World's Best Scientists 2026 revealed!

D-Index & Metrics

Earth Science

D-Index
47
Citations
8759
World Ranking
3992
National Ranking
1561

Kirk R. Johnson publications per year

1983: 1 publications 1984: 1 publications 1985: 0 publications 1986: 1 publications 1987: 3 publications 1988: 2 publications 1989: 2 publications 1990: 2 publications 1991: 0 publications 1992: 1 publications 1993: 2 publications 1994: 0 publications 1995: 0 publications 1996: 1 publications 1997: 1 publications 1998: 2 publications 1999: 3 publications 2000: 2 publications 2001: 6 publications 2002: 17 publications 2003: 8 publications 2004: 4 publications 2005: 4 publications 2006: 1 publications 2007: 10 publications 2008: 16 publications 2009: 3 publications 2010: 7 publications 2011: 5 publications 2012: 1 publications 2013: 3 publications 2014: 10 publications 2015: 4 publications 2016: 9 publications 2017: 2 publications 2018: 1 publications 2019: 9 publications 2020: 2 publications 2021: 1 publications 2022: 3 publications 2023: 2 publications 2024: 0 publications 2025: 2 publications
1983 2025

154 publications in total across all disciplines

Kirk R. Johnson publication distribution in Earth Science in 2027

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Earth Science in 2027. The highlighted bar marks where Kirk R. Johnson sits on this spectrum.

38–47 publications: 5 scientists 48–57 publications: 33 scientists 58–67 publications: 94 scientists 68–77 publications: 161 scientists 78–87 publications: 278 scientists 88–97 publications: 376 scientists 98–107 publications: 404 scientists 108–117 publications: 484 scientists 118–127 publications: 540 scientists 128–137 publications: 557 scientists 138–147 publications: 491 scientists 148–157 publications: 495 scientists 158–167 publications: 458 scientists 168–177 publications: 490 scientists 178–187 publications: 414 scientists 188–197 publications: 401 scientists 198–207 publications: 333 scientists 208–217 publications: 292 scientists 218–227 publications: 290 scientists 228–237 publications: 262 scientists 238–247 publications: 243 scientists 248–257 publications: 208 scientists 258–267 publications: 185 scientists 268–277 publications: 147 scientists 278–287 publications: 128 scientists 288–297 publications: 119 scientists 298–307 publications: 120 scientists 308–317 publications: 107 scientists 318–327 publications: 93 scientists 328–337 publications: 87 scientists 338–347 publications: 64 scientists 348–357 publications: 87 scientists 358–367 publications: 60 scientists 368–377 publications: 60 scientists 378–387 publications: 34 scientists 388–397 publications: 50 scientists 398–407 publications: 44 scientists 408–417 publications: 31 scientists 418–427 publications: 39 scientists 428–437 publications: 27 scientists 438–447 publications: 36 scientists 448–457 publications: 27 scientists 458–467 publications: 29 scientists 468–477 publications: 30 scientists 478–487 publications: 19 scientists 488–497 publications: 15 scientists 498–507 publications: 18 scientists 508–517 publications: 19 scientists 518–527 publications: 16 scientists 528–537 publications: 10 scientists 538–547 publications: 11 scientists 548–557 publications: 14 scientists 558–567 publications: 11 scientists 568–577 publications: 7 scientists 578–587 publications: 14 scientists 588–597 publications: 5 scientists 598–602 publications: 4 scientists 603+ publications: 100 scientists
38 publications 603+

This scientist: 131 publications — 28th percentile

28% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 603 publications or more.

Kirk R. Johnson D-index placement in Earth Science in 2027

The chart shows the D-index (discipline H-index) distribution of Earth Science scientists ranked by Research.com in 2027. The highlighted bar marks where Kirk R. Johnson sits on this spectrum.

30 D-Index: 144 scientists 31 D-Index: 215 scientists 32 D-Index: 278 scientists 33 D-Index: 379 scientists 34 D-Index: 366 scientists 35 D-Index: 372 scientists 36 D-Index: 389 scientists 37 D-Index: 366 scientists 38 D-Index: 344 scientists 39 D-Index: 349 scientists 40 D-Index: 296 scientists 41 D-Index: 289 scientists 42 D-Index: 277 scientists 43 D-Index: 279 scientists 44 D-Index: 248 scientists 45 D-Index: 257 scientists 46 D-Index: 212 scientists 47 D-Index: 202 scientists 48 D-Index: 207 scientists 49 D-Index: 204 scientists 50 D-Index: 183 scientists 51 D-Index: 178 scientists 52 D-Index: 182 scientists 53 D-Index: 178 scientists 54 D-Index: 163 scientists 55 D-Index: 117 scientists 56 D-Index: 163 scientists 57 D-Index: 120 scientists 58 D-Index: 113 scientists 59 D-Index: 136 scientists 60 D-Index: 135 scientists 61 D-Index: 96 scientists 62 D-Index: 103 scientists 63 D-Index: 83 scientists 64 D-Index: 103 scientists 65 D-Index: 83 scientists 66 D-Index: 89 scientists 67 D-Index: 92 scientists 68 D-Index: 89 scientists 69 D-Index: 78 scientists 70 D-Index: 75 scientists 71 D-Index: 53 scientists 72 D-Index: 62 scientists 73 D-Index: 54 scientists 74 D-Index: 35 scientists 75 D-Index: 52 scientists 76 D-Index: 50 scientists 77 D-Index: 32 scientists 78 D-Index: 37 scientists 79 D-Index: 20 scientists 80 D-Index: 33 scientists 81 D-Index: 36 scientists 82 D-Index: 34 scientists 83 D-Index: 34 scientists 84 D-Index: 24 scientists 85 D-Index: 19 scientists 86 D-Index: 18 scientists 87 D-Index: 26 scientists 88 D-Index: 30 scientists 89 D-Index: 17 scientists 90 D-Index: 21 scientists 91 D-Index: 19 scientists 92 D-Index: 15 scientists 93 D-Index: 14 scientists 94 D-Index: 20 scientists 95 D-Index: 9 scientists 96 D-Index: 10 scientists 97 D-Index: 15 scientists 98 D-Index: 13 scientists 99 D-Index: 3 scientists 100 D-Index: 13 scientists 101 D-Index: 3 scientists 102 D-Index: 9 scientists 103 D-Index: 4 scientists 104 D-Index: 6 scientists 105 D-Index: 6 scientists 106+ D-Index: 98 scientists
30 D-Index 106+

This scientist: 47 D-Index — 57th percentile

57% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 106 D-Index or more.

Research.com Recognitions

  • 2011 - Fellow of John Simon Guggenheim Memorial Foundation

Overview

Kirk R. Johnson is affiliated with the National Museum of Natural History in the United States. Their research spans multiple fields, primarily Agricultural and Biological Sciences with contributions to Earth and Planetary Sciences.

The main areas of study include:

  • Agricultural and Biological Sciences
  • Earth and Planetary Sciences

Within these broader fields, the subfields of study involve:

  • Ecology, Evolution, Behavior and Systematics
  • Paleontology
  • Geophysics
  • Molecular Biology
  • Plant Science

Their research topics mainly focus on:

  • Plant Diversity and Evolution
  • Plant and animal studies
  • Fern and Epiphyte Biology
  • Plant and Fungal Species Descriptions
  • Evolution and Paleontology Studies
  • Botany and Geology in Latin America and Caribbean
  • Geological and Tectonic Studies in Latin America

Kirk R. Johnson has authored several papers published in reputable scientific journals. Recent papers include:

  • "An image dataset of cleared, x-rayed, and fossil leaves vetted to plant family for human and machine learning" (2021) in PhytoKeys
  • "Nitrogen isotopes reveal independent origins of N2-fixing symbiosis in extant cycad lineages" (2023) in Nature Ecology & Evolution
  • "Insect herbivory on Catula gettyi gen. et sp. nov. (Lauraceae) from the Kaiparowits Formation (Late Cretaceous, Utah, USA)" (2022) in PLoS ONE
  • "No Consistent Shift in Leaf Dry Mass per Area Across the Cretaceous-Paleogene Boundary" (2022) in Frontiers in Plant Science
  • "Correction: Insect herbivory on Catula gettyi gen. et sp. nov. (Lauraceae) from the Kaiparowits Formation (Late Cretaceous, Utah, USA)" (2022) in PLoS ONE

Their frequent coauthors have included:

  • Ian M. Miller
  • Peter Wilf
  • Scott L. Wing
  • Herbert W. Meyer
  • Rohit Saha

Frequent publication venues for their work are:

  • PLoS ONE
  • PhytoKeys
  • Nature Ecology & Evolution
  • Frontiers in Plant Science
  • Journal of Paleontology

Kirk R. Johnson was awarded a fellowship by the John Simon Guggenheim Memorial Foundation in 2011.

Best Publications

  • The Chicxulub Asteroid Impact and Mass Extinction at the Cretaceous-Paleogene Boundary

    Peter Schulte;Laia Alegret;Ignacio Arenillas;José A. Arz

  • Sensitivity of leaf size and shape to climate: Global patterns and paleoclimatic applications

    Daniel J. Peppe;Daniel J. Peppe;Dana L. Royer;Bárbara Cariglino;Sofia Y. Oliver

  • Impact of the terminal Cretaceous event on plant–insect associations

    Conrad C. Labandeira;Conrad C. Labandeira;Kirk R. Johnson;Peter Wilf

  • High Plant Diversity in Eocene South America: Evidence from Patagonia

    Peter Wilf;Peter Wilf;Peter Wilf;N. Rubén Cúneo;Kirk R. Johnson;Jason F. Hicks

  • Correlated terrestrial and marine evidence for global climate changes before mass extinction at the Cretaceous-Paleogene boundary.

    Peter Wilf;Kirk R. Johnson;Brian T. Huber

  • Eocene Plant Diversity at Laguna del Hunco and Río Pichileufú, Patagonia, Argentina

    Peter Wilf;Kirk R. Johnson;N. Rubén Cúneo;M. Elliot Smith

  • Exceptional continental record of biotic recovery after the Cretaceous–Paleogene mass extinction

    T. R. Lyson;I. M. Miller;A. D. Bercovici;A. D. Bercovici;K. Weissenburger

  • Timing the radiations of leaf beetles: hispines on gingers from latest cretaceous to recent.

    Peter Wilf;Conrad C. Labandeira;W. John Kress;Charles L. Staines

  • Decoupled Plant and Insect Diversity After the End-Cretaceous Extinction

    Peter Wilf;Conrad C. Labandeira;Conrad C. Labandeira;Kirk R. Johnson;Beth Ellis

  • Land plant extinction at the end of the Cretaceous: a quantitative analysis of the North Dakota megafloral record

    Peter Daniel Wilf;Kirk R. Johnson

  • The Hell Creek Formation and the Cretaceous-Tertiary boundary in the Northern Great Plains: an integrated continental record of the end of the Cretaceous

    Joseph Herbert Hartman;Kirk R. Johnson;Douglas J. Nichols

  • Fossil leaf economics quantified: calibration, Eocene case study, and implications

    Dana L. Royer;Lawren Sack;Peter Wilf;Christopher H. Lusk

  • A Tropical Rainforest in Colorado 1.4 Million Years After the Cretaceous-Tertiary Boundary

    Kirk R. Johnson;Beth Ellis

  • Habitat-related error in estimating temperatures from leaf margins in a humid tropical forest.

    Robyn J. Burnham;Nigel C. A. Pitman;Kirk R. Johnson;Peter Wilf

  • A Paleocene lowland macroflora from Patagonia reveals significantly greater richness than North American analogs

    Ari Iglesias;Peter Wilf;Kirk R. Johnson;Alba B. Zamuner

  • Oldest known Eucalyptus macrofossils are from South America.

    María A. Gandolfo;Elizabeth J. Hermsen;María C. Zamaloa;Kevin C. Nixon

  • Megaflora of the Hell Creek and lower Fort Union Formations in the western Dakotas: Vegetational response to climate change, the Cretaceous-Tertiary boundary event, and rapid marine transgression

    Kirk R. Johnson

  • Plants and the K-T Boundary

    Douglas J. Nichols;Kirk R. Johnson

  • Papuacedrus (Cupressaceae) in Eocene Patagonia: A new fossil link to Australasian rainforests.

    Peter Wilf;Stefan A. Little;Ari Iglesias;Ari Iglesias;María del Carmen Zamaloa

  • High-resolution leaf-fossil record spanning the Cretaceous/Tertiary boundary

    Kirk R. Johnson;Douglas J. Nichols;Moses Attrep;Charles J. Orth

Frequent Co-Authors

Peter Wilf
Peter Wilf Pennsylvania State University
Conrad C. Labandeira
Conrad C. Labandeira Smithsonian Institution
William C. Clyde
William C. Clyde University of New Hampshire
Maria A. Gandolfo
Maria A. Gandolfo Cornell University
Dana L. Royer
Dana L. Royer Wesleyan University
Scott L. Wing
Scott L. Wing National Museum of Natural History
Gar W. Rothwell
Gar W. Rothwell Ohio University
Ruth A. Stockey
Ruth A. Stockey Oregon State University

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