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Lawrence D. Harder

Lawrence D. Harder

D-Index & Metrics

Ecology and Evolution

D-Index
66
Citations
19165
World Ranking
1665
National Ranking
101

Lawrence D. Harder 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 Lawrence D. Harder 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: 140 publications — 46th percentile

46% of scientists in this discipline score the same or lower.

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

Lawrence D. Harder 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 Lawrence D. Harder 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: 66 D-Index — 80th percentile

80% 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

  • 2016 - Fellow of the Royal Society of Canada Academy of Science

Overview

Lawrence D. Harder is affiliated with the University of Calgary in Canada and has contributed extensively to the field of Agricultural and Biological Sciences. Their research predominantly focuses on areas such as Ecology, Evolution, Behavior and Systematics, Plant Science, Nature and Landscape Conservation, Insect Science, and Genetics.

The scientist's work covers multiple main topics including:

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

Harder has published research in a variety of peer-reviewed venues with multiple publications in the American Journal of Botany. Other notable journals where their work appears include Ecología Austral, Proceedings of the Royal Society B Biological Sciences, Proceedings of the National Academy of Sciences, and ACM Transactions on Graphics.

Frequent coauthors include:

  • Steven D. Johnson
  • Marcelo A. Aizen
  • Lucas A. Garibaldi
  • Agustín Sáez
  • Marina P. Arbetman

Selected recent papers by Lawrence D. Harder include:

  • Beyond pollen:ovule ratios: Evolutionary consequences of pollinator dependence and pollination efficiency for pollen and ovule production in angiosperms, 2023, American Journal of Botany
  • Myth and reality of a global crisis for agricultural pollination, 2022, Ecología Austral
  • The economy of pollen dispersal in flowering plants, 2023, Proceedings of the Royal Society B Biological Sciences
  • Diverse mating consequences of the evolutionary breakdown of the sexual polymorphism heterostyly, 2023, Proceedings of the National Academy of Sciences
  • Modeling flower pigmentation patterns, 2021, ACM Transactions on Graphics

Lawrence D. Harder has been recognized as a Fellow of the Royal Society of Canada since 2016 in the Academy of Science division.

Best Publications

  • Wild Pollinators Enhance Fruit Set of Crops Regardless of Honey Bee Abundance

    Lucas A Garibaldi;Ingolf Steffan-Dewenter;Rachael Winfree;Marcelo A Aizen

  • The global stock of domesticated honey bees is growing slower than agricultural demand for pollination.

    Marcelo A. Aizen;Lawrence D. Harder

  • Mating cost of large floral displays in hermaphrodite plants

    Lawrence D. Harder;Spencer C. H. Barrett

  • Expanding the limits of the pollen-limitation concept: effects of pollen quantity and quality.

    Marcelo A. Aizen;Lawrence D. Harder

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

    Lawrence D. Harder;James D. Thomson

  • Global growth and stability of agricultural yield decrease with pollinator dependence

    Lucas Alejandro Garibaldi;Marcelo A. Aizen;Alexandra M. Klein;Saul A. Cunningham

  • Pollen Dispersal and Mating Patterns in Animal-Pollinated Plants

    Lawrence D. Harder;Spencer C. H. Barrett

  • Darwin's beautiful contrivances: evolutionary and functional evidence for floral adaptation

    Lawrence D. Harder;Steven D. Johnson

  • Ecology and evolution of plant mating.

    Spencer C.H. Barrett;Lawrence D. Harder

  • Evolution and development of inflorescence architectures.

    Przemyslaw Prusinkiewicz;Przemyslaw Prusinkiewicz;Yvette Erasmus;Yvette Erasmus;Brendan Lane;Brendan Lane;Lawrence D. Harder;Lawrence D. Harder

  • The comparative biology of pollination and mating in flowering plants

    Spencer Charles Hilton Barrett;Lawrence D. Harder;Anne C. Worley

  • Ecology and Evolution of Flowers

    Lawrence D Harder;Spencer Charles Hilton Barrett

  • Morphology as a Predictor of Flower Choice by Bumble Bees

    Lawrence D. Harder

  • Consumptive emasculation: the ecological and evolutionary consequences of pollen theft.

    Anna L. Hargreaves;Lawrence D. Harder;Steven D. Johnson

  • Pollen Removal by Bumble Bees and Its Implications for Pollen Dispersal

    Lawrence D. Harder

  • Flower handling efficiency of bumble bees: morphological aspects of probing time.

    Lawrence D. Harder

  • Function and Evolution of Aggregated Pollen in Angiosperms

    Lawrence D. Harder;Steven D. Johnson

  • The functional significance of poricidal anthers and buzz pollination: controlled pollen removal from Dodecatheon

    L. D. Harder;R. M. R. Barclay

  • Effects of nectar concentration and flower depth on flower handling efficiency of bumble bees.

    Lawrence D. Harder

  • Why are Bumble Bees Risk Averse

    Lawrence D. Harder;Leslie A. Real

  • Behavioral responses by bumble bees to variation in pollen availability

    Lawrence D. Harder

Frequent Co-Authors

Marcelo A. Aizen
Marcelo A. Aizen National University of Comahue
Steven D. Johnson
Steven D. Johnson University of KwaZulu-Natal
Spencer C. H. Barrett
Spencer C. H. Barrett University of Toronto
Lucas A. Garibaldi
Lucas A. Garibaldi National Scientific and Technical Research Council
W. Scott Armbruster
W. Scott Armbruster University of Portsmouth
Saul A. Cunningham
Saul A. Cunningham Australian National University
William G. Wilson
William G. Wilson Duke University
James D. Thomson
James D. Thomson University of Toronto
Gaku Kudo
Gaku Kudo Hokkaido University
Neal M. Williams
Neal M. Williams University of California, Davis

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Related Online Degrees & Career Pathways

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These interdisciplinary pathways highlight the broad range of careers available to those passionate about studying the interactions among people, wildlife, and environments.

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