World's Best Scientists 2026 revealed!

D-Index & Metrics

Earth Science

D-Index
54
Citations
9769
World Ranking
2722
National Ranking
1127

Robert C. Graham 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 Robert C. Graham 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: 176 publications — 50th percentile

50% of scientists in this discipline score the same or lower.

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

Robert C. Graham 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 Robert C. Graham 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: 54 D-Index — 66th percentile

66% 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

  • 2002 - Fellow of the Soil Science Society of America (SSSA)

Overview

Robert C. Graham is affiliated with the University of California, Riverside in the United States. Their research primarily focuses on environmental science, with significant contributions to subfields that include ecology, soil science, civil and structural engineering, environmental engineering, and atmospheric science.

Their scientific work encompasses a range of topics related to soil and environmental systems. Major research areas include soil and unsaturated flow, microbial community ecology and physiology, polar research and ecology, soil carbon and nitrogen dynamics, geology and paleoclimatology research, groundwater flow and contamination studies, and soil erosion and sediment transport.

Recent publications by Robert C. Graham cover various aspects of soil microbial activity, hydrology, and mineral dynamics. Notable papers include:

  • Depth dependence of climatic controls on soil microbial community activity and composition, 2021, ISME Communications
  • Disturbance impacts on porosity and hydraulic properties of vesicular horizons, 2020, Soil Science Society of America Journal
  • Depth dependence of climatic controls on soil microbial community activity and composition, 2021, Research Square (Research Square)
  • Microbial activity and temperature change affect growth of vesicular pores, 2022, Geoderma
  • Complexity of clay minerals and its effects on silicon dynamics in hypersaline coastal wetland soils, Brazil, 2023, Soil Research

Robert C. Graham has published frequently in several scientific venues, including:

  • Soil Science Society of America Journal
  • ISME Communications
  • Geoderma
  • Soil Research
  • Research Square (Research Square)

The scientist has collaborated multiple times with co-authors such as Nicholas C. Dove, Morgan Barnes, Kimber Moreland, Asmeret Asefaw Berhe, and Stephen C. Hart.

Throughout their career, Robert C. Graham has received recognition including being named a Fellow of the Soil Science Society of America (SSSA) in 2002.

Best Publications

  • Wood-ash composition and soil pH following intense burning

    A.L. Ulery;R.C. Graham;C. Amrhein

  • X-Ray Diffraction and the Identification and Analysis of Clay Minerals.

    Robert C. Graham

  • A direct link between forest vegetation type and soil organic matter composition

    S.A Quideau;O.A Chadwick;A Benesi;R.C Graham

  • Soil Genesis and Classification: Buol/Soil Genesis and Classification

    S. W. Buol;R. J. Southard;R. C. Graham;P. A. McDaniel

  • Forest Fire Effects on Soil Color and Texture

    A. L. Ulery;R. C. Graham

  • Rock to regolith conversion: Producing hospitable substrates for terrestrial ecosystems

    Robert Graham;Ann Rossi;R. Hubbert

  • Prescribed burning effects on soil physical properties and soil water repellency in a steep chaparral watershed, southern California, USA

    K.R. Hubbert;H.K. Preisler;P.M. Wohlgemuth;R.C. Graham

  • Spatial distribution and properties of ash and thermally altered soils after high-severity forest fire, southern California

    Brett R. Goforth;Robert C. Graham;Kenneth R. Hubbert;C. William Zanner

  • Contributions of water supply from the weathered bedrock zone to forest soil quality

    James H. Witty;Robert C. Graham;Kenneth R. Hubbert;James A. Doolittle

  • Ectomycorrhizae in a soil-weathered granitic bedrock regolith: linking matrix resources to plants

    M.A. Bornyasz;R.C. Graham;M.F. Allen

  • Soil organic matter processes: characterization by 13C NMR and 14C measurements

    S. A. Quideau;M. A. Anderson;R. C. Graham;O. A. Chadwick

  • Serpentine Geoecology of Western North America: Geology, Soils, and Vegetation

    Robert C. Graham

  • Physical and chemical properties of Pinus ponderosa charcoal: implications for soil modification.

    Christopher Briggs;Joan M. Breiner;Robert C. Graham

  • Vegetation control on soil organic matter dynamics

    S. A. Quideau;O. A. Chadwick;Susan E. Trumbore;J. L. Johnson-Maynard

  • Pedogenesis of Vesicular Horizons, Cima Volcanic Field, Mojave Desert, California

    K. Anderson;S. Wells;R. Graham

  • Roles of weathered bedrock and soil in seasonal water relations of Pinus Jeffreyi and Arctostaphylos patula

    K. R. Hubbert;J. L. Beyers;R. C. Graham

  • Root distribution and seasonal water status in weathered granitic bedrock under chaparral

    P. D. Sternberg;M. A. Anderson;R. C. Graham;J. L. Beyers

  • Dissolution of ripidolite (Mg, Fe-chlorite) in organic and inorganic acid solutions

    M. Hamer;R. C. Graham;C. Amrhein;K. N. Bozhilov

  • Bulk Density Determination by Automated Three-Dimensional Laser Scanning

    Ann M. Rossi;Daniel R. Hirmas;Robert C. Graham;Paul D. Sternberg

  • Decade-scale changes of soil carbon, nitrogen and exchangeable cations under chaparral and pine

    A.L. Ulery;R.C. Graham;O.A. Chadwick;H.B. Wood

Frequent Co-Authors

Sylvie A. Quideau
Sylvie A. Quideau University of Alberta
Oliver A. Chadwick
Oliver A. Chadwick University of California, Santa Barbara
Peter J. Shouse
Peter J. Shouse Agricultural Research Service
Paul F. Hendrix
Paul F. Hendrix University of Georgia
Michael F. Allen
Michael F. Allen University of California, Riverside
Stephen G. Wells
Stephen G. Wells New Mexico Institute of Mining and Technology
Ronald Amundson
Ronald Amundson University of California, Berkeley
Susan E. Trumbore
Susan E. Trumbore Max Planck Institute for Biogeochemistry
Stephen H. Anderson
Stephen H. Anderson University of Missouri
Laosheng Wu
Laosheng Wu University of California, Riverside

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