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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 54 2744 2503 1134 1008 171 9134

Karen H. Johannesson publications per year

The chart shows the history of publications by Karen H. Johannesson between 1970 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Karen H. Johannesson published across 56 years, from 1970 to 2025, averaging 3.6 papers a year. Output peaked at 15 publications in 2014. 15 of the 200 publications appeared in the last two years.

No. of publications
5 10 15
Bar chart. Horizontal axis: year, 1970 to 2025. Vertical axis: number of publications, 0 to 15. Peak 15 publications in 2014. 1970: 1 publication 1971: 0 publications 1972: 0 publications 1973: 0 publications 1974: 0 publications 1975: 0 publications 1976: 0 publications 1977: 0 publications 1978: 0 publications 1979: 0 publications 1980: 0 publications 1981: 0 publications 1982: 0 publications 1983: 0 publications 1984: 0 publications 1985: 0 publications 1986: 0 publications 1987: 0 publications 1988: 1 publication 1989: 0 publications 1990: 0 publications 1991: 0 publications 1992: 0 publications 1993: 0 publications 1994: 3 publications 1995: 4 publications 1996: 6 publications 1997: 3 publications 1998: 2 publications 1999: 5 publications 2000: 5 publications 2001: 1 publication 2002: 1 publication 2003: 4 publications 2004: 2 publications 2005: 8 publications 2006: 4 publications 2007: 7 publications 2008: 6 publications 2009: 4 publications 2010: 3 publications 2011: 6 publications 2012: 3 publications 2013: 9 publications 2014: 15 publications 2015: 5 publications 2016: 8 publications 2017: 15 publications 2018: 4 publications 2019: 6 publications 2020: 13 publications 2021: 7 publications 2022: 13 publications 2023: 11 publications 2024: 9 publications 2025: 6 publications
1970 2025

200 publications in total across all disciplines

View publications per year as a table
Karen H. Johannesson: publications per year, 1970 to 2025
Year Publications
1970 1
1971 0
1972 0
1973 0
1974 0
1975 0
1976 0
1977 0
1978 0
1979 0
1980 0
1981 0
1982 0
1983 0
1984 0
1985 0
1986 0
1987 0
1988 1
1989 0
1990 0
1991 0
1992 0
1993 0
1994 3
1995 4
1996 6
1997 3
1998 2
1999 5
2000 5
2001 1
2002 1
2003 4
2004 2
2005 8
2006 4
2007 7
2008 6
2009 4
2010 3
2011 6
2012 3
2013 9
2014 15
2015 5
2016 8
2017 15
2018 4
2019 6
2020 13
2021 7
2022 13
2023 11
2024 9
2025 6
Total 200
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Karen H. Johannesson 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 Karen H. Johannesson 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: 171 publications — 50th percentile

50% 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
168–177 490 171
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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Karen H. Johannesson 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 Karen H. Johannesson 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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Overview

Karen H. Johannesson is affiliated with the University of Massachusetts Boston in the United States. Their research primarily focuses on environmental science and earth and planetary sciences, with notable contributions across related subfields such as geochemistry and petrology, pollution, environmental chemistry, health, toxicology and mutagenesis, and inorganic chemistry.

Their work covers a range of topics central to understanding elemental and chemical processes in the environment, including geochemistry and elemental analysis, heavy metals in the environment, groundwater and isotope geochemistry, geology and paleoclimatology research, radioactive element chemistry and processing, arsenic contamination and mitigation, and aspects of paleontology and stratigraphy of fossils.

Johannesson has published frequently in several scientific venues. The most common publication venues include:

  • Applied Geochemistry
  • The Science of The Total Environment
  • Chemical Geology
  • Abstracts with programs - Geological Society of America
  • Chemosphere

Recent papers authored or coauthored by Johannesson demonstrate a focus on contaminants and biogeochemical cycling in aquatic and sedimentary environments. Representative publications include:

  • "Arsenic and other geogenic contaminants in global groundwater," 2024, Nature Reviews Earth & Environment
  • "Groundwater geochemistry, quality, and pollution of the largest lake basin in the Middle East: Comparison of PMF and PCA-MLR receptor models and application of the source-oriented HHRA approach," 2021, Chemosphere
  • "The Global Biogeochemical Cycle of the Rare Earth Elements," 2024, Global Biogeochemical Cycles
  • "Human-induced pollution and toxicity of river sediment by potentially toxic elements (PTEs) and accumulation in a paddy soil-rice system: A comprehensive watershed-scale assessment," 2022, Chemosphere
  • "Rare earth elements as tracers of sediment contamination by fertilizer industries in Southern Brazil, Patos Lagoon Estuary," 2021, Applied Geochemistry

Johannesson collaborates frequently with several coauthors, indicating a networked approach to research. Frequent collaborators include Lamine Boumaiza, Romain Chesnaux, Randy L. Stotler, Frédéric Huneau, and Christine Stumpp.

Best Publications

  • Rare earth elements (REE) and yttrium in stream waters, stream sediments, and Fe–Mn oxyhydroxides: Fractionation, speciation, and controls over REE + Y patterns in the surface environment

    Matthew I. Leybourne;Karen H. Johannesson

  • Speciation of rare earth elements in natural terrestrial waters: assessing the role of dissolved organic matter from the modeling approach

    Jianwu Tang;Karen H. Johannesson

  • Factor analytical approaches for evaluating groundwater trace element chemistry data

    I.M Farnham;K.H Johannesson;A.K Singh;V.F Hodge

  • Treatment of nondetects in multivariate analysis of groundwater geochemistry data

    Irene M Farnham;Ashok K Singh;Klaus J Stetzenbach;Kevin H Johannesson

  • RARE EARTH ELEMENTS AS GEOCHEMICAL TRACERS OF REGIONAL GROUNDWATER MIXING

    Kevin H. Johannesson;Klaus J. Stetzenbach;Vernon F. Hodge

  • Origin of middle rare earth element enrichments in acid waters of a Canadian high Arctic lake.

    Kevin H Johannesson;Xiaoping Zhou

  • Rare earth element concentrations and speciation in organic-rich blackwaters of the Great Dismal Swamp, Virginia, USA

    Karen H. Johannesson;Jianwu Tang;Jeanette M. Daniels;William J. Bounds

  • Rare earth element complexation behavior in circumneutral pH groundwaters: Assessing the role of carbonate and phosphate ions

    Kevin H. Johannesson;Klaus J. Stetzenbach;Vernon F. Hodge;W. Berry Lyons

  • The rare earth element geochemistry of Mono Lake water and the importance of carbonate complexing

    Kevin H. Johannesson;W. Berry Lyons

  • Geochemistry of the rare-earth elements in hypersaline and dilute acidic natural terrestrial waters: Complexation behavior and middle rare-earth element enrichments

    Kevin H. Johannesson;W.Berry Lyons;Mary A. Yelken;Henri E. Gaudette

  • Ligand extraction of rare earth elements from aquifer sediments: Implications for rare earth element complexation with organic matter in natural waters

    Jianwu Tang;Karen H. Johannesson

  • Rare-earth element geochemistry of Colour Lake, an acidic freshwater lake on Axel Heiberg Island, Northwest Territories, Canada

    Kevin H. Johannesson;W.Berry Lyons

  • Rare earth element fractionation and concentration variations along a groundwater flow path within a shallow, basin-fill aquifer, Southern Nevada, USA

    Kevin H. Johannesson;Irene M. Farnham;Caixia Guo;Klaus J. Stetzenbach

  • Do Archean chemical sediments record ancient seawater rare earth element patterns

    Karen H. Johannesson;Doyle L. Hawkins;Alejandra Cortés

  • Origin of rare earth element signatures in groundwaters of circumneutral pH from southern Nevada and eastern California, USA

    Kevin H Johannesson;Xiaoping Zhou;Caixia Guo;Klaus J Stetzenbach

  • Balancing the global oceanic neodymium budget: Evaluating the role of groundwater

    Karen H. Johannesson;David J. Burdige

  • Deciphering groundwater flow systems in Oasis Valley, Nevada, using trace element chemistry, multivariate statistics, and Geographical Information System

    Irene M. Farnham;Klaus J. Stetzenbach;Ashok K. Singh;Kevin H. Johannesson

  • The solubility control of rare earth elements in natural terrestrial waters and the significance of PO 4 3− and CO 3 2− in limiting dissolved rare earth concentrations: A review of recent information

    Kevin H. Johannesson;W. Berry Lyons;Klaus J. Stetzenbach;Robert H. Byrne

  • Rare earth element geochemistry of groundwaters from a thick till and clay-rich aquitard sequence, Saskatchewan, Canada

    Kevin H Johannesson;M.Jim Hendry

  • Groundwater geochemistry, quality, and pollution of the largest lake basin in the Middle East: Comparison of PMF and PCA-MLR receptor models and application of the source-oriented HHRA approach.

    Hamed Haghnazar;Karen H. Johannesson;Ricardo González-Pinzón;Mojtaba Pourakbar

  • Delineation of Ground-Water Flow Systems in the Southern Great Basin Using Aqueous Rare Earth Element Distributions

    Kevin H. Johannesson;Klaus J. Stetzenbach;Vernon F. Hodge;David K. Kreamer

Frequent Co-Authors

David J. Burdige
David J. Burdige Old Dominion University
W. Berry Lyons
W. Berry Lyons The Ohio State University
Prosun Bhattacharya
Prosun Bhattacharya Royal Institute of Technology
Peter W. Swarzenski
Peter W. Swarzenski International Atomic Energy Agency
Matthew I. Leybourne
Matthew I. Leybourne Queen's University
Jonathan B. Martin
Jonathan B. Martin University of Florida
Jochen Bundschuh
Jochen Bundschuh University of Southern Queensland
Marc Poujol
Marc Poujol University of Rennes
Abhijit Mukherjee
Abhijit Mukherjee Curtin University
George R. Helz
George R. Helz University of Maryland, College Park

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