabe, B

    HYDROLOGICAL SCIENCES JOURNAL ( Hydrological Sciences Journal )  69 ( 11 ) 1557 - 1559   2024.08 [ Peer Review Accepted ]

    Type of publication: Research paper (scientific journal)

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  • Metagenomic analysis of the microbial communities and associated network of nitrogen metabolism genes in the Ryukyu limestone aquifer

    Maruyama, R; Yasumoto, K; Mizusawa, N; Iijima, M; Yasumoto-Hirose, M; Iguchi, A; Hermawan, OR; Hosono, T; Takada, R; Song, KH; Shinjo, R; Watabe, S; Yasumoto, J

    SCIENTIFIC REPORTS ( Scientific Reports )  14 ( 1 ) 4356   2024.02 [ Peer Review Accepted ]

    Type of publication: Research paper (scientific journal)

    　View Summary

    Abstract While microbial biogeochemical activities such as those involving denitrification and sulfate reduction have been considered to play important roles in material cycling in various aquatic ecosystems, our current understanding of the microbial community in groundwater ecosystems is remarkably insufficient. To assess the groundwater in the Ryukyu limestone aquifer of Okinawa Island, which is located in the southernmost region of Japan, we performed metagenomic analysis on the microbial communities at the three sites and screened for functional genes associated with nitrogen metabolism. 16S rRNA amplicon analysis showed that bacteria accounted for 94–98% of the microbial communities, which included archaea at all three sites. The bacterial communities associated with nitrogen metabolism shifted by month at each site, indicating that this metabolism was accomplished by the bacterial community as a whole. Interestingly, site 3 contained much higher levels of the denitrification genes such as narG and napA than the other two sites. This site was thought to have undergone denitrification that was driven by high quantities of dissolved organic carbon (DOC). In contrast, site 2 was characterized by a high nitrate-nitrogen (NO<sub>3</sub>-N) content and a low amount of DOC, and this site yielded a moderate amount of denitrification genes. Site 1 showed markedly low amounts of all nitrogen metabolism genes. Overall, nitrogen metabolism in the Ryukyu limestone aquifer was found to change based on environmental factors.

  • Mechanism of denitrification in subsurface-dammed Ryukyu limestone aquifer, southern Okinawa Island, Japan

    Oktanius Richard Hermawan, Takahiro Hosono, Jun Yasumoto, Ko Yasumoto, Ke-Han Song, Rio Maruyama, Mariko Iijima, Mina Yasumoto-Hirose, Ryogo Takada, Kento Hijikawa, Ryuichi Shinjo

    Science of The Total Environment ( Elsevier BV )  912   169457 - 169457   2023.12 [ Peer Review Accepted ]

    Type of publication: Research paper (scientific journal)

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  • An assessment of small island hydrological research activity conducted in the Oceania Region

    Chris Leong, Maletina Solomone, Ryuichi Shinjo, Daiki Tomojiri, Christmas Uchiyama, Jun Yasumoto, Bam Razafindrabe

    Hydrological Sciences Journal ( Informa UK Limited )  68 ( 14 ) 1 - 16   2023.08 [ Peer Review Accepted ]

    Type of publication: Research paper (scientific journal)

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  • Phosphate Enrichment Hampers Development of Juvenile Acropora digitifera Coral by Inhibiting Skeleton Formation.

    Iijima M, Yasumoto K, Yasumoto J, Yasumoto-Hirose M, Kuniya N, Takeuchi R, Nozaki M, Nanba N, Nakamura T, Jimbo M, Watabe S

    Marine biotechnology (New York, N.Y.) ( Marine Biotechnology )  21 ( 2 ) 291 - 300   2019.04 [ Peer Review Accepted ]

    Type of publication: Research paper (scientific journal)

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Books 【 display / non-display 】

  • アジアの巨大都市-都市景観と水・地下環境

    ( Part: Allotment Writing )

    2011

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Other Papers 【 display / non-display 】

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Presentations 【 display / non-display 】

  • Dynamics of phosphate species in soil and groundwater in coastal limestone area, Okinawa, Japan

    Jun Yasumoto, Masashi Nozaki, Ko Yasumoto, Mina Hirose Yasumoto, Ryuichi Shinjo, Akira Iguchi, Mariko Iijima and Shinji Nakaya

    AGU Fall Meeting  (San Francisco)  2019.12  -  2019.12 

  • Phosphorus enrichment hampers the development of juvenile coral by directly inhibiting biomineral skeleton elongation

    Iijima M, Yasumoto K, Yasumoto J, Hirose Yasumoto M, Iguchi A, Jimbo M, Watabe S.

    AGU Fall Meeting  (San Francisco)  2019.12  -  2019.12 

  • Mechanisms involved in calcium carbonate precipitation by marine microorganisms

    Kanami Mori-Yasumoto, Yasumoto Ko, Mina Yasumoto-Hirose, Jun Yasumoto, Mitsuru Jimbo, Shugo Watabe

    AGU Fall Meeting  (San Francisco)  2019.12  -  2019.12 

  • Effect of polyamine transporter inhibitor on the pH increase in calcifying fluids of juvenile coral polyps possibly involved in calcification processes

    Yasumoto K, Kubota A, Yasumoto J, Mori-Yasumoto K, Iijima M, Hirose Yasumoto M, Iguchi A, Jimbo M, Watabe S.

    AGU Fall Meeting  (San Francisco)  2019.12  -  2019.12 

  • Phylogenetic relationships of prokaryotic symbionts in hard coral based on 16S rRNA sequences

    Yuze M, Yasumoto-Hirose M, Mizusawa N, Yasumoto K, Yasumoto J, Iijima M, Kasai H, Amano H, Jimbo M, Watabe S.

    International Symposium on Aquatic Metagenomics 2019  2019.11  -  2019.11 

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

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

    Project Year: 2023.04  -  2026.03 

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

  • 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 

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

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

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    Grant-in-Aid for Scientific Research(C)

    Project Year: 2019.04  -  2021.03 

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

  • Grant-in-Aid for challenging Exploratory Research

    Project Year: 2018.04  -  2021.03 

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

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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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