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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Environmental Sciences 55 3833 3662 57 55 207 11897

Takuro Nunoura publications per year

The chart shows the history of publications by Takuro Nunoura between 1998 and 2026, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Takuro Nunoura published across 29 years, from 1998 to 2026, averaging 7.9 papers a year. Output peaked at 19 publications in 2016. 12 of the 228 publications appeared in the last two years.

No. of publications
5 10 15
Bar chart. Horizontal axis: year, 1998 to 2026. Vertical axis: number of publications, 0 to 19. Peak 19 publications in 2016. 1998: 2 publications 1999: 0 publications 2000: 0 publications 2001: 1 publication 2002: 3 publications 2003: 8 publications 2004: 2 publications 2005: 6 publications 2006: 12 publications 2007: 8 publications 2008: 8 publications 2009: 6 publications 2010: 3 publications 2011: 4 publications 2012: 14 publications 2013: 13 publications 2014: 13 publications 2015: 11 publications 2016: 19 publications 2017: 10 publications 2018: 17 publications 2019: 5 publications 2020: 10 publications 2021: 14 publications 2022: 9 publications 2023: 10 publications 2024: 8 publications 2025: 10 publications 2026: 2 publications
1998 2026

228 publications in total across all disciplines

View publications per year as a table
Takuro Nunoura: publications per year, 1998 to 2026
Year Publications
1998 2
1999 0
2000 0
2001 1
2002 3
2003 8
2004 2
2005 6
2006 12
2007 8
2008 8
2009 6
2010 3
2011 4
2012 14
2013 13
2014 13
2015 11
2016 19
2017 10
2018 17
2019 5
2020 10
2021 14
2022 9
2023 10
2024 8
2025 10
2026 2
Total 228
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Takuro Nunoura publication distribution in Environmental Sciences in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Environmental Sciences in 2026. The highlighted bar marks where Takuro Nunoura sits on this spectrum.

No. of scientists
200 400 600
Bar chart with 66 bars. Horizontal axis: publications, 41–50 to 690+. Vertical axis: number of scientists, 0 to 617. Most scientists, 617, have 121–130 publications. The last bar groups every scientist with 690 publications or more. The highlighted bar, 201–210 publications, is where this scientist sits. 41–50 publications: 21 scientists 51–60 publications: 62 scientists 61–70 publications: 133 scientists 71–80 publications: 257 scientists 81–90 publications: 361 scientists 91–100 publications: 440 scientists 101–110 publications: 492 scientists 111–120 publications: 541 scientists 121–130 publications: 617 scientists 131–140 publications: 544 scientists 141–150 publications: 541 scientists 151–160 publications: 539 scientists 161–170 publications: 444 scientists 171–180 publications: 444 scientists 181–190 publications: 400 scientists 191–200 publications: 377 scientists 201–210 publications: 318 scientists 211–220 publications: 282 scientists 221–230 publications: 263 scientists 231–240 publications: 220 scientists 241–250 publications: 217 scientists 251–260 publications: 180 scientists 261–270 publications: 181 scientists 271–280 publications: 155 scientists 281–290 publications: 130 scientists 291–300 publications: 127 scientists 301–310 publications: 130 scientists 311–320 publications: 85 scientists 321–330 publications: 106 scientists 331–340 publications: 80 scientists 341–350 publications: 83 scientists 351–360 publications: 75 scientists 361–370 publications: 69 scientists 371–380 publications: 52 scientists 381–390 publications: 54 scientists 391–400 publications: 56 scientists 401–410 publications: 44 scientists 411–420 publications: 40 scientists 421–430 publications: 36 scientists 431–440 publications: 25 scientists 441–450 publications: 25 scientists 451–460 publications: 32 scientists 461–470 publications: 29 scientists 471–480 publications: 21 scientists 481–490 publications: 26 scientists 491–500 publications: 26 scientists 501–510 publications: 17 scientists 511–520 publications: 19 scientists 521–530 publications: 15 scientists 531–540 publications: 22 scientists 541–550 publications: 12 scientists 551–560 publications: 15 scientists 561–570 publications: 11 scientists 571–580 publications: 19 scientists 581–590 publications: 9 scientists 591–600 publications: 9 scientists 601–610 publications: 7 scientists 611–620 publications: 11 scientists 621–630 publications: 5 scientists 631–640 publications: 5 scientists 641–650 publications: 6 scientists 651–660 publications: 3 scientists 661–670 publications: 3 scientists 671–680 publications: 4 scientists 681–689 publications: 4 scientists 690+ publications: 100 scientists
41–50 publications 690+

This scientist: 207 publications — 67th percentile

67% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 690 publications or more.

View publications distribution as a table
Number of Environmental Sciences scientists by publication count, Research.com 2026 ranking edition. Based on 9,676 ranked scientists.
Publications Scientists This scientist
41–50 21
51–60 62
61–70 133
71–80 257
81–90 361
91–100 440
101–110 492
111–120 541
121–130 617
131–140 544
141–150 541
151–160 539
161–170 444
171–180 444
181–190 400
191–200 377
201–210 318 207
211–220 282
221–230 263
231–240 220
241–250 217
251–260 180
261–270 181
271–280 155
281–290 130
291–300 127
301–310 130
311–320 85
321–330 106
331–340 80
341–350 83
351–360 75
361–370 69
371–380 52
381–390 54
391–400 56
401–410 44
411–420 40
421–430 36
431–440 25
441–450 25
451–460 32
461–470 29
471–480 21
481–490 26
491–500 26
501–510 17
511–520 19
521–530 15
531–540 22
541–550 12
551–560 15
561–570 11
571–580 19
581–590 9
591–600 9
601–610 7
611–620 11
621–630 5
631–640 5
641–650 6
651–660 3
661–670 3
671–680 4
681–689 4
690+ 100
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Takuro Nunoura D-index placement in Environmental Sciences in 2026

The chart shows the D-index (discipline H-index) distribution of Environmental Sciences scientists ranked by Research.com in 2026. The highlighted bar marks where Takuro Nunoura sits on this spectrum.

No. of scientists
100 200 300
Bar chart with 97 bars. Horizontal axis: D-Index, 30 to 126+. Vertical axis: number of scientists, 0 to 348. Most scientists, 348, have 45 D-Index. The last bar groups every scientist with 126 D-Index or more. The highlighted bar, 55 D-Index, is where this scientist sits. 30 D-Index: 12 scientists 31 D-Index: 26 scientists 32 D-Index: 51 scientists 33 D-Index: 88 scientists 34 D-Index: 123 scientists 35 D-Index: 163 scientists 36 D-Index: 206 scientists 37 D-Index: 267 scientists 38 D-Index: 265 scientists 39 D-Index: 275 scientists 40 D-Index: 321 scientists 41 D-Index: 343 scientists 42 D-Index: 305 scientists 43 D-Index: 336 scientists 44 D-Index: 330 scientists 45 D-Index: 348 scientists 46 D-Index: 291 scientists 47 D-Index: 275 scientists 48 D-Index: 272 scientists 49 D-Index: 273 scientists 50 D-Index: 263 scientists 51 D-Index: 232 scientists 52 D-Index: 266 scientists 53 D-Index: 217 scientists 54 D-Index: 198 scientists 55 D-Index: 177 scientists 56 D-Index: 202 scientists 57 D-Index: 204 scientists 58 D-Index: 166 scientists 59 D-Index: 177 scientists 60 D-Index: 166 scientists 61 D-Index: 152 scientists 62 D-Index: 143 scientists 63 D-Index: 150 scientists 64 D-Index: 124 scientists 65 D-Index: 119 scientists 66 D-Index: 120 scientists 67 D-Index: 118 scientists 68 D-Index: 82 scientists 69 D-Index: 98 scientists 70 D-Index: 94 scientists 71 D-Index: 105 scientists 72 D-Index: 74 scientists 73 D-Index: 84 scientists 74 D-Index: 70 scientists 75 D-Index: 67 scientists 76 D-Index: 78 scientists 77 D-Index: 60 scientists 78 D-Index: 59 scientists 79 D-Index: 52 scientists 80 D-Index: 47 scientists 81 D-Index: 38 scientists 82 D-Index: 48 scientists 83 D-Index: 42 scientists 84 D-Index: 42 scientists 85 D-Index: 43 scientists 86 D-Index: 29 scientists 87 D-Index: 37 scientists 88 D-Index: 29 scientists 89 D-Index: 30 scientists 90 D-Index: 34 scientists 91 D-Index: 20 scientists 92 D-Index: 22 scientists 93 D-Index: 17 scientists 94 D-Index: 19 scientists 95 D-Index: 24 scientists 96 D-Index: 21 scientists 97 D-Index: 20 scientists 98 D-Index: 24 scientists 99 D-Index: 17 scientists 100 D-Index: 17 scientists 101 D-Index: 21 scientists 102 D-Index: 25 scientists 103 D-Index: 18 scientists 104 D-Index: 26 scientists 105 D-Index: 20 scientists 106 D-Index: 15 scientists 107 D-Index: 10 scientists 108 D-Index: 13 scientists 109 D-Index: 15 scientists 110 D-Index: 12 scientists 111 D-Index: 8 scientists 112 D-Index: 7 scientists 113 D-Index: 9 scientists 114 D-Index: 6 scientists 115 D-Index: 12 scientists 116 D-Index: 7 scientists 117 D-Index: 8 scientists 118 D-Index: 3 scientists 119 D-Index: 5 scientists 120 D-Index: 7 scientists 121 D-Index: 2 scientists 122 D-Index: 4 scientists 123 D-Index: 8 scientists 124 D-Index: 7 scientists 125 D-Index: 9 scientists 126+ D-Index: 92 scientists
30 D-Index 126+

This scientist: 55 D-Index — 61st percentile

61% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 126 D-Index or more.

View D-Index distribution as a table
Number of Environmental Sciences scientists by D-index, Research.com 2026 ranking edition. Based on 9,676 ranked scientists.
D-Index Scientists This scientist
30 12
31 26
32 51
33 88
34 123
35 163
36 206
37 267
38 265
39 275
40 321
41 343
42 305
43 336
44 330
45 348
46 291
47 275
48 272
49 273
50 263
51 232
52 266
53 217
54 198
55 177 55
56 202
57 204
58 166
59 177
60 166
61 152
62 143
63 150
64 124
65 119
66 120
67 118
68 82
69 98
70 94
71 105
72 74
73 84
74 70
75 67
76 78
77 60
78 59
79 52
80 47
81 38
82 48
83 42
84 42
85 43
86 29
87 37
88 29
89 30
90 34
91 20
92 22
93 17
94 19
95 24
96 21
97 20
98 24
99 17
100 17
101 21
102 25
103 18
104 26
105 20
106 15
107 10
108 13
109 15
110 12
111 8
112 7
113 9
114 6
115 12
116 7
117 8
118 3
119 5
120 7
121 2
122 4
123 8
124 7
125 9
126+ 92
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Overview

Takuro Nunoura is affiliated with the Japan Agency for Marine-Earth Science and Technology in Japan. Their research spans multiple scientific fields with a focus on Environmental Science, Biochemistry, Genetics and Molecular Biology, and Earth and Planetary Sciences. Within these domains, they have contributed extensively to subfields such as Ecology, Molecular Biology, Environmental Chemistry, Plant Science, and Geophysics.

Nunoura's work covers a range of significant research topics. These include Methane Hydrates and Related Phenomena, Microbial Community Ecology and Physiology, Bacteriophages and Microbial Interactions, Genomics and Phylogenetic Studies, Seismic Imaging and Inversion Techniques, Geological and Geophysical Studies, and Plant Virus Research Studies.

The scientist has published research in various venues, frequently contributing to:

  • Zenodo (CERN European Organization for Nuclear Research)
  • bioRxiv (Cold Spring Harbor Laboratory)
  • Microbes and Environments
  • Nature Microbiology
  • The ISME Journal

Some recent publications include:

  • "Inference and reconstruction of the heimdallarchaeial ancestry of eukaryotes" (2023), Nature
  • "Roadmap for naming uncultivated Archaea and Bacteria" (2020), Nature Microbiology
  • "Pangenomics Analysis Reveals Diversification of Enzyme Families and Niche Specialization in Globally Abundant SAR202 Bacteria" (2020), mBio
  • "Genomes of Thaumarchaeota from deep sea sediments reveal specific adaptations of three independently evolved lineages" (2021), The ISME Journal
  • "Three families of Asgard archaeal viruses identified in metagenome-assembled genomes" (2022), Nature Microbiology

Nunoura has collaborated frequently with several researchers, including:

  • Yoshihiro Takaki
  • Miho Hirai
  • Syun-ichi Urayama
  • Yoshinori Takano
  • P. B. Flemings

Best Publications

  • Asgard archaea illuminate the origin of eukaryotic cellular complexity

    Katarzyna Zaremba-Niedzwiedzka;Eva Fernández Cáceres;Jimmy Hser Wah Saw;Disa Bäckström

  • 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

  • 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

  • Major role of nitrite-oxidizing bacteria in dark ocean carbon fixation

    Maria G. Pachiadaki;Eva Sintes;Kristin Bergauer;Julia M. Brown

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

    Takuro Nunoura;Yoshihiro Takaki;Miho Hirai;Shigeru Shimamura

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

    Satoshi Nakagawa;Ken Takai;Fumio Inagaki;Hisako Hirayama

  • Inference and reconstruction of the heimdallarchaeial ancestry of eukaryotes

    Unknown

  • Enzymatic and Genetic Characterization of Carbon and Energy Metabolisms by Deep-Sea Hydrothermal Chemolithoautotrophic Isolates of Epsilonproteobacteria

    Ken Takai;Barbara J. Campbell;S. Craig Cary;Masae Suzuki

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

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

  • Isolation and phylogenetic diversity of members of previously uncultivated ε-Proteobacteria in deep-sea hydrothermal fields

    Ken Takai;Fumio Inagaki;Satoshi Nakagawa;Hisako Hirayama

  • Microbial community in a sediment-hosted CO2 lake of the southern Okinawa Trough hydrothermal system

    Fumio Inagaki;Marcel M. M. Kuypers;Urumu Tsunogai;Jun-ichiro Ishibashi

  • Variability in microbial community and venting chemistry in a sediment-hosted backarc hydrothermal system: Impacts of subseafloor phase-separation.

    Satoshi Nakagawa;Ken Takai;Fumio Inagaki;Hitoshi Chiba

  • Fungal diversity in deep-sea sediments – the presence of novel fungal groups

    Yuriko Nagano;Takahiko Nagahama;Yuji Hatada;Takuro Nunoura

  • Hydrothermal fluid geochemistry at the Iheya North field in the mid-Okinawa trough: Implication for origin of methane in subseafloor fluid circulation systems

    Shinsuke Kawagucci;Shinsuke Kawagucci;Hitoshi Chiba;Jun Ichiro Ishibashi;Toshiro Yamanaka

  • Roadmap for naming uncultivated Archaea and Bacteria

    Alison E. Murray;John Freudenstein;Simonetta Gribaldo;Roland Hatzenpichler

  • Variability in the microbial communities and hydrothermal fluid chemistry at the newly discovered Mariner hydrothermal field, southern Lau Basin

    Ken Takai;Takuro Nunoura;Jun Ichiro Ishibashi;John Lupton

  • Characterization of C1-metabolizing prokaryotic communities in methane seep habitats at the Kuroshima Knoll, southern Ryukyu Arc, by analyzing pmoA, mmoX, mxaF, mcrA, and 16S rRNA genes.

    Fumio Inagaki;Urumu Tsunogai;Masae Suzuki;Ayako Kosaka

  • Microbial community and geochemical analyses of trans-trench sediments for understanding the roles of hadal environments.

    Satoshi Hiraoka;Miho Hirai;Yohei Matsui;Yohei Matsui;Akiko Makabe

  • Metagenomic analysis of viral communities in (hado)pelagic sediments.

    Mitsuhiro Yoshida;Yoshihiro Takaki;Masamitsu Eitoku;Takuro Nunoura

  • Liquid CO2 venting on the seafloor: Yonaguni Knoll IV hydrothermal system, Okinawa Trough

    Uta Konno;Urumu Tsunogai;Fumiko Nakagawa;Miwako Nakaseama

  • Spatial Distribution of Marine Crenarchaeota Group I in the Vicinity of Deep-Sea Hydrothermal Systems

    Ken Takai;Hanako Oida;Yohey Suzuki;Hisako Hirayama

Frequent Co-Authors

Ken Takai
Ken Takai 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
Hiroyuki Imachi
Hiroyuki Imachi Japan Agency for Marine-Earth Science and Technology
Urumu Tsunogai
Urumu Tsunogai Nagoya University
Kenneth H. Nealson
Kenneth H. Nealson University of Southern California
Jun-ichiro Ishibashi
Jun-ichiro Ishibashi Kobe University
Yuichiro Ueno
Yuichiro Ueno Tokyo Institute of Technology
Gerhard J. Herndl
Gerhard J. Herndl University of Vienna
Cinzia Corinaldesi
Cinzia Corinaldesi Marche Polytechnic University

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