World's Best Scientists 2026 revealed!

D-Index & Metrics

Environmental Sciences

D-Index
43
Citations
10171
World Ranking
6966
National Ranking
2483

Richard L. Johnson 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 Richard L. Johnson 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: 282 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: 26 scientists 501–510 publications: 17 scientists 511–520 publications: 19 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 681–689 publications: 4 scientists 690+ publications: 100 scientists
41 publications 690+

This scientist: 123 publications — 26th percentile

26% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 690 publications or more.

Richard L. Johnson 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 Richard L. Johnson 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: 198 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: 20 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: 9 scientists 126+ D-Index: 92 scientists
30 D-Index 126+

This scientist: 43 D-Index — 29th percentile

29% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 126 D-Index or more.

Overview

Richard L. Johnson is affiliated with Oregon Health & Science University in the United States. Their research primarily spans the fields of Social Sciences and Agricultural and Biological Sciences, with a specific focus on Sociology and Political Science as well as General Agricultural and Biological Sciences.

Their recent publications demonstrate engagement with topics related to agriculture, land use, rural development, and the intersections of migration, labor dynamics, and sustainability. Notable papers include:

  • In the Shadow of the Green Revolution: Constrained Spatial Imaginaries and Smallholder Farming in Guatemala's Pacific Lowlands, 2022, published in The Professional Geographer
  • Reversing Channels and Unsettling Binaries: Rethinking Migration and Agrarian Change under Expanded Border and Immigration Enforcement, 2021, published in Land
  • An Investigation of Methods for Estimating Marginal Values of Irrigation Water, 2021, published in Utah State Research and Scholarship (Utah State University)
  • Emotions and gendered experiences of livelihood migration: memos from Nicaragua and Guatemala, 2023, published in Gender Place & Culture
  • Linkages between international migration and agrarian extractivism in Guatemala, 2025, forthcoming in The Journal of Peasant Studies

Their research topics include:

  • Agriculture, Land Use, Rural Development
  • Global trade, sustainability, and social impact
  • Migration and Labor Dynamics
  • Climate Change, Adaptation, Migration
  • Organic Food and Agriculture
  • Sex work and related issues
  • Migration, Ethnicity, and Economy

Frequent collaborators include Birgit Schmook, Claudia Radel, and Lindsey Carte, each co-authoring multiple works with Johnson. Their work has been published across venues such as The Professional Geographer, Land, Gender Place & Culture, The Journal of Peasant Studies, and Utah State Research and Scholarship, reflecting a multidisciplinary approach.

The focus of the research centers on complex socio-environmental dynamics involving migration, agricultural practices, and rural livelihoods, often addressing how broader political and economic changes affect local communities in regions such as Guatemala and Nicaragua.

Best Publications

  • Nanotechnologies for environmental cleanup

    Paul G. Tratnyek;Richard L. Johnson

  • Oxidation of chlorinated ethenes by heat-activated persulfate : Kinetics and products

    Rachel H. Waldemer;Paul G. Tratnyek;Richard L. Johnson;James T. Nurmi

  • Persulfate persistence under thermal activation conditions.

    Richard L. Johnson;Paul G. Tratnyek;Reid O. 'Brien Johnson

  • Diffusion of the Interspecies Electron Carriers H2 and Formate in Methanogenic Ecosystems and Its Implications in the Measurement of Km for H2 or Formate Uptake

    David R. Boone;Richard L. Johnson;Yitai Liu

  • Cross-hole electrical imaging of a controlled saline tracer injection

    Lee Slater;Andrew Binley;W. Daily;R. Johnson

  • Sulfidation of Iron-Based Materials: A Review of Processes and Implications for Water Treatment and Remediation.

    Dimin Fan;Ying Lan;Paul G. Tratnyek;Richard L. Johnson

  • Peer Reviewed: MTBE-To What Extent Will Past Releases Contaminate Community Water Supply Wells?

    Richard Johnson;James Pankow;David A. Bender;Curtis Price

  • Sulfidation of Nano Zerovalent Iron (nZVI) for Improved Selectivity During In-Situ Chemical Reduction (ISCR)

    Dimin Fan;Graham O’Brien Johnson;Paul G. Tratnyek;Richard L. Johnson

  • Natural organic matter enhanced mobility of nano zerovalent iron.

    Richard L. Johnson;Graham O. 'Brien Johnson;James T. Nurmi;Paul G. Tratnyek

  • Diffusive contaminant transport in natural clay: a field example and implications for clay-lined waste disposal sites

    Richard L. Johnson;John A. Cherry;James F. Pankow

  • An Overview of In Situ Air Sparging

    R.L. Johnson;P.C. Johnson;D.B. McWhorter;R.E. Hinchee

  • Dissolution of dense chlorinated solvents into groundwater. 2. Source functions for pools of solvent

    Richard L. Johnson;James F. Pankow

  • Field-Scale Transport and Transformation of Carboxymethylcellulose-Stabilized Nano Zero-Valent Iron

    Richard L. Johnson;James T. Nurmi;Graham S. O’Brien Johnson;Dimin Fan

  • Analysis of Organic and Elemental Carbon in Ambient Aerosols by a Thermal-Optical Method

    James J. Huntzicker;R. L. Johnson;J. J. Shah;R. A. Cary

  • Dissolution of dense chlorinated solvents into groundwater. 3. Modeling contaminant plumes from fingers and pools of solvent

    Michael R. Anderson;Richard L. Johnson;James F. Pankow

  • The Urban Atmosphere as a Non-Point Source for the Transport of MTBE and Other Volatile Organic Compounds (VOCs) to Shallow Groundwater

    James F. Pankow;Neil R. Thomson;Richard L. Johnson;and Arthur L. Baehr

  • Dissolution of Dense Chlorinated Solvents into Ground Water: 1. Dissolution from a Well-Defined Residual Source

    Michael R. Anderson;Richard L. Johnson;James F. Pankow

  • Transport of volatile organic compounds across the capillary fringe

    Kathleen A. McCarthy;Richard L. Johnson

  • An Automated Thermal-Optical Method for the Analysis of Carbonaceous Aerosol

    Richard L. Johnson;Jitendra J. Shah;Robert A. Cary;James J. Huntzicker

  • Using virtual reality in the classroom: preservice teachers' perceptions of its use as a teaching and learning tool

    Grant Cooper;Hayden Park;Zahra Nasr;Li Ping Thong

  • Carbonaceous Aerosol at Urban and Rural Sites in the United States

    Jitendra J. Shah;Richard L. Johnson;Emily K. Heyerdahl;James J. Huntzicker

Frequent Co-Authors

Paul G. Tratnyek
Paul G. Tratnyek Oregon Health & Science University
Paul C. Johnson
Paul C. Johnson Arizona State University
James F. Pankow
James F. Pankow Portland State University
John A. Cherry
John A. Cherry University of Guelph
Brent E. Sleep
Brent E. Sleep University of Toronto
Gregory V. Lowry
Gregory V. Lowry Carnegie Mellon University
Denis M. O'Carroll
Denis M. O'Carroll University of New South Wales
Hooman Allayee
Hooman Allayee University of Southern California
Caleb E. Finch
Caleb E. Finch University of Southern California
Constantinos Sioutas
Constantinos Sioutas University of Southern California

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