World's Best Scientists 2026 revealed!
Toshi Nagata

Toshi Nagata

D-Index & Metrics

Environmental Sciences

D-Index
43
Citations
7827
World Ranking
7054
National Ranking
135

Toshi Nagata 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 Toshi Nagata sits on this spectrum.

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: 283 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: 25 scientists 501–510 publications: 17 scientists 511–520 publications: 18 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 681–686 publications: 3 scientists 687+ publications: 100 scientists
41 publications 687+

This scientist: 166 publications — 50th percentile

50% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 687 publications or more.

Toshi Nagata 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 Toshi Nagata sits on this spectrum.

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: 199 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: 19 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: 99 scientists
30 D-Index 125+

This scientist: 43 D-Index — 29th percentile

29% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 125 D-Index or more.

Overview

Toshi Nagata is a researcher affiliated with the University of Tokyo in Japan. Their work primarily spans the fields of Environmental Science and Earth and Planetary Sciences, with a focus on subfields such as Ecology, Oceanography, Global and Planetary Change, Environmental Chemistry, and Pollution.

Their research addresses multiple topics within these domains, including:

  • Marine and coastal ecosystems
  • Isotope Analysis in Ecology
  • Microbial Community Ecology and Physiology
  • Methane Hydrates and Related Phenomena
  • Marine Bivalve and Aquaculture Studies
  • Marine and fisheries research
  • Microplastics and Plastic Pollution

Notable recent publications by Nagata include:

  • "Transparent Exopolymer Particles in Deep Oceans: Synthesis and Future Challenges," 2021, published in Gels
  • "Tracking long-distance migration of marine fishes using compound-specific stable isotope analysis of amino acids," 2020, published in Ecology Letters
  • "Efficient radiocarbon measurements on marine and terrestrial samples with single stage Accelerator Mass Spectrometry at the Atmosphere and Ocean Research Institute, University of Tokyo," 2022, published in Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms
  • "Influences of Ocean Currents on the Diets of Demersal Fish Communities in the Western North Pacific Revealed by Their Muscle Carbon and Nitrogen Isotopic Compositions," 2021, published in Frontiers in Marine Science
  • "Seasonal Cycle of the Confluence of the Tsugaru Warm, Oyashio, and Kuroshio Currents East of Japan," 2022, published in Journal of Geophysical Research Oceans

Frequent publication venues for Nagata's research are:

  • Frontiers in Marine Science
  • Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms
  • Frontiers in Microbiology
  • Limnology and Oceanography
  • Ecology Letters

Collaborations have been made with several co-authors including:

  • Hideki Fukuda
  • Yosuke Yamada
  • Nanako O. Ogawa
  • Naohiko Ohkouchi
  • Yūsuke Yokoyama

Toshi Nagata's work frequently involves interdisciplinary approaches to environmental and marine sciences, applying isotope analysis and microbiological techniques to study ecological and oceanographic processes. Their research contributes to understanding the complexity of marine ecosystems, the cycling of elements within these systems, and the influence of physical oceanographic phenomena on marine life.

Best Publications

  • Direct Determination of Carbon and Nitrogen Contents of Natural Bacterial Assemblages in Marine Environments

    Rumi Fukuda;Hiroshi Ogawa;Toshi Nagata;Isao Koike

  • Production mechanisms of dissolved organic matter

    T. Nagata

  • 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

  • Assessing the apparent imbalance between geochemical and biochemical indicators of meso- and bathypelagic biological activity: What the @#! is wrong with present calculations of carbon budgets?

    Adrian B. Burd;Dennis A. Hansell;Deborah K. Steinberg;Thomas R. Anderson

  • Bacterioplankton distribution and production in deep Pacific waters: Large-scale geographic variations and possible coupling with sinking particle fluxes

    Toshi Nagata;Hideki Fukuda;Rumi Fukuda;Isao Koike

  • Carbon and nitrogen content of natural planktonic bacteria.

    Toshi Nagata

  • Sources of nitrate and ammonium contamination in groundwater under developing Asian megacities

    Yu Umezawa;Takahiro Hosono;Shin ichi Onodera;Fernando Siringan

  • Release of macromolecular organic complexes by heterotrophic marine flagellates

    T. Nagata;DL Kirchman

  • Emerging concepts on microbial processes in the bathypelagic ocean-ecology, biogeochemistry, and genomics

    Toshi Nagata;Christian Tamburini;Javier Arístegui;Federico Baltar

  • The microflagellate-picoplankton food linkage in the water column of Lake Biwa

    Toshi Nagata

  • Organic Matter–Bacteria Interactions in Seawater

    Toshi Nagata

  • Heat accumulation on coral reefs mitigated by internal waves

    Alex S. J. Wyatt;Alex S. J. Wyatt;James J. Leichter;Lauren T. Toth;Toshihiro Miyajima

  • Autotrophic picoplankton in southern Lake Baikal: abundance, growth and grazing mortality during summer

    Toshi Nagata;Kenji Takai;Kyoko Kawanobe;Dong-Sup Kim

  • Microbial degradation of peptidoglycan in seawater

    T. Nagata;B. Meon;D. L. Kirchman

  • Multiple isotope (H, O, N, S and Sr) approach elucidates complex pollution causes in the shallow groundwaters of the Taipei urban area

    Takahiro Hosono;Chung Ho Wang;Yu Umezawa;Takanori Nakano

  • Release of dissolved free and combined amino acids by bacterivorous marine flagellates

    Toshi Nagata;David L. Kirchman

  • Diazotroph community structure and the role of nitrogen fixation in the nitrogen cycle in the Chukchi Sea (western Arctic Ocean)

    Takuhei Shiozaki;Amane Fujiwara;Minoru Ijichi;Naomi Harada

  • Viral control of bacterial growth efficiency in marine pelagic environments

    Chiaki Motegi;Toshi Nagata;Toshi Nagata;Takeshi Miki;Markus G. Weinbauer;Markus G. Weinbauer

  • Degradation by bacteria of membrane and soluble protein in seawater

    Toshi Nagata;Rumi Fukuda;Isao Koike;Kazuhiro Kogure

  • Evidence of Global Chlorophyll d

    Y. Kashiyama;H. Miyashita;S. Ohkubo;N. O. Ogawa

Frequent Co-Authors

Ichiro Tayasu
Ichiro Tayasu Research Institute for Humanity and Nature
Yusuke Yokoyama
Yusuke Yokoyama University of Tokyo
Naohiko Ohkouchi
Naohiko Ohkouchi Japan Agency for Marine-Earth Science and Technology
Yoshito Chikaraishi
Yoshito Chikaraishi Japan Agency for Marine-Earth Science and Technology
David L. Kirchman
David L. Kirchman University of Delaware
Nobuhito Ohte
Nobuhito Ohte Kyoto University
Shigeto Nishino
Shigeto Nishino Japan Agency for Marine-Earth Science and Technology
Isao Koike
Isao Koike University of Tokyo
Ken Furuya
Ken Furuya Soka University
Makoto Taniguchi
Makoto Taniguchi Research Institute for Humanity and Nature

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