World's Best Scientists 2026 revealed!

D-Index & Metrics

Earth Science

D-Index
42
Citations
6978
World Ranking
5228
National Ranking
1958

Karl W. Flessa publication distribution in Earth Science in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Earth Science in 2026. The highlighted bar marks where Karl W. Flessa sits on this spectrum.

38–42 publications: 1 scientists 43–47 publications: 0 scientists 48–52 publications: 3 scientists 53–57 publications: 8 scientists 58–62 publications: 11 scientists 63–67 publications: 16 scientists 68–72 publications: 24 scientists 73–77 publications: 31 scientists 78–82 publications: 49 scientists 83–87 publications: 77 scientists 88–92 publications: 86 scientists 93–97 publications: 88 scientists 98–102 publications: 92 scientists 103–107 publications: 84 scientists 108–112 publications: 102 scientists 113–117 publications: 108 scientists 118–122 publications: 117 scientists 123–127 publications: 126 scientists 128–132 publications: 146 scientists 133–137 publications: 114 scientists 138–142 publications: 102 scientists 143–147 publications: 127 scientists 148–152 publications: 102 scientists 153–157 publications: 112 scientists 158–162 publications: 102 scientists 163–167 publications: 127 scientists 168–172 publications: 121 scientists 173–177 publications: 112 scientists 178–182 publications: 109 scientists 183–187 publications: 98 scientists 188–192 publications: 92 scientists 193–197 publications: 105 scientists 198–202 publications: 77 scientists 203–207 publications: 80 scientists 208–212 publications: 89 scientists 213–217 publications: 70 scientists 218–222 publications: 74 scientists 223–227 publications: 74 scientists 228–232 publications: 70 scientists 233–237 publications: 67 scientists 238–242 publications: 59 scientists 243–247 publications: 67 scientists 248–252 publications: 51 scientists 253–257 publications: 46 scientists 258–262 publications: 41 scientists 263–267 publications: 39 scientists 268–272 publications: 34 scientists 273–277 publications: 39 scientists 278–282 publications: 35 scientists 283–287 publications: 36 scientists 288–292 publications: 35 scientists 293–297 publications: 29 scientists 298–302 publications: 23 scientists 303–307 publications: 39 scientists 308–312 publications: 34 scientists 313–317 publications: 23 scientists 318–322 publications: 18 scientists 323–327 publications: 18 scientists 328–332 publications: 21 scientists 333–337 publications: 20 scientists 338–342 publications: 15 scientists 343–347 publications: 13 scientists 348–352 publications: 24 scientists 353–357 publications: 25 scientists 358–362 publications: 10 scientists 363–367 publications: 20 scientists 368–372 publications: 17 scientists 373–377 publications: 18 scientists 378–382 publications: 15 scientists 383–387 publications: 7 scientists 388–392 publications: 22 scientists 393–397 publications: 9 scientists 398–402 publications: 11 scientists 403–407 publications: 16 scientists 408–412 publications: 4 scientists 413–417 publications: 5 scientists 418–422 publications: 14 scientists 423–427 publications: 8 scientists 428–432 publications: 7 scientists 433–437 publications: 7 scientists 438–442 publications: 10 scientists 443–447 publications: 10 scientists 448–452 publications: 3 scientists 453–457 publications: 9 scientists 458–462 publications: 11 scientists 463–467 publications: 4 scientists 468–472 publications: 6 scientists 473–477 publications: 11 scientists 478–482 publications: 8 scientists 483–487 publications: 2 scientists 488–492 publications: 3 scientists 493–497 publications: 4 scientists 498–502 publications: 4 scientists 503–507 publications: 4 scientists 508–509 publications: 4 scientists 510+ publications: 100 scientists
38 publications 510+

This scientist: 133 publications — 27th percentile

27% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 510 publications or more.

Karl W. Flessa D-index placement in Earth Science in 2026

The chart shows the D-index (discipline H-index) distribution of Earth Science scientists ranked by Research.com in 2026. The highlighted bar marks where Karl W. Flessa sits on this spectrum.

30 D-Index: 15 scientists 31 D-Index: 42 scientists 32 D-Index: 60 scientists 33 D-Index: 90 scientists 34 D-Index: 103 scientists 35 D-Index: 108 scientists 36 D-Index: 142 scientists 37 D-Index: 147 scientists 38 D-Index: 147 scientists 39 D-Index: 152 scientists 40 D-Index: 143 scientists 41 D-Index: 157 scientists 42 D-Index: 141 scientists 43 D-Index: 151 scientists 44 D-Index: 140 scientists 45 D-Index: 135 scientists 46 D-Index: 121 scientists 47 D-Index: 108 scientists 48 D-Index: 128 scientists 49 D-Index: 111 scientists 50 D-Index: 106 scientists 51 D-Index: 112 scientists 52 D-Index: 102 scientists 53 D-Index: 103 scientists 54 D-Index: 94 scientists 55 D-Index: 61 scientists 56 D-Index: 101 scientists 57 D-Index: 71 scientists 58 D-Index: 65 scientists 59 D-Index: 78 scientists 60 D-Index: 93 scientists 61 D-Index: 56 scientists 62 D-Index: 58 scientists 63 D-Index: 52 scientists 64 D-Index: 63 scientists 65 D-Index: 49 scientists 66 D-Index: 53 scientists 67 D-Index: 57 scientists 68 D-Index: 50 scientists 69 D-Index: 44 scientists 70 D-Index: 44 scientists 71 D-Index: 31 scientists 72 D-Index: 33 scientists 73 D-Index: 33 scientists 74 D-Index: 23 scientists 75 D-Index: 32 scientists 76 D-Index: 24 scientists 77 D-Index: 17 scientists 78 D-Index: 19 scientists 79 D-Index: 9 scientists 80 D-Index: 21 scientists 81 D-Index: 20 scientists 82 D-Index: 17 scientists 83 D-Index: 19 scientists 84 D-Index: 19 scientists 85 D-Index: 14 scientists 86 D-Index: 6 scientists 87 D-Index: 14 scientists 88 D-Index: 17 scientists 89 D-Index: 10 scientists 90 D-Index: 8 scientists 91 D-Index: 8 scientists 92 D-Index: 9 scientists 93 D-Index: 6 scientists 94+ D-Index: 98 scientists
30 D-Index 94+

This scientist: 42 D-Index — 33rd percentile

33% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 94 D-Index or more.

Research.com Recognitions

  • 2018 - Fellow of the American Association for the Advancement of Science (AAAS)
  • Fellow of the Geological Society of America
  • Fellow of the Geological Society of America
  • Fellow of the Geological Society of America

Overview

Karl W. Flessa is affiliated with the University of Arizona in the United States and conducts research primarily in the field of Environmental Science. Their work spans several subfields, including Ecology, Environmental Engineering, Geochemistry and Petrology, Water Science and Technology, and aspects of Management, Monitoring, Policy and Law.

Their research topics cover a range of environmental and hydrological studies, focusing on:

  • Groundwater and Isotope Geochemistry
  • Isotope Analysis in Ecology
  • Remote Sensing and LiDAR Applications
  • Remote Sensing in Agriculture
  • Groundwater flow and contamination studies
  • Water Quality and Resources Studies
  • Hydrology and Sediment Transport Processes

Notable recent papers authored or co-authored by Flessa include:

  • Hydrodiplomacy and adaptive governance at the U.S.-Mexico border: 75 years of tradition and innovation in transboundary water management, 2020, published in Environmental Science & Policy
  • Improving the efficiency and accuracy of evaluating aridland riparian habitat restoration using unmanned aerial vehicles, 2021, published in Remote Sensing in Ecology and Conservation
  • Groundwater Isotopes in the Sonoyta River Watershed, USA-Mexico: Implications for Recharge Sources and Management of the Quitobaquito Springs, 2020, published in Water
  • Groundwater Origin and Dynamics on the Eastern Flank of the Colorado River Delta, Mexico, 2021, published in Hydrology
  • Channel incision by headcut migration: Reconnection of the Colorado River to its estuary and the Gulf of California during the floods of 1979-1988, 2020, published in Hydrological Processes

Frequent co-authors of Flessa include:

  • Richard K. Bambach
  • A. J. Boucot
  • Rodney Feldman
  • Carrie E. Schweitzer
  • Elvira Gastaldo Th E Family

Flessa's research has been regularly published in established venues such as the Journal of Paleontology, with ten publications, as well as other journals and repositories including Zenodo (CERN European Organization for Nuclear Research), Environmental Science & Policy, Remote Sensing in Ecology and Conservation, and Water.

Recognition for Flessa's contributions includes fellowships from professional organizations:

  • Fellow of the American Association for the Advancement of Science (AAAS), awarded in 2018
  • Fellow of the Geological Society of America

Best Publications

  • The Quality of the Fossil Record: Populations, Species, and Communities

    Susan M. Kidwell;Karl W. Flessa

  • Conservation paleobiology: putting the dead to work

    Gregory P. Dietl;Karl W. Flessa

  • Time and taphonomy; quantitative estimates of time-averaging and stratigraphic disorder in a shallow marine habitat

    Karl W. Flessa;Alan H. Cutler;Keith H. Meldahl

  • Cross-Calibration of Daily Growth Increments, Stable Isotope Variation, and Temperature in the Gulf of California Bivalve Mollusk Chione cortezi: Implications for Paleoenvironmental Analysis

    David H. Goodwin;Karl W. Flessa;Bernd R. Schöne;David L. Dettman

  • High-resolution estimates of temporal mixing within shell beds: the evils and virtues of time-averaging

    Michal Kowalewski;Glenn A. Goodfriend;Karl W. Flessa

  • Conservation Paleobiology: Leveraging Knowledge of the Past to Inform Conservation and Restoration

    Gregory P. Dietl;Gregory P. Dietl;Susan M. Kidwell;Mark Brenner;David A. Burney

  • Shell survival and time‐averaging in nearshore and shelf environments: estimates from the radiocarbon literature

    Karl W. Flessa;Michal Kowalewski

  • Dead delta's former productivity: Two trillion shells at the mouth of the Colorado River

    Michal Kowalewski;Guillermo E. Avila Serrano;Karl W. Flessa;Glenn A. Goodfriend

  • Time-averaging and postmortem skeletal survival in benthic fossil assemblages: quantitative comparisons among Holocene environments

    Keith H. Meldahl;Karl W. Flessa;Alan H. Cutler

  • Ecosystem services across borders: a framework for transboundary conservation policy

    Laura López-Hoffman;Laura López-Hoffman;Robert G Varady;Karl W Flessa;Patricia Balvanera

  • Ecology and conservation biology of the Colorado River Delta, Mexico

    Edward P. Glenn;Francisco Zamora-Arroyo;Pamela L. Nagler;Mark Briggs

  • The use of oxygen isotope variation in shells of estuarine mollusks as a quantitative record of seasonal and annual Colorado River discharge

    David L. Dettman;Karl W. Flessa;Peter D. Roopnarine;Bernd R. Schöne

  • Extinction is here to stay

    Karl W. Flessa;David Jablonski

  • Taphofacies analysis of recent shelly cheniers (beach ridges), northeastern baja california, Mexico

    Michal Kowalewski;Karl W. Flessa;Jill A. Aggen

  • Taphonomic pathways and comparative biofacies and taphofacies in a Recent intertidal/shallow shelf environment

    Keith H. Meldahl;Karl W. Flessa

  • Taphonomy of tidal flat molluscs in the northern Gulf of California; paleoenvironmental analysis despite the perils of preservation

    Franz T. Fursich;Karl W. Flessa

  • The importance of Colorado River flow to nursery habitats of the Gulf corvina (Cynoscion othonopterus)

    Kirsten Rowell;Kirsten Rowell;Karl W Flessa;David L Dettman;Martha Román

  • Effects of Upstream Diversion of Colorado River Water on the Estuarine Bivalve Mollusc Mulinia coloradoensis

    Carlie A. Rodriguez;Karl W. Flessa;David L. Dettman

  • Reconstructing daily temperatures from growth rates of the intertidal bivalve mollusk Chione cortezi (northern Gulf of California, Mexico)

    Bernd R. Schöne;Jocelina Lega;Karl W. Flessa;David H. Goodwin

  • Biogeography and paleobiology

    David Jablonski;Karl W. Flessa;James W. Valentine

  • THE QUALITY OF THE FOSSIL RECORD: Populations, Species,

    Susan M. Kidwell;Karl W. Flessa

Frequent Co-Authors

David L. Dettman
David L. Dettman University of Arizona
Michał Kowalewski
Michał Kowalewski Florida Museum of Natural History
Edward P. Glenn
Edward P. Glenn University of Arizona
Bernd R. Schöne
Bernd R. Schöne Johannes Gutenberg University of Mainz
Pamela L. Nagler
Pamela L. Nagler University of Arizona
Susan M. Kidwell
Susan M. Kidwell University of Chicago
Jennifer C. McIntosh
Jennifer C. McIntosh University of Arizona
Christopher J. Eastoe
Christopher J. Eastoe University of Arizona
Glenn A. Goodfriend
Glenn A. Goodfriend George Washington University
David Jablonski
David Jablonski University of Chicago

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