World's Best Scientists 2026 revealed!
James D. Thomson

James D. Thomson

D-Index & Metrics

Ecology and Evolution

D-Index
82
Citations
19993
World Ranking
761
National Ranking
45

James D. Thomson publication distribution in Ecology and Evolution in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Ecology and Evolution in 2026. The highlighted bar marks where James D. Thomson sits on this spectrum.

37–41 publications: 2 scientists 42–46 publications: 9 scientists 47–51 publications: 10 scientists 52–56 publications: 31 scientists 57–61 publications: 56 scientists 62–66 publications: 91 scientists 67–71 publications: 92 scientists 72–76 publications: 127 scientists 77–81 publications: 173 scientists 82–86 publications: 236 scientists 87–91 publications: 227 scientists 92–96 publications: 240 scientists 97–101 publications: 333 scientists 102–106 publications: 280 scientists 107–111 publications: 300 scientists 112–116 publications: 285 scientists 117–121 publications: 305 scientists 122–126 publications: 287 scientists 127–131 publications: 278 scientists 132–136 publications: 289 scientists 137–141 publications: 273 scientists 142–146 publications: 262 scientists 147–151 publications: 246 scientists 152–156 publications: 235 scientists 157–161 publications: 205 scientists 162–166 publications: 199 scientists 167–171 publications: 174 scientists 172–176 publications: 164 scientists 177–181 publications: 173 scientists 182–186 publications: 189 scientists 187–191 publications: 170 scientists 192–196 publications: 139 scientists 197–201 publications: 128 scientists 202–206 publications: 117 scientists 207–211 publications: 115 scientists 212–216 publications: 107 scientists 217–221 publications: 124 scientists 222–226 publications: 81 scientists 227–231 publications: 82 scientists 232–236 publications: 85 scientists 237–241 publications: 75 scientists 242–246 publications: 66 scientists 247–251 publications: 81 scientists 252–256 publications: 69 scientists 257–261 publications: 70 scientists 262–266 publications: 55 scientists 267–271 publications: 64 scientists 272–276 publications: 49 scientists 277–281 publications: 48 scientists 282–286 publications: 44 scientists 287–291 publications: 45 scientists 292–296 publications: 36 scientists 297–301 publications: 39 scientists 302–306 publications: 38 scientists 307–311 publications: 30 scientists 312–316 publications: 34 scientists 317–321 publications: 25 scientists 322–326 publications: 22 scientists 327–331 publications: 28 scientists 332–336 publications: 30 scientists 337–341 publications: 22 scientists 342–346 publications: 30 scientists 347–351 publications: 26 scientists 352–356 publications: 22 scientists 357–361 publications: 29 scientists 362–366 publications: 21 scientists 367–371 publications: 12 scientists 372–376 publications: 18 scientists 377–381 publications: 17 scientists 382–386 publications: 13 scientists 387–391 publications: 21 scientists 392–396 publications: 13 scientists 397–401 publications: 10 scientists 402–406 publications: 15 scientists 407–411 publications: 8 scientists 412–416 publications: 9 scientists 417–421 publications: 8 scientists 422–426 publications: 4 scientists 427–431 publications: 10 scientists 432–436 publications: 10 scientists 437–441 publications: 5 scientists 442–446 publications: 4 scientists 447–451 publications: 10 scientists 452–456 publications: 2 scientists 457–461 publications: 4 scientists 462–466 publications: 7 scientists 467–471 publications: 7 scientists 472–476 publications: 6 scientists 477–481 publications: 6 scientists 482–486 publications: 3 scientists 487–491 publications: 3 scientists 492–496 publications: 4 scientists 497–501 publications: 4 scientists 502–506 publications: 8 scientists 507–511 publications: 5 scientists 512–516 publications: 4 scientists 517–521 publications: 5 scientists 522–526 publications: 4 scientists 527–530 publications: 5 scientists 531+ publications: 100 scientists
37 publications 531+

This scientist: 172 publications — 63rd percentile

63% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 531 publications or more.

James D. Thomson D-index placement in Ecology and Evolution in 2026

The chart shows the D-index (discipline H-index) distribution of Ecology and Evolution scientists ranked by Research.com in 2026. The highlighted bar marks where James D. Thomson sits on this spectrum.

30 D-Index: 95 scientists 31 D-Index: 123 scientists 32 D-Index: 191 scientists 33 D-Index: 245 scientists 34 D-Index: 252 scientists 35 D-Index: 244 scientists 36 D-Index: 249 scientists 37 D-Index: 244 scientists 38 D-Index: 254 scientists 39 D-Index: 254 scientists 40 D-Index: 280 scientists 41 D-Index: 274 scientists 42 D-Index: 266 scientists 43 D-Index: 233 scientists 44 D-Index: 248 scientists 45 D-Index: 208 scientists 46 D-Index: 201 scientists 47 D-Index: 213 scientists 48 D-Index: 207 scientists 49 D-Index: 172 scientists 50 D-Index: 209 scientists 51 D-Index: 199 scientists 52 D-Index: 153 scientists 53 D-Index: 169 scientists 54 D-Index: 163 scientists 55 D-Index: 148 scientists 56 D-Index: 120 scientists 57 D-Index: 146 scientists 58 D-Index: 137 scientists 59 D-Index: 140 scientists 60 D-Index: 104 scientists 61 D-Index: 119 scientists 62 D-Index: 118 scientists 63 D-Index: 99 scientists 64 D-Index: 77 scientists 65 D-Index: 100 scientists 66 D-Index: 86 scientists 67 D-Index: 83 scientists 68 D-Index: 75 scientists 69 D-Index: 94 scientists 70 D-Index: 57 scientists 71 D-Index: 68 scientists 72 D-Index: 59 scientists 73 D-Index: 63 scientists 74 D-Index: 66 scientists 75 D-Index: 60 scientists 76 D-Index: 42 scientists 77 D-Index: 49 scientists 78 D-Index: 39 scientists 79 D-Index: 37 scientists 80 D-Index: 43 scientists 81 D-Index: 41 scientists 82 D-Index: 45 scientists 83 D-Index: 34 scientists 84 D-Index: 40 scientists 85 D-Index: 35 scientists 86 D-Index: 55 scientists 87 D-Index: 24 scientists 88 D-Index: 24 scientists 89 D-Index: 30 scientists 90 D-Index: 23 scientists 91 D-Index: 25 scientists 92 D-Index: 27 scientists 93 D-Index: 27 scientists 94 D-Index: 13 scientists 95 D-Index: 23 scientists 96 D-Index: 12 scientists 97 D-Index: 14 scientists 98 D-Index: 19 scientists 99 D-Index: 16 scientists 100 D-Index: 14 scientists 101 D-Index: 5 scientists 102 D-Index: 21 scientists 103 D-Index: 16 scientists 104 D-Index: 10 scientists 105 D-Index: 7 scientists 106 D-Index: 7 scientists 107 D-Index: 7 scientists 108 D-Index: 6 scientists 109 D-Index: 9 scientists 110 D-Index: 11 scientists 111 D-Index: 12 scientists 112 D-Index: 9 scientists 113 D-Index: 7 scientists 114 D-Index: 3 scientists 115 D-Index: 8 scientists 116 D-Index: 5 scientists 117 D-Index: 11 scientists 118 D-Index: 4 scientists 119 D-Index: 2 scientists 120 D-Index: 5 scientists 121+ D-Index: 100 scientists
30 D-Index 121+

This scientist: 82 D-Index — 91st percentile

91% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 121 D-Index or more.

Research.com Recognitions

  • 2011 - Fellow of the Royal Society of Canada Academy of Science

Overview

James D. Thomson is affiliated with the University of Toronto in Canada. Their research work spans multiple interconnected fields with a focus on Agricultural and Biological Sciences, supported by eight publications. Additional contributions are found within Biochemistry, Genetics and Molecular Biology, encompassing three publications.

Their work is further specialized into subfields such as Ecology, Evolution, Behavior and Systematics, Insect Science, Genetics, Plant Science, and Nature and Landscape Conservation. This multidisciplinary approach reflects in the main topics of their research, which include:

  • Plant and animal studies
  • Insect and Pesticide Research
  • Insect and Arachnid Ecology and Behavior
  • Plant Parasitism and Resistance
  • Ecology and Vegetation Dynamics Studies
  • Plant Reproductive Biology

James D. Thomson has contributed to several notable publication venues, with repeated publications in the Journal of Pollination Ecology. Other venues include Biological Reviews of the Cambridge Philosophical Society and Ecological Applications. Their recent publications include:

  • "Trade-off mitigation: a conceptual framework for understanding floral adaptation in multispecies interactions," 2021, Biological Reviews of the Cambridge Philosophical Society
  • "Pollen carryover, pollinator movement, and spatial context impact the delivery of pollination services in apple orchards," 2023, Ecological Applications
  • "Editorial: How worthwhile are pollination networks?" 2021, Journal of Pollination Ecology
  • "How should we think about the pollination crisis?" 2025, Journal of Pollination Ecology

Frequent collaborators include Kazuharu Ohashi, Andreas Jürgens, Keng-Lou James Hung, Sophia Fan, and Caroline G. Strang. These partnerships highlight interdisciplinary exchanges within the research community.

Recognition of James D. Thomson's contributions includes being awarded the Fellow of the Royal Society of Canada in 2011 by the Academy of Science.

Best Publications

  • Pollination Syndromes and Floral Specialization

    Charles B. Fenster;W. Scott Armbruster;Paul Wilson;Michele R. Dudash

  • Flower Constancy, Insect Psychology, and Plant Evolution

    Lars Chittka;James D. Thomson;Nickolas M. Waser

  • EVOLUTIONARY OPTIONS FOR MAXIMIZING POLLEN DISPERSAL OF ANIMAL-POLLINATED PLANTS

    Lawrence D. Harder;James D. Thomson

  • Untangling Multiple Factors in Spatial Distributions: Lilies, Gophers, and Rocks

    James D. Thomson;James D. Thomson;George Weiblen;Barbara A. Thomson;Satie Alfaro

  • Plight of the bumble bee: Pathogen spillover from commercial to wild populations

    Sheila R. Colla;Michael C. Otterstatter;Robert J. Gegear;James D. Thomson

  • Pollen carryover, nectar rewards, and pollinator behavior with special reference to Diervilla lonicera.

    James D. Thomson;R. C. Plowright

  • Heterogeneity Among Floral Visitors Leads to Discordance Between Removal and Deposition of Pollen

    Paul Siri Wilson;James D. Thomson

  • Pollen Transport and Deposition by Bumble Bees in Erythronium: Influences of Floral Nectar and Bee Grooming

    James D. Thomson

  • An examination of synchrony between insect emergence and flowering in Rocky Mountain meadows

    Jessica R. K. Forrest;James D. Thomson

  • Pollen removal and deposition by honeybee and bumblebee visitors to apple and almond flowers

    James D. Thomson;Karen Goodell

  • ‘Anti-bee’ and ‘pro-bird’ changes during the evolution of hummingbird pollination in Penstemon flowers

    M. C. Castellanos;M. C. Castellanos;P. Wilson;J. D. Thomson;J. D. Thomson

  • Flower Choice and Learning in Foraging Bumblebees: Effects of Variation in Nectar Volume and Concentration

    Jonathan Cnaani;Jonathan Cnaani;James D. Thomson;Daniel R. Papaj

  • Pollen transfer by hummingbirds and bumblebees, and the divergence of pollination modes in Penstemon

    Maria Clara Castellanos;Paul Wilson;James D. Thomson;James D. Thomson

  • Explaining Evolutionary Shifts between Bee and Hummingbird Pollination: Convergence, Divergence, and Directionality

    James D. Thomson;Paul Wilson

  • Selection for Outcrossing, Sexual Selection, and the Evolution of Dioecy in Plants

    James D. Thomson;Spencer C. H. Barrett

  • Spatial and Temporal Components of Resource Assessment by Flower-Feeding Insects

    James D. Thomson

  • Flowering phenology, fruiting success and progressive deterioration of pollination in an early-flowering geophyte

    James D. Thomson

  • Hypotheses for the evolution of dioecy in seed plants

    James D. Thomson;Johanne Brunet

  • Does Pathogen Spillover from Commercially Reared Bumble Bees Threaten Wild Pollinators

    Michael C. Otterstatter;James D. Thomson

  • Effects of variation in inflorescence size and floral rewards on the visitation rates of traplining pollinators ofAralia hispida

    James D. Thomson

Frequent Co-Authors

David W. Inouye
David W. Inouye University of Maryland, College Park
Lars Chittka
Lars Chittka Queen Mary University of London
Graham H. Pyke
Graham H. Pyke Macquarie University
Mitchell B. Cruzan
Mitchell B. Cruzan Portland State University
Lawrence D. Harder
Lawrence D. Harder University of Calgary
W. Scott Armbruster
W. Scott Armbruster University of Portsmouth
Nickolas M. Waser
Nickolas M. Waser University of California, Riverside
Spencer C. H. Barrett
Spencer C. H. Barrett University of Toronto
Neal M. Williams
Neal M. Williams University of California, Davis
Mary V. Price
Mary V. Price University of Arizona

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