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Environmental Sciences
USA
2026

D-Index & Metrics

Environmental Sciences

D-Index
137
Citations
73972
World Ranking
53
National Ranking
21

David M. Karl 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 David M. Karl 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: 552 publications — 98th percentile

98% of scientists in this discipline score the same or lower.

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

David M. Karl 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 David M. Karl 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: 137 D-Index — 99th percentile

99% of scientists in this discipline score the same or lower.

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

Research.com Recognitions

  • 2026 - Research.com Environmental Sciences in United States Leader Award
  • 2025 - Research.com Environmental Sciences in United States Leader Award
  • 2023 - Research.com Environmental Sciences in United States Leader Award
  • 2015 - Dupont Industrial Biosciences Award in Applied and Environmental Microbiology, American Society for Microbiology
  • 2015 - Fellow of the American Academy of Arts and Sciences
  • 2015 - International Balzan Prize
  • 2006 - Member of the National Academy of Sciences
  • 1999 - Fellow of American Geophysical Union (AGU)

Overview

David M. Karl is affiliated with the University of Hawaii at Manoa in the United States. Their research spans multiple domains within Earth and Planetary Sciences and Environmental Science, with a particular focus on Oceanography and Ecology.

The scientist's primary fields of study include:

  • Earth and Planetary Sciences
  • Environmental Science

Within these fields, their research subfields cover:

  • Oceanography
  • Ecology
  • Molecular Biology
  • Global and Planetary Change
  • Environmental Chemistry

Main topics of their work are:

  • Marine and coastal ecosystems
  • Microbial Community Ecology and Physiology
  • Marine Biology and Ecology Research
  • Isotope Analysis in Ecology
  • Methane Hydrates and Related Phenomena
  • Protist diversity and phylogeny
  • Ocean Acidification Effects and Responses

David M. Karl has published extensively, with frequent venues including:

  • Zenodo (CERN European Organization for Nuclear Research)
  • Limnology and Oceanography
  • Global Biogeochemical Cycles
  • Proceedings of the National Academy of Sciences
  • Nature Communications

Recent publications include:

  • "Microbes and Climate Change: a Research Prospectus for the Future," 2022, mBio
  • "Microbial dynamics of elevated carbon flux in the open ocean's abyss," 2021, Proceedings of the National Academy of Sciences
  • "Anthropogenic Asian aerosols provide Fe to the North Pacific Ocean," 2020, Proceedings of the National Academy of Sciences
  • "Earth at risk: An urgent call to end the age of destruction and forge a just and sustainable future," 2024, PNAS Nexus
  • "Latitudinal constraints on the abundance and activity of the cyanobacterium UCYN-A and other marine diazotrophs in the North Pacific," 2020, Limnology and Oceanography

The scientist has collaborated frequently with colleagues such as Angelicque White, Benedetto Barone, Matthew J. Church, Steve Poulos, and Samuel T. Wilson.

Throughout their career, David M. Karl has received several awards and recognitions, including:

  • Member of the National Academy of Sciences (2006)
  • Fellow of the American Academy of Arts and Sciences (2015)
  • International Balzan Prize (2015)
  • Dupont Industrial Biosciences Award in Applied and Environmental Microbiology, American Society for Microbiology (2015)
  • Fellow of American Geophysical Union (AGU) (1999)

Best Publications

  • Nitrogen cycles: past, present, and future

    J. N. Galloway;F. J. Dentener;D. G. Capone;E. W. Boyer

  • VERTEX: carbon cycling in the northeast Pacific

    John H. Martin;George A. Knauer;David M. Karl;William W. Broenkow

  • The Sorcerer II Global Ocean Sampling Expedition: Northwest Atlantic through Eastern Tropical Pacific

    Douglas B. Rusch;Aaron L Halpern;Granger Sutton;Karla B. Heidelberg;Karla B. Heidelberg

  • Scientists' Warning to Humanity: Microorganisms and Climate Change

    Ricardo Cavicchioli;William J. Ripple;Kenneth N. Timmis;Farooq Azam

  • Archaeal dominance in the mesopelagic zone of the Pacific Ocean

    Markus B. Karner;Edward F. DeLong;David M. Karl

  • Community Genomics Among Stratified Microbial Assemblages in the Ocean's Interior

    Edward F. DeLong;Christina M. Preston;Tracy Mincer;Virginia Rich

  • Present and future global distributions of the marine Cyanobacteria Prochlorococcus and Synechococcus

    Pedro Flombaum;José L. Gallegos;Rodolfo A. Gordillo;José Rincon

  • The role of nitrogen fixation in biogeochemical cycling in the subtropical North Pacific Ocean

    D. Karl;R. Letelier;L. Tupas;J. Dore

  • Phosphate depletion in the western North Atlantic Ocean.

    Jingfeng Wu;William Sunda;Edward A. Boyle;David M. Karl

  • Phytoplankton in the ocean use non-phosphorus lipids in response to phosphorus scarcity.

    Benjamin A. S. Van Mooy;Helen F. Fredricks;Byron E. Pedler;Byron E. Pedler;Sonya T. Dyhrman

  • Dinitrogen fixation in the world's oceans

    D. Karl;A. Michaels;B. Bergman;D.G. Capone

  • Unicellular cyanobacteria fix N2 in the subtropical North Pacific Ocean.

    Jonathan P. Zehr;John B. Waterbury;Patricia J. Turner;Joseph P. Montoya

  • Cellular nucleotide measurements and applications in microbial ecology.

    D M Karl

  • Revisiting Carbon Flux Through the Ocean's Twilight Zone

    Ken O. Buesseler;Carl H. Lamborg;Philip W. Boyd;Phoebe J. Lam

  • The Hawaii Ocean Time-series (HOT) program: Background, rationale and field implementation

    David M. Karl;Roger Lukas

  • Physical and biogeochemical modulation of ocean acidification in the central North Pacific.

    John E. Dore;Roger Lukas;Daniel W. Sadler;Matthew J. Church

  • Quantitative distribution of presumptive archaeal and bacterial nitrifiers in Monterey Bay and the North Pacific Subtropical Gyre.

    Tracy J. Mincer;Matthew J. Church;Lance Trent Taylor;Christina Preston

  • Production of methane and ethylene from plastic in the environment

    Sarah-Jeanne Royer;Sara Ferrón;Samuel T. Wilson;David M. Karl

  • Aerobic production of methane in the sea

    David M. Karl;Lucas Beversdorf;Karin M. Björkman;Matthew J. Church

  • MAGIC : a sensitive and precise method for measuring dissolved phosphorus in aquatic environments

    David M. Karl;Georgia Tien

  • A Sea of Change: Biogeochemical Variability in the North Pacific Subtropical Gyre

    David M. Karl

Frequent Co-Authors

Matthew J. Church
Matthew J. Church University of Montana
Ricardo M. Letelier
Ricardo M. Letelier Oregon State University
Edward F. DeLong
Edward F. DeLong University of Hawaii at Manoa
Roger Lukas
Roger Lukas University of Hawaii at Manoa
Jonathan P. Zehr
Jonathan P. Zehr University of California, Santa Cruz
Angelicque E. White
Angelicque E. White University of Hawaii at Manoa
Robert R. Bidigare
Robert R. Bidigare University of Hawaii at Manoa
John E. Dore
John E. Dore Montana State University
Scott C. Doney
Scott C. Doney University of Virginia
Daniel J. Repeta
Daniel J. Repeta Woods Hole Oceanographic Institution

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