World's Best Scientists 2026 revealed!

D-Index & Metrics

Biology and Biochemistry

D-Index
54
Citations
9706
World Ranking
15701
National Ranking
1117

Hiroyuki Imachi 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 Hiroyuki Imachi 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: 413 scientists 97–106 publications: 546 scientists 107–116 publications: 704 scientists 117–126 publications: 848 scientists 127–136 publications: 980 scientists 137–146 publications: 942 scientists 147–156 publications: 969 scientists 157–166 publications: 949 scientists 167–176 publications: 951 scientists 177–186 publications: 915 scientists 187–196 publications: 787 scientists 197–206 publications: 840 scientists 207–216 publications: 733 scientists 217–226 publications: 708 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: 417 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: 196 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: 59 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: 159 publications — 31st percentile

31% of scientists in this discipline score the same or lower.

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

Hiroyuki Imachi 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 Hiroyuki Imachi sits on this spectrum.

40–41 D-Index: 80 scientists 42–43 D-Index: 183 scientists 44–45 D-Index: 316 scientists 46–47 D-Index: 504 scientists 48–49 D-Index: 718 scientists 50–51 D-Index: 899 scientists 52–53 D-Index: 1,025 scientists 54–55 D-Index: 1,149 scientists 56–57 D-Index: 1,235 scientists 58–59 D-Index: 1,253 scientists 60–61 D-Index: 1,162 scientists 62–63 D-Index: 1,130 scientists 64–65 D-Index: 1,031 scientists 66–67 D-Index: 897 scientists 68–69 D-Index: 814 scientists 70–71 D-Index: 714 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: 71 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: 54 D-Index — 22nd percentile

22% of scientists in this discipline score the same or lower.

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

Overview

Hiroyuki Imachi is affiliated with the Japan Agency for Marine-Earth Science and Technology in Japan. Their research focuses on environmental science and biochemistry, genetics, and molecular biology, with a substantial number of publications in related fields. The primary subfields of study include molecular biology, ecology, environmental chemistry, geology, and mechanics of materials.

The scientist's work explores various topics such as microbial community ecology and physiology, methane hydrates and related phenomena, genomics and phylogenetic studies, geological and geophysical studies, hydrocarbon exploration and reservoir analysis, protist diversity and phylogeny, and enzyme structure and function.

Frequent coauthors of Hiroyuki Imachi include Yuki Morono, Miyuki Ogawara, Masanori Kaneko, Fumio Inagaki, and Masaru K. Nobu. Their collaborations are indicative of integrated research efforts within the domain of marine and molecular science.

Hiroyuki Imachi has published in several notable venues. Frequent publication outlets are:

  • Publishing Network for Geoscientific and Environmental Data (PANGAEA) (Alfred Wegener Institute for Polar and Marine Research)
  • INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY
  • Progress in Earth and Planetary Science
  • Nature
  • Science

Significant recent publications include:

  • Isolation of an archaeon at the prokaryote-eukaryote interface (2020, Nature)
  • Temperature limits to deep subseafloor life in the Nankai Trough subduction zone (2020, Science)
  • The origin and evolution of methanogenesis and Archaea are intertwined (2023, PNAS Nexus)
  • Promethearchaeum syntrophicum gen. nov., sp. nov., an anaerobic, obligately syntrophic archaeon, the first isolate of the lineage 'Asgard' archaea, and proposal of the new archaeal phylum Promethearchaeota phyl. nov. and kingdom Promethearchaeati regn. nov. (2024, INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY)
  • Eukaryotes' closest relatives are internally simple syntrophic archaea (2025, bioRxiv (Cold Spring Harbor Laboratory))

Best Publications

  • Anaerolinea thermolimosa sp. nov., Levilinea saccharolytica gen. nov., sp. nov. and Leptolinea tardivitalis gen. nov., sp. nov., novel filamentous anaerobes, and description of the new classes Anaerolineae classis nov. and Caldilineae classis nov. in the bacterial phylum Chloroflexi.

    Takeshi Yamada;Takeshi Yamada;Yuji Sekiguchi;Yuji Sekiguchi;Satoshi Hanada;Hiroyuki Imachi

  • Isolation of an archaeon at the prokaryote–eukaryote interface

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

  • Bellilinea caldifistulae gen. nov., sp. nov. and Longilinea arvoryzae gen. nov., sp. nov., strictly anaerobic, filamentous bacteria of the phylum Chloroflexi isolated from methanogenic propionate-degrading consortia.

    Takeshi Yamada;Takeshi Yamada;Hiroyuki Imachi;Hiroyuki Imachi;Akiyoshi Ohashi;Hideki Harada;Hideki Harada

  • 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

  • Methanocella paludicola gen. nov., sp. nov., a methane-producing archaeon, the first isolate of the lineage 'Rice Cluster I', and proposal of the new archaeal order Methanocellales ord. nov.

    Sanae Sakai;Hiroyuki Imachi;Hiroyuki Imachi;Satoshi Hanada;Akiyoshi Ohashi;Akiyoshi Ohashi

  • Diversity, Localization, and Physiological Properties of Filamentous Microbes Belonging to Chloroflexi Subphylum I in Mesophilic and Thermophilic Methanogenic Sludge Granules

    Takeshi Yamada;Takeshi Yamada;Yuji Sekiguchi;Yuji Sekiguchi;Hiroyuki Imachi;Yoichi Kamagata;Yoichi Kamagata

  • Pelotomaculum thermopropionicum gen. nov., sp. nov., an anaerobic, thermophilic, syntrophic propionate-oxidizing bacterium.

    Hiroyuki Imachi;Yuji Sekiguchi;Yoichi Kamagata;Satoshi Hanada

  • Methanolinea tarda gen. nov., sp. nov. a methane-producing archaeon isolated from a methanogenic digester sludge

    Hiroyuki Imachi;Sanae Sakai;Yuji Sekiguchi;Yuji Sekiguchi;Satoshi Hanada

  • Effective partial nitrification to nitrite by down-flow hanging sponge reactor under limited oxygen condition

    Hui Ping Chuang;Akiyoshi Ohashi;Hiroyuki Imachi;Madan Tandukar

  • Non-sulfate-reducing, syntrophic bacteria affiliated with desulfotomaculum cluster I are widely distributed in methanogenic environments.

    Hiroyuki Imachi;Yuji Sekiguchi;Yuji Sekiguchi;Yoichi Kamagata;Yoichi Kamagata;Alexander Loy

  • Cultivation and In Situ Detection of a Thermophilic Bacterium Capable of Oxidizing Propionate in Syntrophic Association with Hydrogenotrophic Methanogens in a Thermophilic Methanogenic Granular Sludge

    Hiroyuki Imachi;Yuji Sekiguchi;Yoichi Kamagata;Akiyoshi Ohashi

  • Isolation of Key Methanogens for Global Methane Emission from Rice Paddy Fields: a Novel Isolate Affiliated with the Clone Cluster Rice Cluster I

    Sanae Sakai;Hiroyuki Imachi;Hiroyuki Imachi;Yuji Sekiguchi;Yuji Sekiguchi;Akiyoshi Ohashi

  • Thermodesulfovibrio aggregans sp. nov. and Thermodesulfovibrio thiophilus sp. nov., anaerobic, thermophilic, sulfate-reducing bacteria isolated from thermophilic methanogenic sludge, and emended description of the genus Thermodesulfovibrio.

    Yuji Sekiguchi;Mizuho Muramatsu;Hiroyuki Imachi;Takashi Narihiro

  • Cultivation of methanogenic community from subseafloor sediments using a continuous-flow bioreactor

    Hiroyuki Imachi;Ken Aoi;Ken Aoi;Eiji Tasumi;Yumi Saito

  • Methanolinea Mesophila Sp. Nov., A Hydrogenotrophic Methanogen Isolated From Rice Field Soil, And Proposal Of The Archaeal Family Methanoregulaceae Fam. Nov. Within The Order Methanomicrobiales

    Sanae Sakai;Masayuki Ehara;Masayuki Ehara;I-Cheng Tseng;Takashi Yamaguchi

  • Pelotomaculum terephthalicum sp. nov. and Pelotomaculum isophthalicum sp. nov : two anaerobic bacteria that degrade phthalate isomers in syntrophic association with hydrogenotrophic methanogens

    Yan-Ling Qiu;Yuji Sekiguchi;Yuji Sekiguchi;Satoshi Hanada;Hiroyuki Imachi

  • Identification and Cultivation of Anaerobic, Syntrophic Long-Chain Fatty Acid-Degrading Microbes from Mesophilic and Thermophilic Methanogenic Sludges

    Masashi Hatamoto;Hiroyuki Imachi;Hiroyuki Imachi;Akiyoshi Ohashi;Hideki Harada;Hideki Harada

  • Methanoregula formicica sp. nov., a methane-producing archaeon isolated from methanogenic sludge.

    Yuto Yashiro;Sanae Sakai;Masayuki Ehara;Masayuki Ehara;Masayuki Miyazaki

  • Improved in situ hybridization efficiency with locked-nucleic-acid-incorporated DNA probes.

    Kengo Kubota;Akiyoshi Ohashi;Hiroyuki Imachi;Hiroyuki Imachi;Hideki Harada

  • Pelotomaculum propionicicum sp. nov., an anaerobic, mesophilic, obligately syntrophic, propionate-oxidizing bacterium.

    Hiroyuki Imachi;Hiroyuki Imachi;Sanae Sakai;Akiyoshi Ohashi;Hideki Harada;Hideki Harada

Frequent Co-Authors

Akiyoshi Ohashi
Akiyoshi Ohashi Hiroshima University
Hideki Harada
Hideki Harada Tohoku University
Yoichi Kamagata
Yoichi Kamagata National Institute of Advanced Industrial Science and Technology
Ken Takai
Ken Takai Japan Agency for Marine-Earth Science and Technology
Yuji Sekiguchi
Yuji Sekiguchi National Institute of Advanced Industrial Science and Technology
Fumio Inagaki
Fumio Inagaki Japan Agency for Marine-Earth Science and Technology
Yuki Morono
Yuki Morono Japan Agency for Marine-Earth Science and Technology
Takuro Nunoura
Takuro Nunoura Japan Agency for Marine-Earth Science and Technology
Naohiko Ohkouchi
Naohiko Ohkouchi Japan Agency for Marine-Earth Science and Technology
Yusuke Yokoyama
Yusuke Yokoyama University of Tokyo

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