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Environmental Sciences
Australia
2023

D-Index & Metrics

Environmental Sciences

D-Index
71
Citations
16155
World Ranking
1612
National Ranking
74

R. J. Gilkes 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 R. J. Gilkes 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: 1,337 publications — 100th percentile

100% of scientists in this discipline score the same or lower.

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

R. J. Gilkes 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 R. J. Gilkes 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: 71 D-Index — 84th percentile

84% 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

  • 2023 - Research.com Environmental Sciences in Australia Leader Award
  • 1990 - Fellow of the Soil Science Society of America (SSSA)

Overview

R. J. Gilkes is affiliated with the University of Western Australia and has contributed to research primarily in the fields of Environmental Science and Agricultural and Biological Sciences. Their work encompasses several subfields including Soil Science, Biomaterials, Environmental Engineering, Civil and Structural Engineering, and aspects of Management, Monitoring, Policy, and Law.

Their research topics focus notably on Soil Carbon and Nitrogen Dynamics, Clay minerals and soil interactions, Soil and Unsaturated Flow, Soil and Land Suitability Analysis, Paleontology and Stratigraphy of Fossils, CO2 Sequestration and Geologic Interactions, and Soil and Water Nutrient Dynamics.

Among the recent papers authored or coauthored by R. J. Gilkes are:

  • Effects of Biochar on Properties of Tropical Sandy Soils Under Organic Agriculture, 2020, Journal of Agricultural Science
  • Microbial influence on dolomite and authigenic clay mineralisation in dolocrete profiles of NW Australia, 2023, Geobiology
  • Influence of Application of Organic Residues of Different Biochemical Quality on Phosphorus Fractions in a Tropical Sandy Soil, 2021, Agronomy
  • Characterization of Pterocarpus macrocarpus (pradoo wood) biochar and its effect on the retention properties of sandy soils in Northeast Thailand, 2021, Soil Use and Management
  • The response of sweet corn to biochar and chemical fertilizer applications for a sandy soil, 2020, Journal of Agricultural and Crop Research

Frequent coauthors in their work include N. Prakongkep (4 collaborations), Claude Hammecker (3 collaborations), Worachart Wisawapipat (2 collaborations), Parapond Leksungnoen (2 collaborations), and Chanida Kerdchana.

R. J. Gilkes' publications have appeared in diverse venues including the Journal of Agricultural Science, Geobiology, Agronomy, Soil Use and Management, and the Journal of Agricultural and Crop Research.

The scientist was recognized with the title of Fellow of the Soil Science Society of America (SSSA) in 1990.

Best Publications

  • Pedogenesis and pre-Colombian land use of “Terra Preta Anthrosols” (“Indian black earth”) of Western Amazonia

    Hedinaldo N Lima;Carlos E.R Schaefer;Jaime W.V Mello;Robert J Gilkes

  • Dissolution of Iron Oxides and Oxyhydroxides in Hydrochloric and Perchloric Acids

    P. S. Sidhu;R. J. Gilkes;R. M. Cornell;A. M. Posner

  • Factors influencing the release of plant nutrient elements from silicate rock powders: a geochemical overview.

    A.D. Harley;Robert Gilkes

  • A minimum data set for assessing soil quality in rangelands

    Seyed Ata Rezaei;Robert J. Gilkes;Susan S. Andrews

  • Properties and distribution of iron oxides and their association with minor elements in the soils of south‐western Australia

    [No Value] Balwant Singh;R.J. Gilkes

  • Evaluation of bauxite residues (red muds) of different origins for environmental applications

    K. Snars;Robert Gilkes

  • The effects of landscape attributes and plant community on soil chemical properties in rangelands

    Seyed Ata Rezaei;Robert J. Gilkes

  • Phosphorus sorption in relation to soil properties for the major soil types of South-Western Australia

    B Singh;RJ Gilkes

  • Properties of soil kaolinites from south-western Australia

    B. Singh;R. J. Gilkes

  • Farm Monitoring Handbook

    N. Hunt;Robert Gilkes

  • A multivariate framework for interpreting the effects of soil properties, soil management and landuse on water repellency

    R.J. Harper;I. Mckissock;Robert Gilkes;D.J. Carter

  • Phosphorus Transformations and Their Relationships with Calcareous Soil Properties of Southern Western Australia

    A. Samadi;Robert Gilkes

  • The synthesis and some properties of Co, Ni, Zn, Cu, Mn and Cd substituted magnetites

    P.S. Sidhu;R.J. Gilkes;A.M. Posner

  • Mechanism of the low temperature oxidation of synthetic magnetites

    P.S. Sidhu;R.J. Gilkes;A.M. Posner

  • Mobilization of phosphate from phosphate rock and alumina-sorbed phosphate by the roots of ryegrass and clover as related to rhizosphere pH

    P. Hinsinger;Robert Gilkes

  • CLAY-SIZED MINERALS IN PERMAFROST-AFFECTED SOILS (CRYOSOLS) FROM KING GEORGE ISLAND, ANTARCTICA

    Felipe N. B. Simas;Carlos Ernesto G. R. Schaefer;Vander F. Melo;Marcelo B. B. Guerra

  • Dissolution of phosphate rock in the rhizosphere of five plant species grown in an acid, P-fixing mineral substrate

    Philippe Hinsinger;R.J. Gilkes

  • LATERITIC DEEP WEATHERING OF GRANITE

    R. J. Gilkes;G. Scholz;G. M. Dimmock

  • Soil physical quality of Luvisols under agroforestry, natural vegetation and conventional crop management systems in the Brazilian semi-arid region

    G.L. Silva;H.V. Lima;M.M. Campanha;Robert Gilkes

  • Soil attributes related to water repellency and the utility of soil survey for predicting its occurrence

    R.J. Harper;Robert Gilkes

  • Root-induced dissolution of phosphate rock in the rhizosphere of lupins grown in alkaline soil

    P. Hinsinger;Robert Gilkes

  • Proceedings of the 19th World Congress of Soil Science; Soil Solutions for a Changing World

    Robert Gilkes;Nattaporn Prakongkep;R. Gilkes;N. Prakongkep

Frequent Co-Authors

Balwant Singh
Balwant Singh University of Sydney
Nanthi Bolan
Nanthi Bolan University of Western Australia
Carlos Ernesto Gonçalves Reynaud Schaefer
Carlos Ernesto Gonçalves Reynaud Schaefer Universidade Federal de Viçosa
Ravi Naidu
Ravi Naidu University of Newcastle Australia
Brent Clothier
Brent Clothier Plant & Food Research
Mike J. McLaughlin
Mike J. McLaughlin University of Adelaide
Jeff Baldock
Jeff Baldock Commonwealth Scientific and Industrial Research Organisation
Rainer Horn
Rainer Horn Kiel University
Rob Fitzpatrick
Rob Fitzpatrick University of Adelaide
Alex B. McBratney
Alex B. McBratney University of Sydney

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