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Environmental Sciences

D-Index
62
Citations
13476
World Ranking
2610
National Ranking
31

Overview

Naohiko Ohkouchi is affiliated with the Japan Agency for Marine-Earth Science and Technology in Japan. Their research spans several main fields including Environmental Science and Earth and Planetary Sciences, with significant contributions also in subfields such as Ecology, Atmospheric Science, Oceanography, Astronomy and Astrophysics, and Global and Planetary Change.

The scientist's work focuses on key topics including Isotope Analysis in Ecology, Geology and Paleoclimatology Research, Marine and Coastal Ecosystems, Astro and Planetary Science, Marine Biology and Ecology Research, Methane Hydrates and Related Phenomena, as well as Geochemistry and Elemental Analysis.

Recent papers authored or coauthored by Naohiko Ohkouchi include:

  • Soluble organic molecules in samples of the carbonaceous asteroid (162173) Ryugu, 2023, Science
  • Timing and pathways of East Antarctic Ice Sheet retreat, 2020, Quaternary Science Reviews
  • Uracil in the carbonaceous asteroid (162173) Ryugu, 2023, Nature Communications
  • Monsoons, Upwelling, and the Deoxygenation of the Northwestern Indian Ocean in Response to Middle to Late Miocene Global Climatic Shifts, 2020, Paleoceanography and Paleoclimatology
  • Marine Os isotopic evidence for multiple volcanic episodes during Cretaceous Oceanic Anoxic Event 1b, 2020, Scientific Reports

Naohiko Ohkouchi has collaborated extensively with several frequent co-authors, including:

  • Nanako O. Ogawa
  • Yoshinori Takano
  • Toshihiro Yoshimura
  • Naoto F. Ishikawa
  • Yoshito Chikaraishi

The scientist's publications appear regularly in journals and venues such as:

  • Progress in Earth and Planetary Science
  • Nature Communications
  • Frontiers in Marine Science
  • Frontiers in Earth Science
  • Goldschmidt Abstracts

Best Publications

  • Determination of aquatic food-web structure based on compound-specific nitrogen isotopic composition of amino acids

    Yoshito Chikaraishi;Nanako O. Ogawa;Yuichiro Kashiyama;Yoshinori Takano

  • Exploring deep microbial life in coal-bearing sediment down to ~2.5 km below the ocean floor

    Fumio Inagaki;Kai-Uwe Hinrichs;Y Kubo;M W Bowles

  • Metabolic control of nitrogen isotope composition of amino acids in macroalgae and gastropods: implications for aquatic food web studies

    Yoshito Chikaraishi;Yuichiro Kashiyama;Nanako O. Ogawa;Hiroshi Kitazato

  • Advances in the application of amino acid nitrogen isotopic analysis in ecological and biogeochemical studies

    Naohiko Ohkouchi;Yoshito Chikaraishi;Yoshito Chikaraishi;Hilary G. Close;Brian Fry

  • Ontong Java Plateau eruption as a trigger for the early Aptian oceanic anoxic event

    Maria Luisa G. Tejada;Maria Luisa G. Tejada;Katsuhiko Suzuki;Junichiro Kuroda;Rodolfo Coccioni

  • Spatial and Temporal Offsets Between Proxy Records in a Sediment Drift

    Nao Ohkouchi;Timothy I. Eglinton;Lloyd D. Keigwin;John M. Hayes

  • Soluble organic molecules in samples of the carbonaceous asteroid (162173) Ryugu

    Unknown

  • Extraterrestrial ribose and other sugars in primitive meteorites.

    Yoshihiro Furukawa;Yoshito Chikaraishi;Yoshito Chikaraishi;Naohiko Ohkouchi;Nanako O. Ogawa

  • High-resolution food webs based on nitrogen isotopic composition of amino acids.

    Yoshito Chikaraishi;Shawn A. Steffan;Nanako O. Ogawa;Naoto F. Ishikawa

  • Contemporaneous massive subaerial volcanism and late cretaceous Oceanic Anoxic Event 2

    Junichiro Kuroda;Nanako O. Ogawa;Masaharu Tanimizu;Millard F. Coffin

  • A primordial and reversible TCA cycle in a facultatively chemolithoautotrophic thermophile

    Takuro Nunoura;Yoshito Chikaraishi;Yoshito Chikaraishi;Rikihisa Izaki;Takashi Suwa

  • New organic reference materials for carbon- and nitrogen-stable isotope ratio measurements provided by Center for Ecological Research, Kyoto University, and Institute of Biogeosciences, Japan Agency for Marine-Earth Science and Technology

    Ichiro Tayasu;Riyo Hirasawa;Nanako O. Ogawa;Naohiko Ohkouchi

  • Geographical origin of polished rice based on multiple element and stable isotope analyses.

    Yaeko Suzuki;Yoshito Chikaraishi;Nanako O. Ogawa;Naohiko Ohkouchi

  • Microbes are trophic analogs of animals

    Shawn A. Steffan;Yoshito Chikaraishi;Cameron R. Currie;Heidi Horn

  • Asynchronous alkenone and foraminifera records from the Benguela Upwelling System

    Gesine Mollenhauer;Timothy I Eglinton;Naohiko Ohkouchi;Ralph R Schneider

  • Origins of archaeal tetraether lipids in sediments : Insights from radiocarbon analysis

    Sunita R. Shah;Gesine Mollenhauer;Naohiko Ohkouchi;Timothy I. Eglinton

  • 15N/14N ratios of amino acids as a tool for studying terrestrial food webs: a case study of terrestrial insects (bees, wasps, and hornets)

    Yoshito Chikaraishi;Nanako O. Ogawa;Hideyuki Doi;Naohiko Ohkouchi

  • Different ingestion patterns of 13C-labeled bacteria and algae by deep-sea benthic foraminifera

    Hidetaka Nomaki;Petra Heinz;Takeshi Nakatsuka;Motohiro Shimanaga

  • Widespread collapse of the Ross Ice Shelf during the late Holocene

    Yusuke Yokoyama;Yusuke Yokoyama;John B. Anderson;Masako Yamane;Masako Yamane;Lauren M. Simkins

  • Biochemical and physiological bases for the use of carbon and nitrogen isotopes in environmental and ecological studies

    Naohiko Ohkouchi;Nanako O Ogawa;Yoshito Chikaraishi;Hiroyuki Tanaka

  • Characterization and production and consumption processes of N2O emitted from temperate agricultural soils determined via isotopomer ratio analysis

    Sakae Toyoda;Midori Yano;Sei-ichi Nishimura;Hiroko Akiyama

  • Sedimentary membrane lipids recycled by deep-sea benthic archaea

    Yoshinori Takano;Yoshito Chikaraishi;Nanako O. Ogawa;Hidetaka Nomaki

Frequent Co-Authors

Yoshito Chikaraishi
Yoshito Chikaraishi Japan Agency for Marine-Earth Science and Technology
Nanako O. Ogawa
Nanako O. Ogawa Japan Agency for Marine-Earth Science and Technology
Yusuke Yokoyama
Yusuke Yokoyama University of Tokyo
Hiroshi Kitazato
Hiroshi Kitazato Tokyo University of Marine Science and Technology
Hodaka Kawahata
Hodaka Kawahata University of Tokyo
Katsuhiko Suzuki
Katsuhiko Suzuki Japan Agency for Marine-Earth Science and Technology
Francisco J Jiménez-Espejo
Francisco J Jiménez-Espejo Spanish National Research Council
Ryuji Tada
Ryuji Tada University of Tokyo
Toshi Nagata
Toshi Nagata University of Tokyo

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