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Refinement of biomarker-based paleovegetation analysis, and its application to reconstruction of the paleovegetational variation in the northern Japan over the past 5 million years

Research Project

Project/Area Number 18H01322
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 17050:Biogeosciences-related
Research InstitutionHokkaido University

Principal Investigator

Sawada Ken  北海道大学, 理学研究院, 教授 (20333594)

Co-Investigator(Kenkyū-buntansha) 力石 嘉人  北海道大学, 低温科学研究所, 教授 (50455490)
入野 智久  北海道大学, 地球環境科学研究院, 助教 (70332476)
Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥14,820,000 (Direct Cost: ¥11,400,000、Indirect Cost: ¥3,420,000)
Fiscal Year 2020: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2019: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2018: ¥8,320,000 (Direct Cost: ¥6,400,000、Indirect Cost: ¥1,920,000)
Keywords古植生解析 / 植物テルペノイド / バイオマーカー / 日本海北海道沖 / 東アジアモンスーン / 陸源物質輸送 / 長鎖アルキルジオール / 分子内同位体分析 / 植物テルぺノイド / 植物バイオマーカー
Outline of Final Research Achievements

The objective of this study is to reconstruct variations in paleovegetation and terrestrial paleoenvironment by analyses of terrestrial plant-derived biomarkers and pollen/spore in sediment cores from Japan Sea off Hokkaido (U1422 and U1423 cores) collected by the International Ocean Drilling Program (IODP). We reconstructed the paleovegetation variations during ca. 4.3 million years and centurial-scale variations during ca. 700 kiloyears in U1423 and U1422 sites, respectively. The paleovegetation variations reconstructed by the coniferous diterpenoids and the triterpenoids derived by broad-leaved tree are synchronous to the global climatic variations such as warm/cool conditions with glacial/interglacial or centurial scales, elucidating paleoclimatic system variations related to monsoonal system in the northern Japan Sea by combined analyses of organic molecules and pollens.

Academic Significance and Societal Importance of the Research Achievements

本研究では植物テルペノイドと花粉を用いて過去数10万~数100万年オーダーの連続した海底堆積コアから古植生・古環境・古気候変動を復元した。本研究で復元した過去約450万年という期間は、人類史や全球的な温暖期から第四紀の寒冷期に移り行く寒冷化の気候環境変動史を俯瞰できる年代範囲である。その時間スケールの古植生・陸域古環境の年代変動を体系的に復元した研究例は世界的に見てもかなり少ない。また、北日本の植生帯は多様であり気候変動に敏感に応答するので、北太平洋(極東アジア)北部の過去約450万年間の古植生・陸域古環境データがはじめて提示できたことは有意義でインパクトの高い研究であると考える。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • Research Products

    (70 results)

All 2021 2020 2019 2018 Other

All Journal Article (16 results) (of which Int'l Joint Research: 7 results,  Peer Reviewed: 15 results,  Open Access: 6 results) Presentation (50 results) (of which Int'l Joint Research: 14 results,  Invited: 1 results) Remarks (4 results)

  • [Journal Article] Depositional processes of plant fragment-concentrated sandstones in turbiditic sequences recorded by plant biomarkers (Miocene Kawabata Formation, Japan)2021

    • Author(s)
      Furota Satoshi、Sawada Ken、Kawakami Gentaro
    • Journal Title

      International Journal of Coal Geology

      Volume: 233 Pages: 103643-103643

    • DOI

      10.1016/j.coal.2020.103643

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Reconstruction of Holocene Optimum paleoclimatic variations using long-chain n-alkanes and alkenones in sediments from Dabusu Lake, northeastern China2020

    • Author(s)
      Sawada Ken、Ono Makiko、Nakamura Hideto、Tareq Shafi Mohammad
    • Journal Title

      Quaternary International

      Volume: 550 Pages: 27-38

    • DOI

      10.1016/j.quaint.2020.03.011

    • Related Report
      2020 Annual Research Report 2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Intercomparison of XRF Core Scanning Results From Seven Labs and Approaches to Practical Calibration2020

    • Author(s)
      Dunlea, A. G., Murray, R. W., Tada, R., Alvarez-Zarikian, C. A., Anderson, C. H., Gilli, A., Giosan, L., Gorgas, T., Hennekam, R., Irino, T., Murayama, M., Peterson, L.C., Reichart, G.-J., Seki, A., Zheng, H., Ziegler, M.
    • Journal Title

      Geochemistry, Geophysics, Geosystems

      Volume: 21 Issue: 9

    • DOI

      10.1029/2020gc009248

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] 四万~四十万年前の氷期低海水準期における陸橋成立の可能性2020

    • Author(s)
      入野智久
    • Journal Title

      旧石器時代研究への視座「特集:4万年前以前日本列島に人類はいたのか」

      Volume: 2 Pages: 8-10

    • Related Report
      2020 Annual Research Report
  • [Journal Article] Sulfur isotope ratios in co-occurring barite and carbonate from Eocene sediments: A comparison study2020

    • Author(s)
      Toyama Kotaro、Paytan Adina、Sawada Ken、Hasegawa Takashi
    • Journal Title

      Chemical Geology

      Volume: 535 Pages: 119454-119454

    • DOI

      10.1016/j.chemgeo.2019.119454

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] イベント堆積物中の環構造が減成されたトリテルペノイドのGC-MS解析2019

    • Author(s)
      朝日 啓泰、沢田健
    • Journal Title

      Researches in Organic Geochemistry

      Volume: 35 Pages: 55-72

    • NAID

      130007961978

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A fossil aphid gall from the middle Pleistocene sediment in Hyogo Prefecture, western Japan2019

    • Author(s)
      Tsukagoshi Minoru、Sawada Ken、Akimoto Shin‐ichi
    • Journal Title

      Entomological Science

      Volume: 22 Issue: 3 Pages: 270-274

    • DOI

      10.1111/ens.12370

    • NAID

      120006882086

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Establishment of Upper Cretaceous bio- and carbon isotope stratigraphy in the northwest Pacific Ocean and radiometric ages around the Albian/Cenomanian, Coniacian/Santonian and Santonian/Campanian boundaries2019

    • Author(s)
      Takashima, R., Nishi, H., Yamanaka, T., Orihashi, Y., Tsujino, Y., Quidelleur, X., Hayashi, K., Sawada, K., Nakamura, H. and Ando
    • Journal Title

      Newsletters on Stratigraphy

      Volume: 52 Issue: 3 Pages: 341-376

    • DOI

      10.1127/nos/2019/0472

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Assessment for paleoclimatic utility of biomass burning tracers in SE-Dome ice core, Greenland2019

    • Author(s)
      Parvin Fahmida、Seki Osamu、Fujita Koji、Iizuka Yoshinori、Matoba Sumito、Ando Takuto、Sawada Ken
    • Journal Title

      Atmospheric Environment

      Volume: 196 Pages: 86-94

    • DOI

      10.1016/j.atmosenv.2018.10.012

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Higher plant triterpenoids bound in resistant macromolecules in extant and Pliocene fossil <i>Liquidambar</i> fruits2018

    • Author(s)
      Ken Sawada, Takaaki Arai, Hideto Nakamura, Minoru Tsukagoshi
    • Journal Title

      Researches in Organic Geochemistry

      Volume: 34 Issue: 2 Pages: 37-45

    • DOI

      10.20612/rog.34.2_37

    • NAID

      130007607913

    • ISSN
      1344-9915, 2189-7891
    • Year and Date
      2018-12-30
    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Aliphatic hydrocarbons identiAliphatic hydrocarbons identified in lichen genus <i>Cladonia</i> and <i>Xanthoria</i> : Potential for their chemotaxonomic and environmental indicators2018

    • Author(s)
      池田 A. 雅志, 中村 英人, 沢田 健
    • Journal Title

      Researches in Organic Geochemistry

      Volume: 34 Issue: 2 Pages: 15-28

    • DOI

      10.20612/rog.34.2_15

    • NAID

      130007607847

    • ISSN
      1344-9915, 2189-7891
    • Year and Date
      2018-12-30
    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Algal-derived 24-ethylcholesta-5,22-dien-3β-ol (stigmasterol) is frequently found in high-molecular-weight dissolved organic matter (HMW-DOM) during summer in freshwater and brackish lakes2018

    • Author(s)
      Urai Atsushi、Takahashi Koji、Chikaraishi Yoshito、Fukushima Kazuo
    • Journal Title

      GEOCHEMICAL JOURNAL

      Volume: 52 Issue: 4 Pages: e15-e20

    • DOI

      10.2343/geochemj.2.0528

    • NAID

      130007431374

    • ISSN
      0016-7002, 1880-5973
    • Year and Date
      2018-06-12
    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Novel alkenone-producing strains of genus Isochrysis (Haptophyta) isolated from Canadian saline lakes show temperature sensitivity of alkenones and alkenoates2018

    • Author(s)
      Araie Hiroya、Nakamura Hideto、Toney Jaime L.、Haig Heather A.、Plancq Julien、Shiratori Takashi、Leavitt Peter R.、Seki Osamu、Ishida Ken-ichiro、Sawada Ken、Suzuki Iwane、Shiraiwa Yoshihiro
    • Journal Title

      Organic Geochemistry

      Volume: 121 Pages: 89-103

    • DOI

      10.1016/j.orggeochem.2018.04.008

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Fluctuations in the East Asian monsoon recorded by pollen assemblages in sediments from the Japan Sea off the southwestern coast of Hokkaido, Japan, from 4.3 Ma to the present2018

    • Author(s)
      Igarashi Yaeko、Irino Tomohisa、Sawada Ken、Song Lu、Furota Satoshi
    • Journal Title

      Global and Planetary Change

      Volume: 163 Pages: 1-9

    • DOI

      10.1016/j.gloplacha.2018.02.001

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Cold-induced metabolic conversion of haptophyte di- to tri-unsaturated C37 alkenones used as palaeothermometer molecules2018

    • Author(s)
      Kitamura Eri、Kotajima Tomonori、Sawada Ken、Suzuki Iwane、Shiraiwa Yoshihiro
    • Journal Title

      Scientific Reports

      Volume: 8 Issue: 1 Pages: 2196-2196

    • DOI

      10.1038/s41598-018-20741-2

    • NAID

      120007134458

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Insight into anaerobic methanotrophy from 13C/12C-amino acids and 14C/12C-ANME cells in seafloor microbial ecology2018

    • Author(s)
      Takano Yoshinori、Chikaraishi Yoshito、Imachi Hiroyuki、Miyairi Yosuke、Ogawa Nanako O.、Kaneko Masanori、Yokoyama Yusuke、Kr?ger Martin、Ohkouchi Naohiko
    • Journal Title

      Scientific Reports

      Volume: 8 Issue: 1 Pages: 14070-14070

    • DOI

      10.1038/s41598-018-31004-5

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 地衣類の生体試料における脂質分析:分子化石の可能性2020

    • Author(s)
      池田雅志, 沢田健, 中村英人
    • Organizer
      日本有機地球化学会2020年オンライン大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 北海道むかわ地域二風谷層の珪質泥岩中の炭酸塩コンクリーションの有機地球化学的研究2020

    • Author(s)
      朝日啓泰, 沢田健
    • Organizer
      日本有機地球化学会2020年オンライン大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 津軽海峡および十勝沖における海洋表層の懸濁粒子の藻類バイオマーカー分析:古環境指標の検討2020

    • Author(s)
      鈴木朝子, 沢田健, 桑田晃, 奥西武
    • Organizer
      日本有機地球化学会2020年オンライン大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 第四紀植物化石のTMAHおよびHMDSを用いた熱化学分解分析2020

    • Author(s)
      中村仁哉, 沢田健, 塚腰実
    • Organizer
      日本有機地球化学会2020年オンライン大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Horizontal variability in biomarker compositions of turbiditic sequences in the Miocene Kawabata Formation (Hokkaido, Japan)2020

    • Author(s)
      Muhammad Adam bin Ismail, Ken Sawada
    • Organizer
      日本有機地球化学会2020年オンライン大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 北海道白亜系堆積岩の花粉・パリノモルフおよびバイオマーカー分析による古植生復元2020

    • Author(s)
      早川 万穂, 池田 雅志, 沢田 健, 高嶋 礼詩, 西 弘嗣
    • Organizer
      日本有機地球化学会2020年オンライン大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 白亜紀海洋無酸素事変層準におけるケロジェンの熱分解および熱化学分解分析2020

    • Author(s)
      佐久川玄, 安藤卓人, 沢田健, 高嶋礼詩, 西弘嗣
    • Organizer
      日本有機地球化学会2020年オンライン大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] グリーンランド北西部中原生界堆積岩のバイオマーカー分析による古生態系の復元2020

    • Author(s)
      原勇貴, 安藤卓人, 沢田健
    • Organizer
      日本有機地球化学会2020年オンライン大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 北海道中新統アベツ層タービダイトの有機地球化学分析による陸源有機物の堆積過程の検討2020

    • Author(s)
      朝日啓泰, 沢田健
    • Organizer
      日本堆積学会2020年オンライン大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 生化学プロセスにおける炭素・窒素の同位体分別2020

    • Author(s)
      力石嘉人, 滝沢侑子
    • Organizer
      日本地球化学会2020年会オンライン大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Lipid biomarker analysis of culture samples of genus Tetraparma of the Parmales (Bolidophyceae)2020

    • Author(s)
      Ken Sawada, Yuki Hattori, Mutsuo Ichinomiya, Akira Kuwata
    • Organizer
      Japan Geoscience Union - American Geophysical Union (JpGU-AGU) 2020
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Paleoecological variations reconstructed by organic matter derived from lichens and fungi across the Cenomanian/Turonian boundary in the Tomamae area, northern Hokkaido, Japan2020

    • Author(s)
      Masashi A. Ikeda, Ken Sawada, Takuto Ando, Hideto Nakamura, Reishi Takashima, Hiroshi Nishi
    • Organizer
      Japan Geoscience Union - American Geophysical Union (JpGU-AGU) 2020
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Evaluation for transport processes of paleo-tsunami by organic geochemical analyses of peat sediments in eastern Hokkaido, Japan2020

    • Author(s)
      Hiroyasu Asahi, Ken Sawada, Satoshi Furota
    • Organizer
      Japan Geoscience Union - American Geophysical Union (JpGU-AGU) 2020
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Variations in sea surface environments recorded by algal biomarkers in the Japan Sea off the western Hokkaido (IODP Site U1422) over the last 700 ky2020

    • Author(s)
      Asako Suzuki, Saki Yano, Ken Sawada, Satoshi Furota, Tomohisa Irino
    • Organizer
      Japan Geoscience Union - American Geophysical Union (JpGU-AGU) 2020
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Evaluation of plant-fragment concentration system in the turbiditic sequence by terrigenous biomarker analysis of sediments from the Kawabata Formation, Yubari area, central Hokkaido, Japan2020

    • Author(s)
      Muhammad Adam bin Ismail, Hiroyasu Asahi, Satoshi Furota, Ken Sawada
    • Organizer
      Japan Geoscience Union - American Geophysical Union (JpGU-AGU) 2020
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Palynomorph assemblage in sedimentary rocks of the Mesoproterozoic Qaanaaq Formation from northwestern Greenland2020

    • Author(s)
      Yuuki Hara, Takuto Ando, Ken Sawada
    • Organizer
      Japan Geoscience Union - American Geophysical Union (JpGU-AGU) 2020
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Enhanced dinoflagellate productivity by ocean stratification and eutrophication in the Anthropocene, Miocene, and Cretaceous2020

    • Author(s)
      Takuto Ando, Ken Sawada
    • Organizer
      Japan Geoscience Union - American Geophysical Union (JpGU-AGU) 2020
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Temporal variability of the depth distribution of organic carbon burial in the Japan Sea during the Last 1.5 M.Y. based on IODP Exp. 346 sediment cores2020

    • Author(s)
      Irino, T., Giosan, L., Tada, R., and Ikehara, K.
    • Organizer
      Chapman Conference on the Evolution of the Monsoon, Biosphere and Mountain Building in Cenozoic Asia
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Paleoenvironmental changes of sea surface layers recorded by biomarkers in the sediment core from the northern Japan Sea, off Hokkaido, Japan, over the last 300 ka2019

    • Author(s)
      Asako Suzuki、Ken Sawada、Satoshi Furota、Yaeko Igarashi、Tomohisa Irino
    • Organizer
      American Geophysical Union Fall Meeting 2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 北海道穂別地域に分布する上部白亜系函淵層の石炭層の有機地球化学分析による陸域古環境変動の復元2019

    • Author(s)
      舘下雄輝、沢田健、安藤卓人、中村英人、林圭一
    • Organizer
      日本地質学会第126年学術大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] タービダイト中の続成有機分子を用いた混濁流の堆積過程の検討2019

    • Author(s)
      朝日啓泰、沢田健、風呂田郷史
    • Organizer
      日本地質学会第126年学術大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 白亜系海洋無酸素事変層準堆積岩の菌類パリノモルフ分析2019

    • Author(s)
      池田雅志、沢田健、安藤卓人、高嶋礼詩、西弘嗣
    • Organizer
      日本地質学会第126年学術大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 滋賀県野洲川から産した鮮新世樹幹化石の黒色化作用2019

    • Author(s)
      中村仁哉、沢田健、池田雅志、中村英人、塚腰実
    • Organizer
      日本地質学会第126年学術大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 深海堆積物に見出される陸上植物由来テルペン炭化水素について2019

    • Author(s)
      沢田健、青柳治叡、小林まどか、風呂田郷史、中村英人
    • Organizer
      日本地球化学会第66回年会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 島根県中海の堆積物コアにおけるアルケノン古水温変動の復元2019

    • Author(s)
      服部由季、沢田健、安藤卓人、中村英人、廣瀬孝太郎
    • Organizer
      日本地球化学会第66回年会
    • Related Report
      2019 Annual Research Report
  • [Presentation] ステロイド組成による基礎生産者群集指標の提案:瀬戸内海堆積物における珪藻殻群集との比較2019

    • Author(s)
      安藤卓人、廣瀬孝太郎、中村英人、沢田健
    • Organizer
      日本地球化学会第66回年会
    • Related Report
      2019 Annual Research Report
  • [Presentation] パルマ藻Tetraparma属の培養試料における脂質バイオマーカー分析2019

    • Author(s)
      沢田健、服部由季、一宮睦雄、桑田晃
    • Organizer
      第37回有機地球化学シンポジウム(2019年会)
    • Related Report
      2019 Annual Research Report
  • [Presentation] 北海道東部地域の津波堆積物中の続成有機分子に注目した古津波評価2019

    • Author(s)
      朝日啓泰、沢田健、風呂田郷史、林圭一
    • Organizer
      第37回有機地球化学シンポジウム(2019年会)
    • Related Report
      2019 Annual Research Report
  • [Presentation] 地衣類の生体試料の炭化水素分析:化学分類・環境指標の可能性2019

    • Author(s)
      池田雅志、沢田健、中村英人
    • Organizer
      第37回有機地球化学シンポジウム(2019年会)
    • Related Report
      2019 Annual Research Report
  • [Presentation] 島根県中海・宍道湖の堆積物中の藻類バイオマーカーに記録された環境変動2019

    • Author(s)
      服部由季、沢田健、安藤卓人、中村英人、廣瀬孝太郎、瀬戸浩二
    • Organizer
      第37回有機地球化学シンポジウム(2019年会)
    • Related Report
      2019 Annual Research Report
  • [Presentation] 日本海北海道沖IODP Site U1422の堆積物コアのバイオマーカー分析による過去30万年間の海洋環境変動の復元2019

    • Author(s)
      鈴木朝子、沢田健、風呂田郷史、五十嵐八枝子、入野智久
    • Organizer
      第37回有機地球化学シンポジウム(2019年会)
    • Related Report
      2019 Annual Research Report
  • [Presentation] 樹幹化石の熱化学分解およびバイオマーカー分析からの化石化作用の検討2019

    • Author(s)
      中村仁哉、沢田健、池田雅志、中村英人、塚腰 実
    • Organizer
      第37回有機地球化学シンポジウム(2019年会)
    • Related Report
      2019 Annual Research Report
  • [Presentation] Variations in sea surface environments recorded by algal biomarkers in the Japan Sea off the western coast of Hokkaido (IODP Site U1422) over the last 250 ka2019

    • Author(s)
      Asako Suzuki、Ken Sawada、Satoshi Furota、Yaeko Igarashi、Tomohisa Irino
    • Organizer
      日本地球惑星科学連合2019年大会
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 北海道夕張地域中新統川端層のBoumaシークエンスを示す混濁流堆積層の有機物分析による植物片濃集機構の解明2019

    • Author(s)
      朝日啓泰、風呂田郷史、沢田健
    • Organizer
      日本地球惑星科学連合2019年大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 北海道苫前地域のセノマニアン/チューロニアン境界堆積岩の植物バイオマーカー分析による陸域古植生変動の復元2019

    • Author(s)
      池田雅志、沢田健、安藤卓人、中村英人、高嶋礼詩、西弘嗣
    • Organizer
      日本地球惑星科学連合2019年大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 滋賀県野洲川から産した鮮新世樹幹化石の化石化過程:有機地球化学分析によるアプローチ2019

    • Author(s)
      中村仁哉、沢田健、池田雅志、中村英人、塚腰実
    • Organizer
      日本地球惑星科学連合2019年大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 分子化石から太古の地球環境を探る2019

    • Author(s)
      沢田健
    • Organizer
      日本質量分析学会第25回北海道談話会講演会
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] Hydrogen isotopic composition of fatty acids, sterols, and phytol: autotrophic vs. heterotrophic production2019

    • Author(s)
      Chikaraishi Yoshito
    • Organizer
      The 29th International Meeting of Organic Geochemistry
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Organic geochemical records of paleo-tsunami in peat sediments of the Akkeshi area, eastern Hokkaido, Japan2018

    • Author(s)
      Hiroyasu Asahi、Ken Sawada、Satoshi Furota、Keiich Hayashi、Yoshihiro Kase
    • Organizer
      American Geophysical Union Fall Meeting 2018
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Terrestrial environmental changes reconstructed by non-vascular plant biomarkers across the Cenomanian/Turonian boundary in the Tomamae area, northern Hokkaido, Japan2018

    • Author(s)
      Masashi Ikeda、Ken Sawada、Takuto Ando、Hideto Nakamura、Reishi Takashima、Hiroshi Nishi
    • Organizer
      American Geophysical Union Fall Meeting 2018
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Variability of alkenone producers recorded in brackish lacustrine sediments of Lake Nakaumi, western Japan2018

    • Author(s)
      Yuki Hattori、Ken Sawada、Takuto Ando、Hideto Nakamura、Kotaro Hirose
    • Organizer
      American Geophysical Union Fall Meeting 2018
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 植物由来テルペノイドによる古植生変動の復元:北大西洋イベリア半島西沖の更新世堆積物での応用例2018

    • Author(s)
      矢能冴紀、風呂田郷史、沢田健
    • Organizer
      日本地質学会第125年学術大会(特別大会)
    • Related Report
      2018 Annual Research Report
  • [Presentation] 中海・瀬戸内海の表層堆積物を用いたケロジェン・パリノモルフ観察法の検討2018

    • Author(s)
      服部由季、沢田健、安藤卓人、中村英人、廣瀬孝太郎
    • Organizer
      日本地質学会第125年学術大会(特別大会)
    • Related Report
      2018 Annual Research Report
  • [Presentation] 北海道苫前地域のセノマニアン/チューロニアン境界堆積岩中の地衣類バイオマーカーによる古環境・古生態変動の復元2018

    • Author(s)
      池田雅志、沢田健、安藤卓人、中村英人、高嶋礼詩、西弘嗣
    • Organizer
      日本地質学会第125年学術大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 北海道厚岸地域の泥炭堆積物のバイオマーカーおよびケロジェン分析による津波堆積物の堆積過程の検討2018

    • Author(s)
      朝日啓泰、沢田健、風呂田郷史、林圭一、加瀬善洋
    • Organizer
      日本地質学会第125年学術大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Paleoenvironmental reconstruction using resistant macromolecules in the Cretaceous terrestrial plant fossils and kerogens2018

    • Author(s)
      Ken Sawada、Yuma Miyata、Hideto Nakamura
    • Organizer
      日本地球惑星科学連合2018年大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Paleoecological variations in marine producers of the Andaman Sea during the late Miocene reconstructed by algal biomarkers in sediments from site U14472018

    • Author(s)
      Takuto Ando、Ken Sawada
    • Organizer
      日本地球惑星科学連合2018年大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 北海道厚岸地域の泥炭堆積物の有機物分析による古津波復元2018

    • Author(s)
      朝日啓泰、沢田健、風呂田郷史、林圭一、加瀬善洋
    • Organizer
      日本地球惑星科学連合2018年大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 北海道苫前地域のセノマニアン/チューロニアン境界堆積岩中のパイオニア植物バイオマーカーに記録された古環境変動2018

    • Author(s)
      池田雅志、沢田健、安藤卓人、中村英人、高嶋礼詩、西弘嗣
    • Organizer
      日本地球惑星科学連合2018年大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 中海における藻類バイオマーカーを用いた古環境復元~特にアルケノン古水温に注目して2018

    • Author(s)
      服部由季、沢田健、安藤卓人、中村英人、廣瀬孝太郎
    • Organizer
      日本地球惑星科学連合2018年大会
    • Related Report
      2018 Annual Research Report
  • [Remarks] 北海道大学理学研究院 地球惑星科学部門 生物/有機地球化学研究室

    • URL

      https://www.ep.sci.hokudai.ac.jp/~sawadak

    • Related Report
      2020 Annual Research Report
  • [Remarks] 北海道大学理学研究院 地球惑星科学部門 地球生物圏変動学研究グループ

    • URL

      https://www.ep.sci.hokudai.ac.jp/~mmgc

    • Related Report
      2020 Annual Research Report
  • [Remarks] 北海道大学理学研究院・地球惑星科学部門・生物/有機地球化学研究室

    • URL

      https://www.ep.sci.hokudai.ac.jp/~sawadak

    • Related Report
      2019 Annual Research Report 2018 Annual Research Report
  • [Remarks] 北海道大学理学研究院・地球惑星科学部門・地球生物圏変動学研究グループ

    • URL

      https://www.ep.sci.hokudai.ac.jp/~mmgc

    • Related Report
      2019 Annual Research Report 2018 Annual Research Report

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Published: 2018-04-23   Modified: 2022-01-27  

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