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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Earth Science 57 2229 2021 948 837 121 16743

Richard C. Dugdale publications per year

The chart shows the history of publications by Richard C. Dugdale between 1959 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Richard C. Dugdale published across 67 years, from 1959 to 2025, averaging 2.2 papers a year. Output peaked at 8 publications in 2006. 2 of the 145 publications appeared in the last two years.

No. of publications
2 4 6 8
Bar chart. Horizontal axis: year, 1959 to 2025. Vertical axis: number of publications, 0 to 8. Peak 8 publications in 2006. 1959: 2 publications 1960: 1 publication 1961: 2 publications 1962: 2 publications 1963: 0 publications 1964: 2 publications 1965: 2 publications 1966: 3 publications 1967: 2 publications 1968: 1 publication 1969: 2 publications 1970: 0 publications 1971: 3 publications 1972: 5 publications 1973: 1 publication 1974: 0 publications 1975: 2 publications 1976: 2 publications 1977: 2 publications 1978: 0 publications 1979: 1 publication 1980: 1 publication 1981: 0 publications 1982: 0 publications 1983: 2 publications 1984: 1 publication 1985: 2 publications 1986: 1 publication 1987: 5 publications 1988: 1 publication 1989: 3 publications 1990: 2 publications 1991: 1 publication 1992: 3 publications 1993: 0 publications 1994: 2 publications 1995: 2 publications 1996: 2 publications 1997: 4 publications 1998: 2 publications 1999: 1 publication 2000: 4 publications 2001: 2 publications 2002: 7 publications 2003: 2 publications 2004: 4 publications 2005: 3 publications 2006: 8 publications 2007: 3 publications 2008: 1 publication 2009: 0 publications 2010: 1 publication 2011: 5 publications 2012: 4 publications 2013: 5 publications 2014: 3 publications 2015: 2 publications 2016: 6 publications 2017: 2 publications 2018: 5 publications 2019: 2 publications 2020: 2 publications 2021: 1 publication 2022: 1 publication 2023: 0 publications 2024: 1 publication 2025: 1 publication
1959 2025

145 publications in total across all disciplines

View publications per year as a table
Richard C. Dugdale: publications per year, 1959 to 2025
Year Publications
1959 2
1960 1
1961 2
1962 2
1963 0
1964 2
1965 2
1966 3
1967 2
1968 1
1969 2
1970 0
1971 3
1972 5
1973 1
1974 0
1975 2
1976 2
1977 2
1978 0
1979 1
1980 1
1981 0
1982 0
1983 2
1984 1
1985 2
1986 1
1987 5
1988 1
1989 3
1990 2
1991 1
1992 3
1993 0
1994 2
1995 2
1996 2
1997 4
1998 2
1999 1
2000 4
2001 2
2002 7
2003 2
2004 4
2005 3
2006 8
2007 3
2008 1
2009 0
2010 1
2011 5
2012 4
2013 5
2014 3
2015 2
2016 6
2017 2
2018 5
2019 2
2020 2
2021 1
2022 1
2023 0
2024 1
2025 1
Total 145
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Richard C. Dugdale 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 Richard C. Dugdale 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, 118–127 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: 121 publications — 22nd percentile

22% 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
118–127 540 121
128–137 557
138–147 491
148–157 495
158–167 458
168–177 490
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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Richard C. Dugdale 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 Richard C. Dugdale 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, 57 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: 57 D-Index — 76th percentile

76% 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
55 117
56 163
57 120 57
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

  • 2010 - Fellow of American Geophysical Union (AGU)
  • 1963 - Fellow of the American Association for the Advancement of Science (AAAS)

Overview

Richard C. Dugdale is affiliated with San Francisco State University in the United States. Their research primarily focuses on Earth and Planetary Sciences and Environmental Science, with significant contributions in subfields such as Oceanography, Environmental Chemistry, Nature and Landscape Conservation, Ecology, and Pollution.

The scientist's research topics cover a range of areas including:

  • Marine and coastal ecosystems
  • Marine Biology and Ecology Research
  • Aquatic Ecosystems and Phytoplankton Dynamics
  • Fish Ecology and Management Studies
  • Oceanographic and Atmospheric Processes
  • Coastal wetland ecosystem dynamics
  • Wastewater Treatment and Nitrogen Removal

Dugdale has published research articles in various journals, including:

  • "The interannual variabilities of chlorophyll and nutrients in San Francisco Bay: a modeling study" (2020, Ocean Dynamics)
  • "Light Regulation of Phytoplankton Growth in San Francisco Bay Studied Using a 3D Sediment Transport Model" (2021, Frontiers in Marine Science)
  • "Ecosystem Recovery in Progress? Initial Nutrient and Phytoplankton Response to Nitrogen Reduction from Sewage Treatment Upgrade in the San Francisco Bay Delta" (2022, Nitrogen)
  • "Evaluating Modeling Approaches for Phytoplankton Productivity in Estuaries" (2025, Water)
  • "Patterns in Anthropogenic Nitrogen and Water Quality Leading to Phytoplankton Blooms in Urban Estuaries" (2024, Journal of Marine Science and Engineering)

The scientist has frequently collaborated with colleagues such as Frances P. Wilkerson, Alexander E. Parker, Zhengui Wang, Fei Chai, and Huijie Xue.

Frequent publication venues include:

  • Ocean Dynamics
  • Frontiers in Marine Science
  • Nitrogen
  • Water
  • Journal of Marine Science and Engineering

Richard C. Dugdale has been recognized with fellowships from major scientific associations, including being named a Fellow of the American Geophysical Union (AGU) in 2010 and a Fellow of the American Association for the Advancement of Science (AAAS) in 1963.

Best Publications

  • UPTAKE OF NEW AND REGENERATED FORMS OF NITROGEN IN PRIMARY PRODUCTIVITY1

    R. C. Dugdale;J. J. Goering

  • NUTRIENT LIMITATION IN THE SEA: DYNAMICS, IDENTIFICATION, AND SIGNIFICANCE1

    R. C. Dugdale

  • A review of the Si cycle in the modern ocean: recent progress and missing gaps in the application of biogenic opal as a paleoproductivity proxy

    O Ragueneau;P Tréguer;A Leynaert;R.F Anderson

  • Pluses and minuses of ammonium and nitrate uptake and assimilation by phytoplankton and implications for productivity and community composition, with emphasis on nitrogen-enriched conditions

    Patricia M. Glibert;Frances P. Wilkerson;Richard C. Dugdale;John A. Raven;John A. Raven

  • Influence of diatom diversity on the ocean biological carbon pump

    Paul Tréguer;Chris Bowler;Brivaela Moriceau;Stephanie Dutkiewicz

  • Silicate regulation of new production in the equatorial Pacific upwelling

    Richard C. Dugdale;Frances P. Wilkerson

  • The role of a silicate pump in driving new production

    Richard C. Dugdale;Frances P. Wilkerson;Hans J. Minas

  • The use of 15N to measure nitrogen uptake in eutrophic oceans; experimental considerations1,2

    R. C. Dugdale;F. P. Wilkerson

  • The kinetics of nitrate and ammonia uptake by natural populations of marine phytoplankton

    J.J. MacIsaac;R.C. Dugdale

  • Interactions of light and inorganic nitrogen in controlling nitrogen uptake in the sea

    J.J. MacIsaac;R.C. Dugdale

  • One-dimensional ecosystem model of the equatorial Pacific upwelling system. Part I: model development and silicon and nitrogen cycle

    F. Chai;R.C. Dugdale;T.-H. Peng;F.P. Wilkerson

  • The role of ammonium and nitrate in spring bloom development in San Francisco Bay

    Richard C. Dugdale;Frances P. Wilkerson;Victoria E. Hogue;Albert Marchi

  • Nitrogen fixation in the Sargasso Sea

    R.C. Dugdale;David W. Menzel;John H. Ryther

  • Denitrification and hydrogen sulfide in the Peru upwelling region during 1976

    R.C. Dugdale;J.J. Goering;R.T. Barber;R.L. Smith

  • Primary production cycle in an upwelling center

    J.J. MacIsaac;R.C. Dugdale;R.T. Barber;D. Blasco

  • Nutrient sources and primary production in the Eastern Mediterranean

    R C Dugdale;F P Wilkerson

  • ESTIMATES OF IN SITU RATES OF NITROGEN UPTAKE BY TRICHODESMIUM SP. IN THE TROPICAL ATLANTIC OCEAN1

    John J. Goering;Richard C. Dugdale;David W. Menzel

  • Marine diatoms grown in chemostats under silicate or ammonium limitation. I. Cellular chemical composition and steady-state growth kinetics of Skeletonema costatum

    P. J. Harrison;P. J. Harrison;H. L. Conway;R. C. Dugdale

  • WEST: A northern California study of the role of wind-driven transport in the productivity of coastal plankton communities

    John Largier;Cathryn Lawrence;M. Roughan;D. M. Kaplan

  • HIGH NITROGEN FIXATION RATES IN THE SARGASSO SEA AND THE ARABIAN SEA1

    Richard C. Dugdale;John J. Goering;John H. Ryther

  • Nutrient regulation of phytoplankton productivity in Monterey Bay, California

    R.M. Kudela;R.C. Dugdale

  • Modeling new production in upwelling centers: A case study of modeling new production from remotely sensed temperature and color

    Richard C. Dugdale;André Morel;Annick Bricaud;Frances P. Wilkerson

Frequent Co-Authors

Frances P. Wilkerson
Frances P. Wilkerson San Francisco State University
Fei Chai
Fei Chai Ministry of Land and Resources of the People's Republic of China
Richard T. Barber
Richard T. Barber Duke University
Francisco P. Chavez
Francisco P. Chavez Monterey Bay Aquarium Research Institute
John J. Goering
John J. Goering University of Alaska Fairbanks
Tsung-Hung Peng
Tsung-Hung Peng Atlantic Oceanographic and Meteorological Laboratory
Peter G. Strutton
Peter G. Strutton University of Tasmania
James E. Cloern
James E. Cloern United States Geological Survey
Raphael M. Kudela
Raphael M. Kudela University of California, Santa Cruz
Yi Chao
Yi Chao University of California, Los Angeles

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