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John W. Pohlman

John W. Pohlman

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D-Index & Metrics

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Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Environmental Sciences 38 8686 8334 3102 2884 124 5098

John W. Pohlman publications per year

The chart shows the history of publications by John W. Pohlman between 1997 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. John W. Pohlman published across 29 years, from 1997 to 2025, averaging 4.7 papers a year. Output peaked at 14 publications in 2008. 9 of the 135 publications appeared in the last two years.

No. of publications
5 10
Bar chart. Horizontal axis: year, 1997 to 2025. Vertical axis: number of publications, 0 to 14. Peak 14 publications in 2008. 1997: 1 publication 1998: 0 publications 1999: 0 publications 2000: 3 publications 2001: 1 publication 2002: 2 publications 2003: 0 publications 2004: 5 publications 2005: 5 publications 2006: 1 publication 2007: 6 publications 2008: 14 publications 2009: 9 publications 2010: 9 publications 2011: 8 publications 2012: 7 publications 2013: 3 publications 2014: 7 publications 2015: 14 publications 2016: 8 publications 2017: 4 publications 2018: 5 publications 2019: 2 publications 2020: 4 publications 2021: 3 publications 2022: 4 publications 2023: 1 publication 2024: 3 publications 2025: 6 publications
1997 2025

135 publications in total across all disciplines

View publications per year as a table
John W. Pohlman: publications per year, 1997 to 2025
Year Publications
1997 1
1998 0
1999 0
2000 3
2001 1
2002 2
2003 0
2004 5
2005 5
2006 1
2007 6
2008 14
2009 9
2010 9
2011 8
2012 7
2013 3
2014 7
2015 14
2016 8
2017 4
2018 5
2019 2
2020 4
2021 3
2022 4
2023 1
2024 3
2025 6
Total 135
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John W. Pohlman publications per year - data summary

  • John W. Pohlman, a Environmental Sciences scholar from United States Geological Survey, has 135 publications recorded across 29 years, from 1997 to 2025.
  • The oldest publication on record dates to 1997 and the most recent to 2025.
  • The most productive years are 2008 and 2015, with 14 publications each.
  • The least productive years with any output are 1997, 2001, 2006 and 2023, with 1 publication each.
  • 3 of the 29 years in the span carry no publications at all (1998, 1999 and 2003).
  • The rate of publication averages 4.7 papers per year over the whole span, or 5.2 per year counting only the 26 years with at least one publication.
  • The last 5 years on the chart (2021-2025) hold 17 publications, 13% of the career total.
  • Split into equal eras - 1997-2006: 18 publications (1.8 per year); 2007-2016: 85 publications (8.5 per year); 2017-2025: 32 publications (3.6 per year).
  • Comparing the opening and closing eras, the overall trend of publication is rising.

John W. Pohlman 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 John W. Pohlman sits on this spectrum.

No. of scientists
200 400 600
Bar chart with 66 bars. Horizontal axis: publications, 41–50 to 690+. Vertical axis: number of scientists, 0 to 617. Most scientists, 617, have 121–130 publications. The last bar groups every scientist with 690 publications or more. The highlighted bar, 121–130 publications, is where this scientist sits. 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: 282 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: 26 scientists 501–510 publications: 17 scientists 511–520 publications: 19 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 681–689 publications: 4 scientists 690+ publications: 100 scientists
41–50 publications 690+

This scientist: 124 publications — 26th percentile

26% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 690 publications or more.

View publications distribution as a table
Number of Environmental Sciences scientists by publication count, Research.com 2026 ranking edition. Based on 9,676 ranked scientists.
Publications Scientists This scientist
41–50 21
51–60 62
61–70 133
71–80 257
81–90 361
91–100 440
101–110 492
111–120 541
121–130 617 124
131–140 544
141–150 541
151–160 539
161–170 444
171–180 444
181–190 400
191–200 377
201–210 318
211–220 282
221–230 263
231–240 220
241–250 217
251–260 180
261–270 181
271–280 155
281–290 130
291–300 127
301–310 130
311–320 85
321–330 106
331–340 80
341–350 83
351–360 75
361–370 69
371–380 52
381–390 54
391–400 56
401–410 44
411–420 40
421–430 36
431–440 25
441–450 25
451–460 32
461–470 29
471–480 21
481–490 26
491–500 26
501–510 17
511–520 19
521–530 15
531–540 22
541–550 12
551–560 15
561–570 11
571–580 19
581–590 9
591–600 9
601–610 7
611–620 11
621–630 5
631–640 5
641–650 6
651–660 3
661–670 3
671–680 4
681–689 4
690+ 100
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John W. Pohlman publication distribution in Environmental Sciences in 2026 - data summary

  • The chart plots the publication count of all 9,676 Environmental Sciences scientists ranked by Research.com in 2026, grouped into 66 ranges running from 41–50 to 690+ publications.
  • John W. Pohlman, a Environmental Sciences scholar from United States Geological Survey, records 124 publications - the 26th percentile of the discipline.
  • 26% of ranked Environmental Sciences scientists score the same or lower than John W. Pohlman, and about 74% score higher.
  • The median of the discipline falls in the 161–170 publications range, and John W. Pohlman ranks below the median.
  • The most crowded range is 121–130 publications, holding 617 scientists (6% of the field).
  • 67% of the field sits in the lowest quarter of the value range (up to 201–210 publications), so the distribution is heavily right-skewed and high scores are rare.
  • The final bar has no upper bound: it groups every scientist with 690 publications or more, 100 scientists in all (1% of the field).

John W. Pohlman 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 John W. Pohlman sits on this spectrum.

No. of scientists
100 200 300
Bar chart with 97 bars. Horizontal axis: D-Index, 30 to 126+. Vertical axis: number of scientists, 0 to 348. Most scientists, 348, have 45 D-Index. The last bar groups every scientist with 126 D-Index or more. The highlighted bar, 38 D-Index, is where this scientist sits. 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: 198 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: 20 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: 9 scientists 126+ D-Index: 92 scientists
30 D-Index 126+

This scientist: 38 D-Index — 12th percentile

12% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 126 D-Index or more.

View D-Index distribution as a table
Number of Environmental Sciences scientists by D-index, Research.com 2026 ranking edition. Based on 9,676 ranked scientists.
D-Index Scientists This scientist
30 12
31 26
32 51
33 88
34 123
35 163
36 206
37 267
38 265 38
39 275
40 321
41 343
42 305
43 336
44 330
45 348
46 291
47 275
48 272
49 273
50 263
51 232
52 266
53 217
54 198
55 177
56 202
57 204
58 166
59 177
60 166
61 152
62 143
63 150
64 124
65 119
66 120
67 118
68 82
69 98
70 94
71 105
72 74
73 84
74 70
75 67
76 78
77 60
78 59
79 52
80 47
81 38
82 48
83 42
84 42
85 43
86 29
87 37
88 29
89 30
90 34
91 20
92 22
93 17
94 19
95 24
96 21
97 20
98 24
99 17
100 17
101 21
102 25
103 18
104 26
105 20
106 15
107 10
108 13
109 15
110 12
111 8
112 7
113 9
114 6
115 12
116 7
117 8
118 3
119 5
120 7
121 2
122 4
123 8
124 7
125 9
126+ 92
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John W. Pohlman D-index placement in Environmental Sciences in 2026 - data summary

  • The chart plots the discipline H-index (D-index) of all 9,676 Environmental Sciences scientists ranked by Research.com in 2026, grouped into 97 ranges running from 30 to 126+ D-Index.
  • John W. Pohlman, a Environmental Sciences scholar from United States Geological Survey, records 38 D-Index - the 12th percentile of the discipline.
  • 12% of ranked Environmental Sciences scientists score the same or lower than John W. Pohlman, and about 88% score higher.
  • The median of the discipline falls in the 51 D-Index range, and John W. Pohlman ranks below the median.
  • The most crowded range is 45 D-Index, holding 348 scientists (4% of the field).
  • 59% of the field sits in the lowest quarter of the value range (up to 54 D-Index), so the distribution is heavily right-skewed and high scores are rare.
  • The final bar has no upper bound: it groups every scientist with 126 D-Index or more, 92 scientists in all (<1% of the field).

Overview

John W. Pohlman is affiliated with the United States Geological Survey in the United States. Their research predominantly covers Earth and Planetary Sciences, with a focus on Environmental Science and several related subfields including Environmental Chemistry, Geophysics, Ocean Engineering, Oceanography, and Atmospheric Science.

The scientist has contributed extensively to topics such as Methane Hydrates and Related Phenomena, Seismic Imaging and Inversion Techniques, Reservoir Engineering and Simulation Methods, Geophysics and Gravity Measurements, Geology and Paleoclimatology Research, Atmospheric and Environmental Gas Dynamics, and Hydrocarbon Exploration and Reservoir Analysis.

Pohlman's publication record includes papers in a variety of journals and venues. Notable recent works include:

  • "Metabolic flexibility of aerobic methanotrophs under anoxic conditions in Arctic lake sediments," 2021, The ISME Journal
  • "Contribution of deep-sourced carbon from hydrocarbon seeps to sedimentary organic carbon: Evidence from radiocarbon and stable isotope geochemistry," 2021, Chemical Geology
  • "Discrete Sample Introduction Module for Quantitative and Isotopic Analysis of Methane and Other Gases by Cavity Ring-Down Spectroscopy," 2021, Environmental Science & Technology
  • "Methane oxidation dynamics in a karst subterranean estuary," 2020, Geochimica et Cosmochimica Acta
  • "Oxygenation of a karst subterranean estuary during a tropical cyclone: mechanisms and implications for the carbon cycle," 2022, Limnology and Oceanography

Pohlman has collaborated frequently with researchers including Michael Riedel, Timothy S. Collett, Mitchell J Malone, Gilles Guèrin, and Fumio Akiba. Their co-authorship records show significant recurring partnerships, each contributing to over twenty joint publications.

Their primary publication venues reflect diverse interests, with the largest number of publications hosted on Zenodo (CERN European Organization for Nuclear Research), followed by contributions to The ISME Journal, Chemical Geology, Environmental Science & Technology, and Geochimica et Cosmochimica Acta.

Best Publications

  • Complex gas hydrate from the Cascadia margin

    Hailong Lu;Yu-taek Seo;Jong-won Lee;Igor Moudrakovski

  • Nonequilibrium clumped isotope signals in microbial methane

    David T. Wang;David T. Wang;Danielle S. Gruen;Danielle S. Gruen;Barbara Sherwood Lollar;Kai-Uwe Hinrichs

  • Methane hydrate formation in turbidite sediments of northern Cascadia, IODP Expedition 311

    M.E. Torres;A.M. Tréhu;N. Cespedes;M. Kastner

  • Carbon isotope equilibration during sulphate-limited anaerobic oxidation of methane

    Marcos Yukio Yoshinaga;Thomas Holler;Tobias Goldhammer;Gunter Wegener

  • India National Gas Hydrate Program Expedition 02 Summary of Scientific Results: Gas hydrate systems along the eastern continental margin of India

    Timothy S. Collett;Ray Boswell;William F. Waite;Pushpendra Kumar

  • The stable carbon isotope biogeochemistry of acetate and other dissolved carbon species in deep subseafloor sediments at the northern Cascadia Margin

    Verena B. Heuer;John W. Pohlman;Marta E. Torres;Marcus Elvert

  • The effect of diagenesis and fluid migration on rare earth element distribution in pore fluids of the northern Cascadia accretionary margin

    Ji-Hoon Kim;Marta E. Torres;Brian A. Haley;Miriam Kastner

  • A simple headspace equilibration method for measuring dissolved methane

    Cédric Magen;Cédric Magen;Laura L. Lapham;John W. Pohlman;Kathleen Marshall

  • A stable isotope study of organic cycling and the ecology of an anchialine cave ecosystem

    Pohlman Jw;Iliffe Tm;Cifuentes La

  • Methane sources and production in the northern Cascadia margin gas hydrate system

    John Pohlman;Masanori Kaneko;Verena B. Heuer;Richard B. Coffin

  • The origin of thermogenic gas hydrates on the northern Cascadia Margin as inferred from isotopic (13C/12C and D/H) and molecular composition of hydrate and vent gas

    John W. Pohlman;John W. Pohlman;Elizabeth A. Canuel;N. Ross Chapman;George D. Spence

  • Methane hydrate-bearing seeps as a source of aged dissolved organic carbon to the oceans

    John W. Pohlman;James E. Bauer;William F. Waite;Christopher L. Osburn

  • Methane- and dissolved organic carbon-fueled microbial loop supports a tropical subterranean estuary ecosystem.

    David Brankovits;John W. Pohlman;John W. Pohlman;Helge Niemann;Mary Beth Leigh

  • Radiocarbon dating of a very large African baobab.

    Adrian Patrut;Karl F von Reden;Daniel A Lowy;Andries H Alberts

  • Shifts in Identity and Activity of Methanotrophs in Arctic Lake Sediments in Response to Temperature Changes

    Ruo He;Ruo He;Matthew J. Wooller;John W. Pohlman;John Quensen

  • Greenhouse gas emissions from diverse Arctic Alaskan lakes are dominated by young carbon

    Clayton D. Elder;Xiaomei Xu;Jennifer Walker;Jordan L. Schnell;Jordan L. Schnell

  • Diversity of active aerobic methanotrophs along depth profiles of arctic and subarctic lake water column and sediments.

    Ruo He;Matthew J Wooller;John W Pohlman;John Quensen

  • Rapid sea level rise and ice sheet response to 8,200-year climate event

    Thomas M. Cronin;P. R. Vogt;Debra A. Willard;Robert C. Thunell

  • Thermogenic gas hydrates in the northern Cascadia margin

    Ross Chapman;John Pohlman;Rick Coffin;Jeff Chanton

  • Assessing sulfate reduction and methane cycling in a high salinity pore water system in the northern Gulf of Mexico

    John W. Pohlman;Carolyn D. Ruppel;Deborah R. Hutchinson;R. Downer

Frequent Co-Authors

Richard B. Coffin
Richard B. Coffin Texas A&M University – Corpus Christi
Michael Riedel
Michael Riedel GEOMAR Helmholtz Centre for Ocean Research Kiel
Matthew J. Wooller
Matthew J. Wooller University of Alaska Fairbanks
Marta E Torres
Marta E Torres Oregon State University
Kai-Uwe Hinrichs
Kai-Uwe Hinrichs University of Bremen
Carolyn D. Ruppel
Carolyn D. Ruppel United States Geological Survey
Marcus Elvert
Marcus Elvert University of Bremen
Mary Beth Leigh
Mary Beth Leigh University of Alaska Fairbanks
Thomas M. Iliffe
Thomas M. Iliffe Texas A&M University at Galveston
Miriam Kastner
Miriam Kastner University of California, San Diego

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