World's Best Scientists 2026 revealed!
David A. Walsh

David A. Walsh

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Environmental Sciences 46 6056 5811 260 246 108 8478

David A. Walsh publications per year

The chart shows the history of publications by David A. Walsh between 1986 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. David A. Walsh published across 40 years, from 1986 to 2025, averaging 3.5 papers a year. Output peaked at 12 publications in 2022. 10 of the 138 publications appeared in the last two years.

No. of publications
5 10
Bar chart. Horizontal axis: year, 1986 to 2025. Vertical axis: number of publications, 0 to 12. Peak 12 publications in 2022. 1986: 1 publication 1987: 0 publications 1988: 0 publications 1989: 1 publication 1990: 0 publications 1991: 0 publications 1992: 0 publications 1993: 0 publications 1994: 0 publications 1995: 3 publications 1996: 2 publications 1997: 1 publication 1998: 1 publication 1999: 0 publications 2000: 1 publication 2001: 1 publication 2002: 5 publications 2003: 6 publications 2004: 3 publications 2005: 6 publications 2006: 3 publications 2007: 5 publications 2008: 1 publication 2009: 9 publications 2010: 2 publications 2011: 4 publications 2012: 1 publication 2013: 3 publications 2014: 2 publications 2015: 6 publications 2016: 0 publications 2017: 4 publications 2018: 5 publications 2019: 11 publications 2020: 9 publications 2021: 10 publications 2022: 12 publications 2023: 10 publications 2024: 5 publications 2025: 5 publications
1986 2025

138 publications in total across all disciplines

View publications per year as a table
David A. Walsh: publications per year, 1986 to 2025
Year Publications
1986 1
1987 0
1988 0
1989 1
1990 0
1991 0
1992 0
1993 0
1994 0
1995 3
1996 2
1997 1
1998 1
1999 0
2000 1
2001 1
2002 5
2003 6
2004 3
2005 6
2006 3
2007 5
2008 1
2009 9
2010 2
2011 4
2012 1
2013 3
2014 2
2015 6
2016 0
2017 4
2018 5
2019 11
2020 9
2021 10
2022 12
2023 10
2024 5
2025 5
Total 138
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David A. Walsh 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 David A. Walsh 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, 101–110 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: 108 publications — 17th percentile

17% 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
101–110 492 108
111–120 541
121–130 617
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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David A. Walsh 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 David A. Walsh 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, 46 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: 46 D-Index — 39th percentile

39% 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
44 330
45 348
46 291 46
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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Overview

David A. Walsh is affiliated with Concordia University in Canada. Their research primarily focuses on Environmental Science, with substantial contributions to Biochemistry, Genetics and Molecular Biology. Within these broad fields, they concentrate on several subfields including Ecology, Molecular Biology, Health, Toxicology and Mutagenesis, Environmental Chemistry, and Oceanography.

The scientist's work spans multiple specialized topics. Key areas of research include Microbial Community Ecology and Physiology, Environmental DNA in Biodiversity Studies, Genomics and Phylogenetic Studies, Protist Diversity and Phylogeny, Methane Hydrates and Related Phenomena, Mercury Impact and Mitigation Studies, and Bacteriophages and Microbial Interactions.

David A. Walsh has published numerous papers in various reputable venues. Frequent publication outlets include:

  • bioRxiv (Cold Spring Harbor Laboratory)
  • Zenodo (CERN European Organization for Nuclear Research)
  • mSphere
  • Environmental Microbiology
  • Nature Microbiology

Some of their recent scientific papers are:

  • "Giant virus diversity and host interactions through global metagenomics", 2020, published in Nature
  • "Expansion of the global RNA virome reveals diverse clades of bacteriophages", 2022, published in Cell
  • "Lake Sedimentary DNA Research on Past Terrestrial and Aquatic Biodiversity: Overview and Recommendations", 2021, published in Quaternary
  • "Ecology of inorganic sulfur auxiliary metabolism in widespread bacteriophages", 2021, published in Nature Communications
  • "A large-scale assessment of lakes reveals a pervasive signal of land use on bacterial communities", 2020, published in The ISME Journal

Frequent collaborators include Susanne A. Kraemer, Rebecca E. Garner, Irene Gregory-Eaves, Vera E. Onana, and Yannick Huot. These coauthors have contributed collectively across various research projects, indicating established professional partnerships.

Best Publications

  • Lateral gene transfer and the origins of prokaryotic groups.

    Boucher Y;Douady Cj;Papke Rt;Walsh Da

  • One More Step Toward a Warmer Arctic

    Igor V. Polyakov;Agnieszka Beszczynska;Eddy C. Carmack;Igor A. Dmitrenko

  • Metagenome of a Versatile Chemolithoautotroph from Expanding Oceanic Dead Zones

    David A. Walsh;Elena Zaikova;Charles G. Howes;Young C. Song

  • Variability and Trends of Air Temperature and Pressure in the Maritime Arctic, 1875–2000

    Igor V. Polyakov;Roman V. Bekryaev;Roman V. Bekryaev;Genrikh V. Alekseev;Uma S. Bhatt

  • The genome of Salinibacter ruber: Convergence and gene exchange among hyperhalophilic bacteria and archaea

    E. F. Mongodin;K. E. Nelson;S. Daugherty;R. T. DeBoy

  • Giant virus diversity and host interactions through global metagenomics

    Frederik Schulz;Simon Roux;David Paez-Espino;Sean Jungbluth

  • Observationally based assessment of polar amplification of global warming

    Igor V. Polyakov;Genrikh V. Alekseev;Roman V. Bekryaev;Uma Bhatt

  • Mapping climatological seasonal variations of surface currents in the tropical Atlantic using ship drifts

    Philip L. Richardson;David Walsh

  • Variability of the Intermediate Atlantic Water of the Arctic Ocean over the Last 100 Years

    I. V. Polyakov;G. V. Alekseev;L. A. Timokhov;U. S. Bhatt

  • Tracking Three Meddies with SOFAR Floats

    P. L. Richardson;D. Walsh;L. Armi;Michael Schröder

  • Microbial community dynamics in a seasonally anoxic fjord: Saanich Inlet, British Columbia.

    Elena Zaikova;David A. Walsh;Claire P. Stilwell;William W. Mohn

  • Ecology of inorganic sulfur auxiliary metabolism in widespread bacteriophages.

    Kristopher Kieft;Zhichao Zhou;Rika E. Anderson;Alison Buchan

  • Long-Term Ice Variability in Arctic Marginal Seas

    Igor V. Polyakov;Genrikh V. Alekseev;Roman V. Bekryaev;Roman V. Bekryaev;Uma S. Bhatt

  • Author Correction: A compendium of geochemical information from the Saanich Inlet water column

    Mónica Torres-Beltrán;Alyse K. Hawley;David Capelle;Elena Zaikova

  • Toward a warmer Arctic Ocean: Spreading of the early 21st century Atlantic Water warm anomaly along the Eurasian Basin margins

    Igor A. Dmitrenko;Igor A. Dmitrenko;Igor V. Polyakov;Sergey A. Kirillov;Leonid A. Timokhov

  • Linking metagenomics to aquatic microbial ecology and biogeochemical cycles

    Hans‐Peter Grossart;Hans‐Peter Grossart;Ramon Massana;Katherine D. McMahon;David A. Walsh

  • Archaeal diversity along a soil salinity gradient prone to disturbance

    David A. Walsh;R. Thane Papke;W. Ford Doolittle

  • Variations in Apparent Mixing Efficiency in the North Atlantic Central Water

    Barry Ruddick;David Walsh;Neil Oakey

  • Metaproteomic analysis of a winter to spring succession in coastal northwest Atlantic Ocean microbial plankton

    Anna A Georges;Heba El-Swais;Susanne E Craig;William K W Li

  • Towards a warmer Arctic Ocean: Spreading of the early 21st century Atlantic water warmer anomaly along the Eurasian Basin margins

    Igor Dmitrenko;I. V. Polaykov;Sergey A. Kirillov;Leonid A. Timokhov

Frequent Co-Authors

Igor V. Polyakov
Igor V. Polyakov University of Alaska Fairbanks
Steven J. Hallam
Steven J. Hallam University of British Columbia
Uma S. Bhatt
Uma S. Bhatt University of Alaska Fairbanks
Harper L. Simmons
Harper L. Simmons University of Alaska Fairbanks
Hans-Peter Grossart
Hans-Peter Grossart University of Potsdam
Eddy C. Carmack
Eddy C. Carmack Fisheries and Oceans Canada
W. Ford Doolittle
W. Ford Doolittle Dalhousie University
Irene Gregory-Eaves
Irene Gregory-Eaves McGill University
John Walsh
John Walsh University of Alaska Fairbanks
Eric Bapteste
Eric Bapteste Sorbonne University

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