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 51 3198 2921 1283 1139 140 10247

John P. Ryan publications per year

The chart shows the history of publications by John P. Ryan between 1990 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. John P. Ryan published across 36 years, from 1990 to 2025, averaging 5.5 papers a year. Output peaked at 15 publications in 2012. 16 of the 198 publications appeared in the last two years.

No. of publications
5 10 15
Bar chart. Horizontal axis: year, 1990 to 2025. Vertical axis: number of publications, 0 to 15. Peak 15 publications in 2012. 1990: 1 publication 1991: 0 publications 1992: 1 publication 1993: 1 publication 1994: 0 publications 1995: 0 publications 1996: 1 publication 1997: 1 publication 1998: 0 publications 1999: 2 publications 2000: 2 publications 2001: 6 publications 2002: 3 publications 2003: 5 publications 2004: 1 publication 2005: 4 publications 2006: 3 publications 2007: 4 publications 2008: 6 publications 2009: 8 publications 2010: 11 publications 2011: 10 publications 2012: 15 publications 2013: 6 publications 2014: 9 publications 2015: 11 publications 2016: 11 publications 2017: 7 publications 2018: 9 publications 2019: 8 publications 2020: 9 publications 2021: 10 publications 2022: 8 publications 2023: 9 publications 2024: 9 publications 2025: 7 publications
1990 2025

198 publications in total across all disciplines

View publications per year as a table
John P. Ryan: publications per year, 1990 to 2025
Year Publications
1990 1
1991 0
1992 1
1993 1
1994 0
1995 0
1996 1
1997 1
1998 0
1999 2
2000 2
2001 6
2002 3
2003 5
2004 1
2005 4
2006 3
2007 4
2008 6
2009 8
2010 11
2011 10
2012 15
2013 6
2014 9
2015 11
2016 11
2017 7
2018 9
2019 8
2020 9
2021 10
2022 8
2023 9
2024 9
2025 7
Total 198
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John P. Ryan 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 John P. Ryan 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, 138–147 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: 140 publications — 33rd percentile

33% 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
138–147 491 140
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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John P. Ryan 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 John P. Ryan 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, 51 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: 51 D-Index — 66th percentile

66% 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 51
52 182
53 178
54 163
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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Overview

John P. Ryan is affiliated with the Monterey Bay Aquarium Research Institute in the United States. Their research primarily spans the fields of Environmental Science and Earth and Planetary Sciences, with significant contributions to subfields such as Oceanography, Ecology, Developmental Biology, Global and Planetary Change, and Atmospheric Science.

The scientist's work extensively covers a range of topics including:

  • Marine animal studies overview
  • Underwater Acoustics Research
  • Animal Vocal Communication and Behavior
  • Marine and fisheries research
  • Marine and coastal ecosystems
  • Marine and coastal plant biology
  • Microbial Community Ecology and Physiology

John P. Ryan has contributed to multiple scholarly articles, with notable recent publications including:

  • "A system of coordinated autonomous robots for Lagrangian studies of microbes in the oceanic deep chlorophyll maximum" (2021) published in Science Robotics
  • "Animal-Borne Metrics Enable Acoustic Detection of Blue Whale Migration" (2020) published in Current Biology
  • "Reduction of Low-Frequency Vessel Noise in Monterey Bay National Marine Sanctuary During the COVID-19 Pandemic" (2021) published in Frontiers in Marine Science
  • "Acoustic signature reveals blue whales tune life-history transitions to oceanographic conditions" (2022) published in Functional Ecology
  • "Oceanic giants dance to atmospheric rhythms: Ephemeral wind-driven resource tracking by blue whales" (2022) published in Ecology Letters

The scientist frequently publishes in venues such as The Journal of the Acoustical Society of America, Frontiers in Marine Science, bioRxiv (Cold Spring Harbor Laboratory), Frontiers in Remote Sensing, and Marine Ecology Progress Series.

Collaborations are a significant component of their work. Frequent co-authors include:

  • William K. Oestreich
  • John E. Joseph
  • Tetyana Margolina
  • Yanwu Zhang
  • Jeremy A. Goldbogen

Best Publications

  • From anchovies to sardines and back: multidecadal change in the Pacific Ocean.

    Francisco P. Chavez;John Ryan;Salvador E. Lluch-Cota;C Miguel Ñiquen

  • A comparison of global estimates of marine primary production from ocean color

    Mary-Elena Carr;Marjorie A. M. Friedrichs;Marjorie A. M. Friedrichs;Marjorie Schmeltz;Maki Noguchi Aita

  • Coastal zone color scanner pigment concentrations in the Southern Ocean and relationships to geophysical surface features

    J. C. Comiso;C. R. McClain;C. W. Sullivan;J. P. Ryan

  • Biological and chemical consequences of the 1997–1998 El Niño in central California waters

    F.P Chavez;J.T Pennington;C.G Castro;C.G Castro;J.P Ryan

  • Comparison of algorithms for estimating ocean primary production from surface chlorophyll, temperature, and irradiance

    Janet Campbell;David Antoine;Robert Armstrong;Kevin Arrigo

  • Mass stranding of marine birds caused by a surfactant-producing red tide.

    David A. Jessup;Melissa A. Miller;John P. Ryan;Hannah M. Nevins;Hannah M. Nevins

  • Pattern and synchrony of gene expression among sympatric marine microbial populations

    Elizabeth Ottesen;Curtis Robert Young Iii;John Marmaduke Eppley;John P. Ryan

  • Red and black tides: Quantitative analysis of water-leaving radiance and perceived color for phytoplankton, colored dissolved organic matter, and suspended sediments

    Heidi M. Dierssen;Raphael M. Kudela;John P. Ryan;Richard C. Zimmerman

  • Linking the physiology and ecology of Cochlodinium to better understand harmful algal bloom events: A comparative approach

    Raphael M. Kudela;John P. Ryan;Melissa D. Blakely;Jenny Q. Lane

  • Causality of an extreme harmful algal bloom in Monterey Bay, California, during the 2014-2016 northeast Pacific warm anomaly

    J. P. Ryan;R. M. Kudela;J. M. Birch;M. Blum

  • Influences of upwelling and downwelling winds on red tide bloom dynamics in Monterey Bay, California

    John P. Ryan;Andrew M. Fischer;Raphael M. Kudela;James F.R. Gower

  • Metatranscriptomic analysis of autonomously collected and preserved marine bacterioplankton

    Elizabeth Ottesen;Roman Marin;Christina M. Preston;Curtis Robert Young

  • Physical-biological coupling in Monterey Bay, California: topographic influences on phytoplankton ecology

    John P. Ryan;Francisco P. Chavez;James G. Bellingham

  • Data-driven robotic sampling for marine ecosystem monitoring

    Jnaneshwar Das;Fr;ric Py

  • Interacting physical, chemical and biological forcing of phytoplankton thin-layer variability in Monterey Bay, California

    John P. Ryan;Margaret A. McManus;James M. Sullivan

  • In-situ Autonomous Acquisition and Preservation of Marine Environmental DNA Using an Autonomous Underwater Vehicle

    Kevan M. Yamahara;Christina M. Preston;James Birch;Kristine Walz

  • Application of the hyperspectral imager for the coastal ocean to phytoplankton ecology studies in Monterey Bay, CA, USA

    John P. Ryan;Curtiss O. Davis;Nicholas B. Tufillaro;Raphael M. Kudela

  • A coastal ocean extreme bloom incubator

    John P. Ryan;James F. R. Gower;Stephanie A. King;W. Paul Bissett

  • Phytoplankton thin layers caused by shear in frontal zones of a coastal upwelling system

    J. P. Ryan;M. A. McManus;J. D. Paduan;F. P. Chavez

  • Enhanced chlorophyll at the shelfbreak of the Mid-Atlantic Bight, and Georges Bank during the spring transition

    John P. Ryan;James A. Yoder;Peter C. Cornillon

  • Western Pacific modulation of large phytoplankton blooms in the central and eastern equatorial Pacific

    John P. Ryan;Iwao Ueki;Yi Chao;Hongchun Zhang;Hongchun Zhang

  • Unusual large-scale phytoplankton blooms in the equatorial Pacific

    John P Ryan;Paulo S Polito;Peter G Strutton;Francisco P Chavez

Frequent Co-Authors

Francisco P. Chavez
Francisco P. Chavez Monterey Bay Aquarium Research Institute
Raphael M. Kudela
Raphael M. Kudela University of California, Santa Cruz
Margaret A. McManus
Margaret A. McManus University of Hawaii at Manoa
Gaurav S. Sukhatme
Gaurav S. Sukhatme University of Southern California
James A. Yoder
James A. Yoder University of Rhode Island
Kelly J. Benoit-Bird
Kelly J. Benoit-Bird Monterey Bay Aquarium Research Institute
James M. Sullivan
James M. Sullivan Harbor Branch Oceanographic Institute
David M. Karl
David M. Karl University of Hawaii at Manoa
Jonathan P. Zehr
Jonathan P. Zehr University of California, Santa Cruz
Edward F. DeLong
Edward F. DeLong University of Hawaii at Manoa

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