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Ken Takai

D-Index & Metrics

Biology and Biochemistry

D-Index
92
Citations
27050
World Ranking
2239
National Ranking
135

Ken Takai publication distribution in Biology and Biochemistry in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Biology and Biochemistry in 2026. The highlighted bar marks where Ken Takai sits on this spectrum.

47–56 publications: 8 scientists 57–66 publications: 35 scientists 67–76 publications: 106 scientists 77–86 publications: 231 scientists 87–96 publications: 414 scientists 97–106 publications: 546 scientists 107–116 publications: 704 scientists 117–126 publications: 849 scientists 127–136 publications: 980 scientists 137–146 publications: 942 scientists 147–156 publications: 969 scientists 157–166 publications: 950 scientists 167–176 publications: 951 scientists 177–186 publications: 915 scientists 187–196 publications: 787 scientists 197–206 publications: 841 scientists 207–216 publications: 735 scientists 217–226 publications: 709 scientists 227–236 publications: 651 scientists 237–246 publications: 605 scientists 247–256 publications: 510 scientists 257–266 publications: 524 scientists 267–276 publications: 434 scientists 277–286 publications: 418 scientists 287–296 publications: 350 scientists 297–306 publications: 363 scientists 307–316 publications: 315 scientists 317–326 publications: 296 scientists 327–336 publications: 261 scientists 337–346 publications: 240 scientists 347–356 publications: 219 scientists 357–366 publications: 197 scientists 367–376 publications: 154 scientists 377–386 publications: 161 scientists 387–396 publications: 155 scientists 397–406 publications: 145 scientists 407–416 publications: 124 scientists 417–426 publications: 112 scientists 427–436 publications: 132 scientists 437–446 publications: 116 scientists 447–456 publications: 99 scientists 457–466 publications: 81 scientists 467–476 publications: 91 scientists 477–486 publications: 80 scientists 487–496 publications: 80 scientists 497–506 publications: 60 scientists 507–516 publications: 36 scientists 517–526 publications: 46 scientists 527–536 publications: 54 scientists 537–546 publications: 44 scientists 547–556 publications: 43 scientists 557–566 publications: 43 scientists 567–576 publications: 42 scientists 577–586 publications: 25 scientists 587–596 publications: 34 scientists 597–606 publications: 23 scientists 607–616 publications: 33 scientists 617–626 publications: 31 scientists 627–636 publications: 27 scientists 637–646 publications: 25 scientists 647–656 publications: 28 scientists 657–666 publications: 34 scientists 667–676 publications: 18 scientists 677–686 publications: 16 scientists 687–696 publications: 10 scientists 697–706 publications: 12 scientists 707–716 publications: 21 scientists 717–726 publications: 12 scientists 727–736 publications: 12 scientists 737–746 publications: 10 scientists 747–756 publications: 7 scientists 757–766 publications: 13 scientists 767–776 publications: 15 scientists 777–786 publications: 13 scientists 787–796 publications: 9 scientists 797–806 publications: 9 scientists 807–816 publications: 7 scientists 817–826 publications: 4 scientists 827–836 publications: 9 scientists 837–846 publications: 7 scientists 847–856 publications: 3 scientists 857–866 publications: 5 scientists 867–876 publications: 5 scientists 877–886 publications: 11 scientists 887–896 publications: 3 scientists 897–906 publications: 4 scientists 907–916 publications: 7 scientists 917–926 publications: 5 scientists 927–936 publications: 6 scientists 937–946 publications: 6 scientists 947–956 publications: 3 scientists 957–966 publications: 7 scientists 967–976 publications: 2 scientists 977–986 publications: 2 scientists 987–996 publications: 1 scientists 997–1,006 publications: 5 scientists 1,007–1,016 publications: 2 scientists 1,017–1,026 publications: 2 scientists 1,027 publications: 1 scientists 1,028+ publications: 100 scientists
47 publications 1,028+

This scientist: 603 publications — 97th percentile

97% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,028 publications or more.

Ken Takai D-index placement in Biology and Biochemistry in 2026

The chart shows the D-index (discipline H-index) distribution of Biology and Biochemistry scientists ranked by Research.com in 2026. The highlighted bar marks where Ken Takai sits on this spectrum.

40–41 D-Index: 80 scientists 42–43 D-Index: 183 scientists 44–45 D-Index: 317 scientists 46–47 D-Index: 504 scientists 48–49 D-Index: 718 scientists 50–51 D-Index: 900 scientists 52–53 D-Index: 1,026 scientists 54–55 D-Index: 1,150 scientists 56–57 D-Index: 1,236 scientists 58–59 D-Index: 1,253 scientists 60–61 D-Index: 1,163 scientists 62–63 D-Index: 1,131 scientists 64–65 D-Index: 1,032 scientists 66–67 D-Index: 897 scientists 68–69 D-Index: 814 scientists 70–71 D-Index: 715 scientists 72–73 D-Index: 709 scientists 74–75 D-Index: 596 scientists 76–77 D-Index: 512 scientists 78–79 D-Index: 473 scientists 80–81 D-Index: 412 scientists 82–83 D-Index: 373 scientists 84–85 D-Index: 358 scientists 86–87 D-Index: 285 scientists 88–89 D-Index: 273 scientists 90–91 D-Index: 227 scientists 92–93 D-Index: 208 scientists 94–95 D-Index: 193 scientists 96–97 D-Index: 153 scientists 98–99 D-Index: 157 scientists 100–101 D-Index: 148 scientists 102–103 D-Index: 120 scientists 104–105 D-Index: 113 scientists 106–107 D-Index: 100 scientists 108–109 D-Index: 86 scientists 110–111 D-Index: 67 scientists 112–113 D-Index: 72 scientists 114–115 D-Index: 73 scientists 116–117 D-Index: 64 scientists 118–119 D-Index: 53 scientists 120–121 D-Index: 60 scientists 122–123 D-Index: 54 scientists 124–125 D-Index: 43 scientists 126–127 D-Index: 38 scientists 128–129 D-Index: 49 scientists 130–131 D-Index: 26 scientists 132–133 D-Index: 18 scientists 134–135 D-Index: 23 scientists 136–137 D-Index: 32 scientists 138–139 D-Index: 32 scientists 140–141 D-Index: 27 scientists 142–143 D-Index: 19 scientists 144–145 D-Index: 22 scientists 146–147 D-Index: 12 scientists 148–149 D-Index: 16 scientists 150–151 D-Index: 14 scientists 152–153 D-Index: 10 scientists 154–155 D-Index: 13 scientists 156–157 D-Index: 10 scientists 158–159 D-Index: 7 scientists 160–161 D-Index: 9 scientists 162–163 D-Index: 13 scientists 164–165 D-Index: 4 scientists 166 D-Index: 4 scientists 167+ D-Index: 98 scientists
40 D-Index 167+

This scientist: 92 D-Index — 89th percentile

89% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 167 D-Index or more.

Overview

Ken Takai is affiliated with the Japan Agency for Marine-Earth Science and Technology. Their research intersects multiple domains within environmental science, with a particular focus on microbiology, molecular biology, and geosciences.

The scientist's recent published papers cover a range of topics and venues, highlighting interdisciplinary approaches to microbial ecology and geochemistry. These include:

  • Isolation of an archaeon at the prokaryote-eukaryote interface, 2020, Nature
  • The Scaly-foot Snail genome and implications for the origins of biomineralised armour, 2020, Nature Communications
  • Mariana serpentinite mud volcanism exhumes subducted seamount materials: implications for the origin of life, 2020, Philosophical Transactions of the Royal Society A Mathematical Physical and Engineering Sciences
  • Thioester synthesis through geoelectrochemical CO2 fixation on Ni sulfides, 2021, Communications Chemistry
  • Dual energy metabolism of the Campylobacterota endosymbiont in the chemosynthetic snail Alviniconcha marisindica, 2020, The ISME Journal

Key coauthors who frequently collaborate with Ken Takai include:

  • C.G. Wheat
  • Jeffrey G. Ryan
  • C.D. Menzies
  • R.E. Price
  • O.J. Sissmann

The researcher is active in publishing within specific academic venues. These publication venues include:

  • Zenodo (CERN European Organization for Nuclear Research)
  • OPAL (Open@LaTrobe) (La Trobe University)
  • INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY
  • Microbes and Environments
  • bioRxiv (Cold Spring Harbor Laboratory)

Ken Takai's main areas of study span environmental science broadly, with subfields covering environmental chemistry, molecular biology, astronomy and astrophysics, ecology, and oceanography.

Their research topics demonstrate a focus on:

  • Methane Hydrates and Related Phenomena
  • Microbial Community Ecology and Physiology
  • Genomics and Phylogenetic Studies
  • Geomagnetism and Paleomagnetism Studies
  • Geophysics and Gravity Measurements
  • Astro and Planetary Science
  • Solar and Space Plasma Dynamics

Best Publications

  • Rapid detection and quantification of members of the archaeal community by quantitative PCR using fluorogenic probes.

    Ken Takai;Koki Horikoshi

  • Cell proliferation at 122°C and isotopically heavy CH4 production by a hyperthermophilic methanogen under high-pressure cultivation

    Ken Takai;Kentaro Nakamura;Tomohiro Toki;Urumu Tsunogai

  • Biogeographical distribution and diversity of microbes in methane hydrate-bearing deep marine sediments on the Pacific Ocean Margin

    Fumio Inagaki;Takuro Nunoura;Satoshi Nakagawa;Andreas Teske

  • The versatile epsilon-proteobacteria: key players in sulphidic habitats.

    Barbara J. Campbell;Annette Summers Engel;Megan L. Porter;Ken Takai

  • Isolation of an archaeon at the prokaryote–eukaryote interface

    Hiroyuki Imachi;Masaru K. Nobu;Nozomi Nakahara;Nozomi Nakahara;Nozomi Nakahara;Yuki Morono

  • Genetic Diversity of Archaea in Deep-Sea Hydrothermal Vent Environments

    Ken Takai;Koki Horikoshi

  • Microbial Communities Associated with Geological Horizons in Coastal Subseafloor Sediments from the Sea of Okhotsk

    Fumio Inagaki;Masae Suzuki;Ken Takai;Hanako Oida

  • Archaeal diversity in waters from deep South African gold mines.

    Ken Takai;Duane P. Moser;Mary DeFlaun;Tullis C. Onstott

  • Sulfurovum lithotrophicum gen. nov., sp. nov., a novel sulfur-oxidizing chemolithoautotroph within the e-Proteobacteria isolated from Okinawa Trough hydrothermal sediments

    Fumio Inagaki;Ken Takai;Kenneth H. Nealson;Kenneth H. Nealson;Koki Horikoshi

  • Insights into the evolution of Archaea and eukaryotic protein modifier systems revealed by the genome of a novel archaeal group

    Takuro Nunoura;Yoshihiro Takaki;Jungo Kakuta;Shinro Nishi

  • Comparative Genomic Analysis of the Class Epsilonproteobacteria and Proposed Reclassification to Epsilonbacteraeota (phyl. nov.)

    David W. Waite;Inka Vanwonterghem;Christian Rinke;Donovan H. Parks

  • Distribution of archaea in a black smoker chimney structure.

    Ken Takai;Tetsushi Komatsu;Fumio Inagaki;Koki Horikoshi

  • Deep-sea vent chemoautotrophs: diversity, biochemistry and ecological significance

    Satoshi Nakagawa;Ken Takai

  • Sulfurimonas paralvinellae sp. nov., a novel mesophilic, hydrogen- and sulfur-oxidizing chemolithoautotroph within the Epsilonproteobacteria isolated from a deep-sea hydrothermal vent polychaete nest, reclassification of Thiomicrospira denitrificans as Sulfurimonas denitrificans comb. nov. and emended description of the genus Sulfurimonas.

    Ken Takai;Masae Suzuki;Satoshi Nakagawa;Masayuki Miyazaki

  • Hadal biosphere: Insight into the microbial ecosystem in the deepest ocean on Earth

    Takuro Nunoura;Yoshihiro Takaki;Miho Hirai;Shigeru Shimamura

  • Sulfurimonas autotrophica gen. nov., sp. nov., a novel sulfur-oxidizing ε-proteobacterium isolated from hydrothermal sediments in the Mid-Okinawa Trough

    Fumio Inagaki;Ken Takai;Hideki Kobayashi;Kenneth H. Nealson;Kenneth H. Nealson

  • Distribution, phylogenetic diversity and physiological characteristics of epsilon-Proteobacteria in a deep-sea hydrothermal field.

    Satoshi Nakagawa;Ken Takai;Fumio Inagaki;Hisako Hirayama

  • Geochemical and microbiological evidence for a hydrogen-based, hyperthermophilic subsurface lithoautotrophic microbial ecosystem (HyperSLiME) beneath an active deep-sea hydrothermal field

    Ken Takai;Toshitaka Gamo;Urumu Tsunogai;Noriko Nakayama

  • Submarine hydrothermal activity and gold-rich mineralization at Brothers Volcano, Kermadec Arc, New Zealand

    Cornel E. J. de Ronde;Gary J. Massoth;David A. Butterfield;Bruce W. Christenson

  • Deep-sea vent -proteobacterial genomes provide insights into emergence of pathogens

    Satoshi Nakagawa;Yoshihiro Takaki;Shigeru Shimamura;Anna-Louise Reysenbach

Frequent Co-Authors

Takuro Nunoura
Takuro Nunoura Japan Agency for Marine-Earth Science and Technology
Koki Horikoshi
Koki Horikoshi Japan Agency for Marine-Earth Science and Technology
Fumio Inagaki
Fumio Inagaki Japan Agency for Marine-Earth Science and Technology
Kenneth H. Nealson
Kenneth H. Nealson University of Southern California
Jun-ichiro Ishibashi
Jun-ichiro Ishibashi Kobe University
Hiroyuki Imachi
Hiroyuki Imachi Japan Agency for Marine-Earth Science and Technology
Katsuhiko Suzuki
Katsuhiko Suzuki Japan Agency for Marine-Earth Science and Technology
Yuichiro Ueno
Yuichiro Ueno Tokyo Institute of Technology
Urumu Tsunogai
Urumu Tsunogai Nagoya University
Yuki Morono
Yuki Morono Japan Agency for Marine-Earth Science and Technology

External Links

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Best Scientists Citing Ken Takai

Fumio Inagaki

Fumio Inagaki

Japan Agency for Marine-Earth Science and Technology

Publications: 75

Antje Boetius

Antje Boetius

Max Planck Society

Publications: 56

Kai-Uwe Hinrichs

Kai-Uwe Hinrichs

University of Bremen

Publications: 54

Jun-ichiro Ishibashi

Jun-ichiro Ishibashi

Kobe University

Publications: 51

Wolfgang Bach

Wolfgang Bach

University of Bremen

Publications: 49

Hailiang Dong

Hailiang Dong

China University of Geosciences

Publications: 48

Tullis C. Onstott

Tullis C. Onstott

Princeton University

Publications: 47

Yuki Morono

Yuki Morono

Japan Agency for Marine-Earth Science and Technology

Publications: 47

Chuanlun L. Zhang

Chuanlun L. Zhang

Southern University of Science and Technology

Publications: 44

Julie A. Huber

Julie A. Huber

Woods Hole Oceanographic Institution

Publications: 44

Philip Hugenholtz

Philip Hugenholtz

University of Queensland

Publications: 42

Patrick Forterre

Patrick Forterre

University of Paris-Saclay

Publications: 39

Christa Schleper

Christa Schleper

University of Vienna

Publications: 39

Andreas P Teske

Andreas P Teske

University of North Carolina at Chapel Hill

Publications: 38

Bo Barker Jørgensen

Bo Barker Jørgensen

Aarhus University

Publications: 38

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Anna-Louise Reysenbach

Portland State University

Publications: 38

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