World's Best Scientists 2026 revealed!
Geoffrey I. Sunahara

Geoffrey I. Sunahara

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Environmental Sciences 43 7218 6939 320 300 126 5701

Geoffrey I. Sunahara publications per year

The chart shows the history of publications by Geoffrey I. Sunahara between 1978 and 2026, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Geoffrey I. Sunahara published across 49 years, from 1978 to 2026, averaging 3.6 papers a year. Output peaked at 18 publications in 2024. 5 of the 174 publications appeared in the last two years.

No. of publications
5 10 15
Bar chart. Horizontal axis: year, 1978 to 2026. Vertical axis: number of publications, 0 to 18. Peak 18 publications in 2024. 1978: 1 publication 1979: 0 publications 1980: 1 publication 1981: 0 publications 1982: 0 publications 1983: 2 publications 1984: 1 publication 1985: 1 publication 1986: 0 publications 1987: 1 publication 1988: 0 publications 1989: 0 publications 1990: 1 publication 1991: 2 publications 1992: 1 publication 1993: 1 publication 1994: 2 publications 1995: 2 publications 1996: 0 publications 1997: 2 publications 1998: 3 publications 1999: 7 publications 2000: 8 publications 2001: 6 publications 2002: 6 publications 2003: 9 publications 2004: 8 publications 2005: 2 publications 2006: 6 publications 2007: 2 publications 2008: 3 publications 2009: 5 publications 2010: 2 publications 2011: 2 publications 2012: 5 publications 2013: 6 publications 2014: 4 publications 2015: 6 publications 2016: 1 publication 2017: 4 publications 2018: 2 publications 2019: 5 publications 2020: 8 publications 2021: 4 publications 2022: 7 publications 2023: 12 publications 2024: 18 publications 2025: 4 publications 2026: 1 publication
1978 2026

174 publications in total across all disciplines

View publications per year as a table
Geoffrey I. Sunahara: publications per year, 1978 to 2026
Year Publications
1978 1
1979 0
1980 1
1981 0
1982 0
1983 2
1984 1
1985 1
1986 0
1987 1
1988 0
1989 0
1990 1
1991 2
1992 1
1993 1
1994 2
1995 2
1996 0
1997 2
1998 3
1999 7
2000 8
2001 6
2002 6
2003 9
2004 8
2005 2
2006 6
2007 2
2008 3
2009 5
2010 2
2011 2
2012 5
2013 6
2014 4
2015 6
2016 1
2017 4
2018 2
2019 5
2020 8
2021 4
2022 7
2023 12
2024 18
2025 4
2026 1
Total 174
Download as CSV

Geoffrey I. Sunahara 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 Geoffrey I. Sunahara 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: 126 publications — 28th percentile

28% 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
121–130 617 126
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
Download as CSV

Geoffrey I. Sunahara 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 Geoffrey I. Sunahara 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, 43 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: 43 D-Index — 29th percentile

29% 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
39 275
40 321
41 343
42 305
43 336 43
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
Download as CSV

Overview

Geoffrey I. Sunahara is affiliated with McGill University in Canada and has an extensive publication record in the field of Environmental Science. Their research covers various subfields including Pollution, Environmental Chemistry, Plant Science, Health, Toxicology and Mutagenesis, and Biomedical Engineering.

Their work frequently appears in specialized venues, with multiple papers published in the following journals: Journal of Hazardous Materials, Journal of Environmental Management, The Science of The Total Environment, SSRN Electronic Journal, and Environmental Pollution.

Frequent coauthors of Geoffrey I. Sunahara include:

  • Robert Duran
  • Jun Yao
  • Hao Li
  • Jianli Liu
  • Houquan Liu

The scientist's research themes focus on heavy metals and related environmental issues. Main topics include:

  • Heavy metals in environment
  • Mine drainage and remediation techniques
  • Plant Stress Responses and Tolerance
  • Metal Extraction and Bioleaching
  • Arsenic contamination and mitigation
  • Chromium effects and bioremediation
  • Heavy Metals in Plants

Among recent scholarly contributions are the following papers:

  • Phytoextraction of cadmium-contaminated soil by Celosia argentea Linn.: A long-term field study, 2020, Environmental Pollution
  • Integrated transcriptome and metabolome analysis reveals the mechanism of tolerance to manganese and cadmium toxicity in the Mn/Cd hyperaccumulator Celosia argentea Linn, 2022, Journal of Hazardous Materials
  • New insights on the effect of non-ferrous metal mining and smelting activities on microbial activity characteristics and bacterial community structure, 2023, Journal of Hazardous Materials
  • Quantifying ecological and human health risks of metal(loid)s pollution from non-ferrous metal mining and smelting activities in Southwest China, 2023, The Science of The Total Environment
  • Comprehensive genomic and proteomic profiling reveal Acinetobacter johnsonii JH7 responses to Sb(III) toxicity, 2020, The Science of The Total Environment

Best Publications

  • An in-depth analysis of electric cell-substrate impedance sensing to study the attachment and spreading of mammalian cells.

    Caide Xiao;Bernard Lachance;Geoffrey Sunahara;John H T Luong

  • Cytotoxic and genotoxic effects of energetic compounds on bacterial and mammalian cells in vitro

    Bernard Lachance;Pierre Yves Robidoux;Jalal Hawari;Guy Ampleman

  • In vitro cytotoxicity and genotoxicity studies of titanium dioxide (TiO2) nanoparticles in Chinese hamster lung fibroblast cells.

    Mahsa Hamzeh;Geoffrey I. Sunahara

  • Chronic toxicity of energetic compounds in soil determined using the earthworm (Eisenia andrei) reproduction test

    Pierre Yves Robidoux;Claus Svendsen;Jean Caumartin;Jalal Hawari

  • Ecotoxicology of Explosives

    Geoffrey I. Sunahara;Guilherme Lotufo;Roman G. Kuperman;Jalal Hawari

  • Development of a soil extraction procedure for ecotoxicity characterization of energetic compounds.

    Geoffrey I. Sunahara;Sabine Dodard;Manon Sarrazin;Louise Paquet

  • Toxicity and bioaccumulation of reduced TNT metabolites in the earthworm Eisenia andrei exposed to amended forest soil.

    Bernard Lachance;Agnès Y. Renoux;Manon Sarrazin;Jalal Hawari

  • Ecotoxicological assessment of a high energetic and insensitive munitions compound: 2,4-Dinitroanisole (DNAN)

    Sabine G. Dodard;Manon Sarrazin;Jalal Hawari;Louise Paquet

  • Phytotoxicity and bioaccumulation of copper and chromium using barley (Hordeum vulgare L.) in spiked artificial and natural forest soils.

    Nadia Ait Ali;Mohammed Ater;Geoffrey I. Sunahara;Pierre Yves Robidoux

  • TNT, RDX, and HMX decrease earthworm (Eisenia andrei) life-cycle responses in a spiked natural forest soil.

    P. Y. Robidoux;J. Hawari;G. Bardai;L. Paquet

  • Ecotoxicity characterization of dinitrotoluenes and some of their reduced metabolites.

    S.G. Dodard;A.Y. Renoux;J. Hawari;G. Ampleman

  • Earthworm Sublethal Responses to Titanium Dioxide Nanomaterial in Soil Detected by 1H NMR Metabolomics

    Melissa L. Whitfield Åslund;Heather McShane;Myrna J. Simpson;André J. Simpson

  • Enhanced biodegradation of petroleum hydrocarbons in contaminated soil

    Laleh Yerushalmi;Sylvie Rocheleau;Ruxandra Cimpoia;Manon Sarrazin

  • Toxicity assessment of contaminated soils from an antitank firing range.

    Pierre Yves Robidoux;Ping Gong;Manon Sarrazin;Ghalib Bardai

  • Reproductive and behavioral responses of earthworms exposed to nano‐sized titanium dioxide in soil

    Heather McShane;Manon Sarrazin;Joann K. Whalen;William H. Hendershot

  • Acute and chronic toxicity of the new explosive CL-20 to the earthworm (Eisenia andrei) exposed to amended natural soils.

    Pierre Yves Robidoux;Geoffrey I. Sunahara;Kathleen Savard;Yann Berthelot

  • Integrated transcriptome and metabolome analysis reveals the mechanism of tolerance to manganese and cadmium toxicity in the Mn/Cd hyperaccumulator Celosia argentea Linn.

    Unknown

  • Acute toxicity of 2,4,6-trinitrotoluene in earthworm (Eisenia andrei).

    Pierre Yves Robidoux;Jalal Hawari;Sonia Thiboutot;Guy Ampleman

  • Effects and bioavailability of 2,4,6-trinitrotoluene in spiked and field-contaminated soils to indigenous microorganisms

    Ping Gong;Steven D. Siciliano;Charles W. Greer;Louise Paquet

  • Transformation of 2,4,6‐trinitrotoluene in soil in the presence of the earthworm Eisenia andrei

    Agnès Y. Renoux;Manon Sarrazin;Jalal Hawari;Geoffrey I. Sunahara

  • Phytotoxicity of 2,4,6-trinitrotoluene (TNT) and octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine (HMX) in spiked artificial and natural forest soils.

    P. Y. Robidoux;G. Bardai;L. Paquet;G. Ampleman

Frequent Co-Authors

Jalal Hawari
Jalal Hawari Polytechnique Montréal
Sonia Thiboutot
Sonia Thiboutot Defence Research and Development Canada
Guy Ampleman
Guy Ampleman Defence Research and Development Canada
Louise Paquet
Louise Paquet National Academies of Sciences, Engineering, and Medicine
Robert Duran
Robert Duran University of Pau and the Adour Region
Charles W. Greer
Charles W. Greer National Research Council Canada
Joann K. Whalen
Joann K. Whalen McGill University
Richard Martel
Richard Martel University of Montreal
William H. Hendershot
William H. Hendershot McGill University
Serge R. Guiot
Serge R. Guiot University of Montreal

If you think any of the details on this page are incorrect, let us know.

Report an issue

We appreciate your kind effort to assist us to improve this page, it would be helpful providing us with as much detail as possible in the text box below:

Related Online Degrees & Career Pathways

For those interested in expanding their knowledge beyond Environmental Sciences, pursuing an accredited affordable online general studies degree can provide a flexible foundation. These programs allow students to customize their coursework while maintaining affordability and accreditation, making them ideal for balancing studies with other commitments.

Students seeking a smoother academic journey might consider one of the easiest bachelor degrees to get. While “easy” varies by individual, these programs often emphasize practical skills and offer engaging content, helping learners complete their degrees successfully and on time.

Specialized careers in Environmental Sciences frequently intersect with fields like geology. Earning a geologist degree online equips students with essential knowledge about earth processes, making it a solid pathway for those interested in natural resource management, conservation, or environmental consulting.

Another promising direction is the study of spatial data through Geographic Information Systems (GIS). The best GIS undergraduate programs prepare students with cutting-edge skills in mapping and data analysis, crucial for addressing environmental challenges and supporting sustainable decision-making.

Best Scientists Citing Geoffrey I. Sunahara

Trending Scientists

Recently Published Articles