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

David A. Walsh

D-Index & Metrics

Environmental Sciences

D-Index
46
Citations
8478
World Ranking
6054
National Ranking
260

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.

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: 283 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: 25 scientists 501–510 publications: 17 scientists 511–520 publications: 18 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 681–686 publications: 3 scientists 687+ publications: 100 scientists
41 publications 687+

This scientist: 108 publications — 17th percentile

17% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 687 publications or more.

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.

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: 199 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: 19 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: 99 scientists
30 D-Index 125+

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 125 D-Index or more.

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

  • Lake Sedimentary DNA Research on Past Terrestrial and Aquatic Biodiversity : Overview and Recommendations

    Eric Capo;Charline Giguet-Covex;Alexandra Rouillard;Kevin Nota

  • 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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