World's Best Scientists 2026 revealed!

D-Index & Metrics

Environmental Sciences

D-Index
62
Citations
11386
World Ranking
2660
National Ranking
1066

Chemistry

D-Index
58
Citations
9815
World Ranking
10827
National Ranking
2974

Paul M. Bradley 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 Paul M. Bradley 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: 248 publications — 77th percentile

77% of scientists in this discipline score the same or lower.

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

Paul M. Bradley 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 Paul M. Bradley 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: 62 D-Index — 74th percentile

74% of scientists in this discipline score the same or lower.

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

Overview

Paul M. Bradley is affiliated with the United States Geological Survey in the United States. Their primary field of study is Environmental Science, with a focus on several subfields including Health, Toxicology and Mutagenesis, Pollution, Environmental Chemistry, Water Science and Technology, and Ecology.

Their research spans multiple main topics, reflecting a broad engagement in environmental and toxicological studies. These topics include Pharmaceutical and Antibiotic Environmental Impacts, Toxic Organic Pollutants Impact, Per- and Polyfluoroalkyl Substances Research, Water Treatment and Disinfection, Environmental Toxicology and Ecotoxicology, Fish Ecology and Management Studies, and Fecal Contamination and Water Quality.

The scientist has published extensively, with frequent appearances in leading journals. Notable publication venues include The Science of The Total Environment, Environmental Science & Technology, Environment International, Environmental Science Water Research & Technology, and Chemosphere.

Recent significant papers authored or co-authored by Paul M. Bradley include:

  • Per- and polyfluoroalkyl substances (PFAS) in United States tapwater: Comparison of underserved private-well and public-supply exposures and associated health implications, 2023, Environment International
  • Landfill leachate contributes per-/poly-fluoroalkyl substances (PFAS) and pharmaceuticals to municipal wastewater, 2020, Environmental Science Water Research & Technology
  • Machine Learning Models of Arsenic in Private Wells Throughout the Conterminous United States As a Tool for Exposure Assessment in Human Health Studies, 2021, Environmental Science & Technology
  • Density declines, richness increases, and composition shifts in stream macroinvertebrates, 2023, Science Advances
  • Inclusion of Pesticide Transformation Products Is Key to Estimating Pesticide Exposures and Effects in Small U.S. Streams, 2021, Environmental Science & Technology

Collaborative work is an evident part of their career. Frequent co-authors include Kelly L. Smalling, Kristin M. Romanok, James L. Gray, Dana W. Kolpin, and Stephanie E. Gordon, illustrating sustained contributions within a network of environmental scientists.

Best Publications

  • A hydrogen-based subsurface microbial community dominated by methanogens

    Francis H. Chapelle;Kathleen O'Neill;Paul M. Bradley;Barbara A. Methé

  • Expanded Target-Chemical Analysis Reveals Extensive Mixed-Organic-Contaminant Exposure in U.S. Streams

    Paul M. Bradley;Celeste A. Journey;Kristin M. Romanok;Larry B. Barber

  • History and Ecology of Chloroethene Biodegradation: A Review

    Paul M. Bradley

  • Anaerobic Mineralization of Vinyl Chloride in Fe(III)-Reducing, Aquifer Sediments

    Paul M. Bradley;Francis H. Chapelle

  • Urban Stormwater: An Overlooked Pathway of Extensive Mixed Contaminants to Surface and Groundwaters in the United States.

    Jason R. Masoner;Dana W. Kolpin;Isabelle M. Cozzarelli;Larry B. Barber

  • Humic Acids as Electron Acceptors for Anaerobic Microbial Oxidation of Vinyl Chloride and Dichloroethene

    Paul M. Bradley;Francis H. Chapelle;Derek R. Lovley

  • Influence of Oxygen and Sulfide Concentration on Nitrogen Uptake Kinetics in Spartina Alterniflora

    Paul M. Bradley;James T. Morris

  • Comparison of Eh and H2 Measurements for Delineating Redox Processes in a Contaminated Aquifer

    Francis H. Chapelle;Sheridan K. Haack;Peter Adriaens;Mark A. Henry

  • Measuring Rates of Biodegradation in a Contaminated Aquifer Using Field and Laboratory Methods

    Francis H. Chapelle;Paul M. Bradley;Derek R. Lovley;Don A. Vroblesky

  • Aerobic Mineralization of MTBE and tert-Butyl Alcohol by Stream-Bed Sediment Microorganisms

    Paul M. Bradley;James E. Landmeyer;Francis H. Chapelle

  • Kinetics of DCE and VC mineralization under methanogenic and Fe(III)- reducing conditions

    Paul M. Bradley;Francis H. Chapelle

  • Effects of nutrient loading on the carbon balance of coastal wetland sediments

    James T. Morris;Paul M. Bradley

  • Microbial degradation of chloroethenes in groundwater systems

    Paul M. Bradley

  • Landfill leachate contributes per-/poly-fluoroalkyl substances (PFAS) and pharmaceuticals to municipal wastewater

    Jason R. Masoner;Dana W. Kolpin;Isabelle M. Cozzarelli;Kelly L. Smalling

  • Fate of sulfamethoxazole, 4-nonylphenol, and 17β-estradiol in groundwater contaminated by wastewater treatment plant effluent

    Larry B Barber;Steffanie H Keefe;Denis R Leblanc;Paul M Bradley

  • Biotransformation of caffeine, cotinine, and nicotine in stream sediments: implications for use as wastewater indicators.

    Paul M. Bradley;Larry B. Barber;Dana W. Kolpin;Peter B. McMahon

  • Relative Importance of Ion Exclusion, Secretion and Accumulation in Spartina alterniflora Loisel.

    Paul M. Bradley;James T. Morris

  • Effect of Contaminant Concentration on Aerobic Microbial Mineralization of DCE and VC in Stream-Bed Sediments

    Paul M. Bradley;Francis H. Chapelle

  • Fate of MTBE Relative to Benzene in a Gasoline-Contaminated Aquifer (1993–98)

    James E. Landmeyer;Francis H. Chapelle;Paul M. Bradley;James F. Pankow;James F. Pankow;James F. Pankow

  • Microbial mineralization of VC and DCE under different terminal electron accepting conditions.

    Paul M. Bradley;Francis H. Chapelle

  • Aerobic biodegradation potential of subsurface microorganisms from a jet fuel-contaminated aquifer.

    C M Aelion;P M Bradley

Frequent Co-Authors

Francis H. Chapelle
Francis H. Chapelle United States Geological Survey
Dana W. Kolpin
Dana W. Kolpin United States Geological Survey
Douglas A. Burns
Douglas A. Burns United States Geological Survey
Larry B. Barber
Larry B. Barber United States Geological Survey
Heather E. Golden
Heather E. Golden Environmental Protection Agency
Peter B. McMahon
Peter B. McMahon United States Geological Survey
Michelle L. Hladik
Michelle L. Hladik United States Geological Survey
James T. Morris
James T. Morris University of South Carolina
William A. Battaglin
William A. Battaglin United States Geological Survey
Peter C. Van Metre
Peter C. Van Metre United States Geological Survey

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