Roles of trench sediment for biogeochemical cycles: Exemplified from the Japan Trench
| Project/Area Number |
20H02013
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Review Section |
Basic Section 17050:Biogeosciences-related
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| Research Institution | Tokyo University of Marine Science and Technology |
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Principal Investigator |
Glud Ronnie 東京海洋大学, 学術研究院, 教授 (60814978)
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| Co-Investigator(Kenkyū-buntansha) |
北里 洋 東京海洋大学, 学術研究院, 特任教授 (00115445)
豊福 高志 東京海洋大学, 学術研究院, 准教授 (30371719)
小栗 一将 国立研究開発法人海洋研究開発機構, 地球環境部門(海洋生物環境影響研究センター), 招聘主任研究員 (10359177)
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| Project Period (FY) |
2020-04-01 – 2023-03-31
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| Project Status |
Completed (Fiscal Year 2022)
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| Budget Amount *help |
¥17,550,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥4,050,000)
Fiscal Year 2022: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2021: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2020: ¥6,890,000 (Direct Cost: ¥5,300,000、Indirect Cost: ¥1,590,000)
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| Keywords | 生元素循環 / 超深海海溝 / 生物地球化学 / 微生物 / 現場観測 / 酸素濃度プロファイル / 有人潜水調査 / 超深海海溝域 / 超深海環境再現装置 / ゲノム解析 |
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| Outline of Research at the Start |
海洋表層の一時生産が南北で異なる日本海溝の観測調査を行い、海溝底の生物地球化学、微生物群集の機能および代謝速度を測定する。このために、自律型現場観測装置を新たに開発し、海溝底で有機物の無機化速度を測定すると共に、堆積物を採取して微生物の組成と生態系機能を検討し、生物生産量と微生物による有機物の無機化との関係を明らかにする。研究を通じて、超深海海溝域が地球の生物地球化学循環に果たす役割を示す。
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| Outline of Final Research Achievements |
To understand biogeochemical cycles and distributions of microorganisms at hadal trench sea floor located in different surface primary productivity areas, we developed in situ O2 profiler lander system to measure O2 profiles to obtaion carbon mineralization rate in hadal sediments.We also collected sediment cores and investigated relationships between surface primary productivity and carbon mineralization rates. Furthermore, we analyzed origin of organic carbon supplied to hadal sea floor and concentrations of persistent organic pollutants which is concerned the enrichment in the sediments.Our results can contribute to the further hadal studies carrying out in the hadal trenches located in the south-west Pacific and the antarctic oceans where indicate high surface primary productivity.
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| Academic Significance and Societal Importance of the Research Achievements |
超深海の海溝域は海洋の中でもっとも低い有機物分解の場として理解されていた。しかし、ここ10年の研究を通じ、海溝底は非常に生物活性の高い場であることが理解されるようになった。高い基礎生産海域と貧栄養海域を併せ持つ日本近海の海溝における有機炭素の無機化過程の理解によって、より浅い環境における有機炭素の無機化率との違いを明らかにできるだけでなく、全球に分布する他の海溝における無機化率との比較も可能になる。本研究は、房総沖プレート三重会合点における微生物組成と有機物分解の実態を明らかしただけでなく、小笠原から宮城沖にかけた海域で現場観察した海溝域生態系の特徴との比較へと視野を広げることにつながった。
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Report
(4 results)
Research Products
(40 results)
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[Journal Article] Intercellular nitrate storage by diatoms can be an important nitrogen pool in freshwater and marine cecosystems.2022
Author(s)
Stief P, Schauberger, C, Lund MB, Greve a, Abed RMM, Al-Najjar AA, Attard K, Bonalia S, Deutzmann J, Franco-Cisterna B, Garcia-Robledo, Marit-Holtappelsm John U, Maclute A, Magee MJ, Pors R, Santi-Temkic T, Schwerwass A, Sevilgen DS, de Beer D, Glud RN, Schramm A, Kamp A,
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Journal Title
Com. Earth & Environment
Volume: 3
Related Report
Peer Reviewed / Int'l Joint Research
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[Journal Article] High Carbon mineralisation rates in subseafloor hadal sediments -result of frequent mass wasting2022
Author(s)
Zabel M, Glud RN, Sanei H, Elvert M, Pape T, Chuang PC, Okuma E, Gepraegs P, Koelling M
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Journal Title
Geochehemistry, Geophysics, Geosystems
Volume: 23
Related Report
Peer Reviewed / Int'l Joint Research
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[Journal Article] Massive occurrence of benthic plastic debris at the abyssal seafloor beneath the Kuroshio Extension, the North West Pacific2021
Author(s)
Nakajima R, Tsuchiya M, Yabuki A, Masuda S, Kitahashi T, Nagano Y, IKuta T, Isobe N, Nakata H, Ritchie H, Oguri K, Osafune S, Kawamura K, Suzukawa M, Yamauchi T, Iijima K, Yoshida T, Chiba S, Fujikura K
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Journal Title
Marine Pollution Bulletin
Volume: 166
Pages: 112188-112188
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Distribution, source and burial of sedimentary organic carbon in Kermadec and Atacama Trenches: Insights on organic carbon heterogeneity in hadal trenches.2021
Author(s)
Yungpin X, L Xinxin, M Lou, W Xiao, J Fang, H Rashid, Y Peng, W Li, Z Jia, F, Wenzhoefer, AA Rowden, RN Glud
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Journal Title
J Geophys. Res Biogeosci.
Volume: -
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Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Eurythenes hadalis sp. Nov. (Crustacea: Amphipoda) exhibit ontogenetic vertical stratification across abyssal and hadal depths of the Peru-Chile Trench, southeast Pacific Ocean.2021
Author(s)
12.Weston JNJ, L Espinosa-Leal, JA Wainwright, ECD Stewart, TD Linley, WDK Reid, P Hidalgo, ME Oliva, O Ulloa, F Wenzhoefer, RN Glud, R Escribano, AJ Jamison
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Journal Title
Marine Biodiversity
Volume: -
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Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Bacterial diversity in deep-sea sediments under influence of asphalt seep at the Sao Paulo Plateau.2020
Author(s)
Queiroz, L.L., A. G. Bendia, R. T. D. Duarte, D. A. das Gracas, A. L. da Costa da Silva, C. R. Nakayama, P. Y. Sumida, A. O. S. Lima, Y. Nagano, K. Fujikura, H. Kitazato, and V. H. Pellizari,
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Journal Title
Antonie van Leeuwenhoek
Volume: 113
Pages: 707-717
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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