World's Best Scientists 2026 revealed!

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Earth Science 54 2722 2481 1127 1001 176 9769

Robert C. Graham publications per year

The chart shows the history of publications by Robert C. Graham between 1983 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Robert C. Graham published across 43 years, from 1983 to 2025, averaging 4.4 papers a year. Output peaked at 30 publications in 2011. 2 of the 190 publications appeared in the last two years.

No. of publications
10 20 30
Bar chart. Horizontal axis: year, 1983 to 2025. Vertical axis: number of publications, 0 to 30. Peak 30 publications in 2011. 1983: 1 publication 1984: 0 publications 1985: 0 publications 1986: 0 publications 1987: 1 publication 1988: 3 publications 1989: 4 publications 1990: 5 publications 1991: 1 publication 1992: 4 publications 1993: 8 publications 1994: 5 publications 1995: 5 publications 1996: 6 publications 1997: 5 publications 1998: 2 publications 1999: 3 publications 2000: 2 publications 2001: 7 publications 2002: 5 publications 2003: 6 publications 2004: 10 publications 2005: 9 publications 2006: 9 publications 2007: 1 publication 2008: 9 publications 2009: 1 publication 2010: 11 publications 2011: 30 publications 2012: 3 publications 2013: 4 publications 2014: 3 publications 2015: 4 publications 2016: 4 publications 2017: 5 publications 2018: 4 publications 2019: 3 publications 2020: 1 publication 2021: 2 publications 2022: 1 publication 2023: 1 publication 2024: 1 publication 2025: 1 publication
1983 2025

190 publications in total across all disciplines

View publications per year as a table
Robert C. Graham: publications per year, 1983 to 2025
Year Publications
1983 1
1984 0
1985 0
1986 0
1987 1
1988 3
1989 4
1990 5
1991 1
1992 4
1993 8
1994 5
1995 5
1996 6
1997 5
1998 2
1999 3
2000 2
2001 7
2002 5
2003 6
2004 10
2005 9
2006 9
2007 1
2008 9
2009 1
2010 11
2011 30
2012 3
2013 4
2014 3
2015 4
2016 4
2017 5
2018 4
2019 3
2020 1
2021 2
2022 1
2023 1
2024 1
2025 1
Total 190
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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.

No. of scientists
100 200 300 400 500
Bar chart with 58 bars. Horizontal axis: publications, 38–47 to 603+. Vertical axis: number of scientists, 0 to 557. Most scientists, 557, have 128–137 publications. The last bar groups every scientist with 603 publications or more. The highlighted bar, 168–177 publications, is where this scientist sits. 38–47 publications: 5 scientists 48–57 publications: 33 scientists 58–67 publications: 94 scientists 68–77 publications: 161 scientists 78–87 publications: 278 scientists 88–97 publications: 376 scientists 98–107 publications: 404 scientists 108–117 publications: 484 scientists 118–127 publications: 540 scientists 128–137 publications: 557 scientists 138–147 publications: 491 scientists 148–157 publications: 495 scientists 158–167 publications: 458 scientists 168–177 publications: 490 scientists 178–187 publications: 414 scientists 188–197 publications: 401 scientists 198–207 publications: 333 scientists 208–217 publications: 292 scientists 218–227 publications: 290 scientists 228–237 publications: 262 scientists 238–247 publications: 243 scientists 248–257 publications: 208 scientists 258–267 publications: 185 scientists 268–277 publications: 147 scientists 278–287 publications: 128 scientists 288–297 publications: 119 scientists 298–307 publications: 120 scientists 308–317 publications: 107 scientists 318–327 publications: 93 scientists 328–337 publications: 87 scientists 338–347 publications: 64 scientists 348–357 publications: 87 scientists 358–367 publications: 60 scientists 368–377 publications: 60 scientists 378–387 publications: 34 scientists 388–397 publications: 50 scientists 398–407 publications: 44 scientists 408–417 publications: 31 scientists 418–427 publications: 39 scientists 428–437 publications: 27 scientists 438–447 publications: 36 scientists 448–457 publications: 27 scientists 458–467 publications: 29 scientists 468–477 publications: 30 scientists 478–487 publications: 19 scientists 488–497 publications: 15 scientists 498–507 publications: 18 scientists 508–517 publications: 19 scientists 518–527 publications: 16 scientists 528–537 publications: 10 scientists 538–547 publications: 11 scientists 548–557 publications: 14 scientists 558–567 publications: 11 scientists 568–577 publications: 7 scientists 578–587 publications: 14 scientists 588–597 publications: 5 scientists 598–602 publications: 4 scientists 603+ publications: 100 scientists
38–47 publications 603+

This scientist: 176 publications — 53rd percentile

53% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 603 publications or more.

View publications distribution as a table
Number of Earth Science scientists by publication count, Research.com 2026 ranking edition. Based on 9,176 ranked scientists.
Publications Scientists This scientist
38–47 5
48–57 33
58–67 94
68–77 161
78–87 278
88–97 376
98–107 404
108–117 484
118–127 540
128–137 557
138–147 491
148–157 495
158–167 458
168–177 490 176
178–187 414
188–197 401
198–207 333
208–217 292
218–227 290
228–237 262
238–247 243
248–257 208
258–267 185
268–277 147
278–287 128
288–297 119
298–307 120
308–317 107
318–327 93
328–337 87
338–347 64
348–357 87
358–367 60
368–377 60
378–387 34
388–397 50
398–407 44
408–417 31
418–427 39
428–437 27
438–447 36
448–457 27
458–467 29
468–477 30
478–487 19
488–497 15
498–507 18
508–517 19
518–527 16
528–537 10
538–547 11
548–557 14
558–567 11
568–577 7
578–587 14
588–597 5
598–602 4
603+ 100
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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.

No. of scientists
100 200 300
Bar chart with 77 bars. Horizontal axis: D-Index, 30 to 106+. Vertical axis: number of scientists, 0 to 389. Most scientists, 389, have 36 D-Index. The last bar groups every scientist with 106 D-Index or more. The highlighted bar, 54 D-Index, is where this scientist sits. 30 D-Index: 144 scientists 31 D-Index: 215 scientists 32 D-Index: 278 scientists 33 D-Index: 379 scientists 34 D-Index: 366 scientists 35 D-Index: 372 scientists 36 D-Index: 389 scientists 37 D-Index: 366 scientists 38 D-Index: 344 scientists 39 D-Index: 349 scientists 40 D-Index: 296 scientists 41 D-Index: 289 scientists 42 D-Index: 277 scientists 43 D-Index: 279 scientists 44 D-Index: 248 scientists 45 D-Index: 257 scientists 46 D-Index: 212 scientists 47 D-Index: 202 scientists 48 D-Index: 207 scientists 49 D-Index: 204 scientists 50 D-Index: 183 scientists 51 D-Index: 178 scientists 52 D-Index: 182 scientists 53 D-Index: 178 scientists 54 D-Index: 163 scientists 55 D-Index: 117 scientists 56 D-Index: 163 scientists 57 D-Index: 120 scientists 58 D-Index: 113 scientists 59 D-Index: 136 scientists 60 D-Index: 135 scientists 61 D-Index: 96 scientists 62 D-Index: 103 scientists 63 D-Index: 83 scientists 64 D-Index: 103 scientists 65 D-Index: 83 scientists 66 D-Index: 89 scientists 67 D-Index: 92 scientists 68 D-Index: 89 scientists 69 D-Index: 78 scientists 70 D-Index: 75 scientists 71 D-Index: 53 scientists 72 D-Index: 62 scientists 73 D-Index: 54 scientists 74 D-Index: 35 scientists 75 D-Index: 52 scientists 76 D-Index: 50 scientists 77 D-Index: 32 scientists 78 D-Index: 37 scientists 79 D-Index: 20 scientists 80 D-Index: 33 scientists 81 D-Index: 36 scientists 82 D-Index: 34 scientists 83 D-Index: 34 scientists 84 D-Index: 24 scientists 85 D-Index: 19 scientists 86 D-Index: 18 scientists 87 D-Index: 26 scientists 88 D-Index: 30 scientists 89 D-Index: 17 scientists 90 D-Index: 21 scientists 91 D-Index: 19 scientists 92 D-Index: 15 scientists 93 D-Index: 14 scientists 94 D-Index: 20 scientists 95 D-Index: 9 scientists 96 D-Index: 10 scientists 97 D-Index: 15 scientists 98 D-Index: 13 scientists 99 D-Index: 3 scientists 100 D-Index: 13 scientists 101 D-Index: 3 scientists 102 D-Index: 9 scientists 103 D-Index: 4 scientists 104 D-Index: 6 scientists 105 D-Index: 6 scientists 106+ D-Index: 98 scientists
30 D-Index 106+

This scientist: 54 D-Index — 71st percentile

71% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 106 D-Index or more.

View D-Index distribution as a table
Number of Earth Science scientists by D-index, Research.com 2026 ranking edition. Based on 9,176 ranked scientists.
D-Index Scientists This scientist
30 144
31 215
32 278
33 379
34 366
35 372
36 389
37 366
38 344
39 349
40 296
41 289
42 277
43 279
44 248
45 257
46 212
47 202
48 207
49 204
50 183
51 178
52 182
53 178
54 163 54
55 117
56 163
57 120
58 113
59 136
60 135
61 96
62 103
63 83
64 103
65 83
66 89
67 92
68 89
69 78
70 75
71 53
72 62
73 54
74 35
75 52
76 50
77 32
78 37
79 20
80 33
81 36
82 34
83 34
84 24
85 19
86 18
87 26
88 30
89 17
90 21
91 19
92 15
93 14
94 20
95 9
96 10
97 15
98 13
99 3
100 13
101 3
102 9
103 4
104 6
105 6
106+ 98
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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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