World's Best Scientists 2026 revealed!

D-Index & Metrics

Environmental Sciences

D-Index
65
Citations
14744
World Ranking
2211
National Ranking
898

Microbiology

D-Index
59
Citations
12244
World Ranking
3275
National Ranking
1295

Ian L. Pepper 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 Ian L. Pepper 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: 274 publications — 82nd percentile

82% of scientists in this discipline score the same or lower.

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

Ian L. Pepper 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 Ian L. Pepper 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: 65 D-Index — 78th percentile

78% 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

  • 2006 - Fellow of the American Association for the Advancement of Science (AAAS)
  • 1994 - Fellow of the Soil Science Society of America (SSSA)
  • 1993 - Fellow of the American Society of Agronomy (ASA)
  • 1983 - Syngenta Crop Protection Recognition Award, American Society of Agronomy

Overview

Ian L. Pepper is affiliated with the University of Arizona in the United States. Their research primarily spans the fields of Medicine and Environmental Science, with focused contributions in Infectious Diseases, Health, Toxicology and Mutagenesis, Ecology, Biomedical Engineering, and Molecular Biology.

The scientist's main topics of work include:

  • SARS-CoV-2 detection and testing
  • SARS-CoV-2 and COVID-19 Research
  • Biosensors and Analytical Detection
  • Water Treatment and Disinfection
  • COVID-19 Clinical Research Studies
  • Per- and polyfluoroalkyl substances research
  • Toxic Organic Pollutants Impact

Frequent co-authors collaborating with Ian L. Pepper are:

  • Bradley W. Schmitz
  • Gabriel K. Innes
  • Walter Q. Betancourt
  • Aidan R. Foster
  • Charles P. Gerba

Regular publication venues include:

  • The Science of The Total Environment
  • Journal of Visualized Experiments
  • bioRxiv (Cold Spring Harbor Laboratory)
  • Water Environment Research
  • Water Research

Recent papers authored or co-authored by Ian L. Pepper highlight topics in environmental science and public health surveillance, particularly related to wastewater epidemiology and pollutants:

  • Incidence of Pfas in soil following long-term application of class B biosolids, 2021, The Science of The Total Environment
  • COVID-19 containment on a college campus via wastewater-based epidemiology, targeted clinical testing and an intervention, 2021, The Science of The Total Environment
  • Enumerating asymptomatic COVID-19 cases and estimating SARS-CoV-2 fecal shedding rates via wastewater-based epidemiology, 2021, The Science of The Total Environment
  • Variant-specific SARS-CoV-2 shedding rates in wastewater, 2022, The Science of The Total Environment
  • Potential indicators of virus transport and removal during soil aquifer treatment of treated wastewater effluent, 2020, Water Research

Throughout their career, Ian L. Pepper has received several recognitions including:

  • Fellow of the American Association for the Advancement of Science (AAAS), 2006
  • Fellow of the Soil Science Society of America (SSSA), 1994
  • Fellow of the American Society of Agronomy (ASA), 1993
  • Syngenta Crop Protection Recognition Award, American Society of Agronomy, 1983

Best Publications

  • Polymerase chain reaction detection of nonviable bacterial pathogens.

    K L Josephson;C P Gerba;I L Pepper

  • Survival of Coronaviruses in Water and Wastewater

    Patricia M. Gundy;Charles P. Gerba;Ian L. Pepper

  • New Approaches for Bioaugmentation as a Remediation Technology

    Terry J. Gentry;Christopher Rensing;I. A. N. L. Pepper

  • Detection of enteroviruses in groundwater with the polymerase chain reaction.

    Morteza Abbaszadegan;M. S. Huber;C. P. Gerba;I. L. Pepper

  • Relative abundance and treatment reduction of viruses during wastewater treatment processes--identification of potential viral indicators

    Masaaki Kitajima;Brandon C. Iker;Ian L. Pepper;Charles P. Gerba

  • Confirmation of the Human-Pathogenic Microsporidia Enterocytozoon bieneusi, Encephalitozoon intestinalis, and Vittaforma corneae in Water

    Scot E. Dowd;Charles P. Gerba;Ian L. Pepper

  • Environmental and Pollution Science

    Ian L Pepper;Charles P Gerba;Mark L Brusseau

  • COVID-19 containment on a college campus via wastewater-based epidemiology, targeted clinical testing and an intervention.

    Walter Q. Betancourt;Bradley W. Schmitz;Gabriel K. Innes;Sarah M. Prasek

  • Environmental Microbiology: A Laboratory Manual

    Ian L. Pepper;Charles P. Gerba;Jeffrey W. Brendecke

  • Dual-bioaugmentation strategy to enhance remediation of cocontaminated soil.

    T. M. Roane;K. L. Josephson;I. L. Pepper

  • Specific detection of Salmonella spp. by multiplex polymerase chain reaction.

    J. S. Way;K. L. Josephson;S. D. Pillai;Morteza Abbaszadegan

  • Detection of protozoan parasites and microsporidia in irrigation waters used for crop production.

    Jeanette A. Thurston-Enriquez;Pamela Watt;Scot E. Dowd;Ricardo Enriquez

  • Application of PCR-based methods to assess the infectivity of enteric viruses in environmental samples.

    Roberto A. Rodríguez;Ian L. Pepper;Charles P. Gerba

  • Microbial Responses to Environmentally Toxic Cadmium.

    T.M. Roane;I.L. Pepper

  • Characterization and quantification of bacterial pathogens and indicator organisms in household kitchens with and without the use of a disinfectant cleaner.

    K.L. Josephson;J.R. Rubino;I.L. Pepper

  • Detection of infectious enteroviruses by an integrated cell culture-PCR procedure.

    Kelly A. Reynolds;Charles P. Gerba;Ian L. Pepper

  • Hazards from pathogenic microorganisms in land-disposed sewage sludge.

    Timothy M. Straub;Ian L. Pepper;Charles P. Gerba

  • Gene transfer of Alcaligenes eutrophus JMP134 plasmid pJP4 to indigenous soil recipients.

    G D DiGiovanni;J W Neilson;I L Pepper;N A Sinclair

  • Environmental Monitoring and Characterization

    Janick F. Artiola;Ian L. Pepper;Mark L. Brusseau

  • Rapid method for processing soil samples for polymerase chain reaction amplification of specific gene sequences

    S D Pillai;K L Josephson;R L Bailey;C P Gerba

Frequent Co-Authors

Charles P. Gerba
Charles P. Gerba University of Arizona
Terry J. Gentry
Terry J. Gentry Texas A&M University
Raina M. Maier
Raina M. Maier University of Arizona
Christopher Rensing
Christopher Rensing Fujian Agriculture and Forestry University
Mark L. Brusseau
Mark L. Brusseau University of Arizona
Shane A. Snyder
Shane A. Snyder Georgia Institute of Technology
Scot E. Dowd
Scot E. Dowd MR DNA (Molecular Research LP)
Charles N. Haas
Charles N. Haas Drexel University
Michael J. Ottman
Michael J. Ottman University of Arizona
Joan B. Rose
Joan B. Rose Michigan State University

If you think any of the details on this page are incorrect, let us know.

Report an issue

We appreciate your kind effort to assist us to improve this page, it would be helpful providing us with as much detail as possible in the text box below:

Related Online Degrees & Career Pathways

Studying Environmental Sciences opens up diverse career pathways, many of which can be enhanced through related online degrees. For instance, a gis degree provides specialized skills in spatial data analysis, critical for environmental planning and resource management.

Leadership and policy advocacy roles often benefit from administrative expertise. Pursuing an online mpa degrees helps professionals develop public administration skills that drive effective environmental governance and sustainable community initiatives.

Understanding societal impacts is also crucial in environmental fields. A best online bachelor degree in sociology equips students with insights into human behavior, social structures, and environmental justice issues, enhancing their ability to advocate for equitable solutions.

For educators aiming to influence environmental education, flexible options like an edd no dissertation program allow advancement in educational leadership without the traditional dissertation hurdle, facilitating quicker entry into impactful teaching and curriculum development roles.

Best Scientists Citing Ian L. Pepper

Trending Scientists

Recently Published Articles