World's Best Scientists 2026 revealed!

D-Index & Metrics

Ecology and Evolution

D-Index
65
Citations
16759
World Ranking
1778
National Ranking
71

Romain Julliard 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 Romain Julliard 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: 150 publications — 52nd percentile

52% of scientists in this discipline score the same or lower.

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

Romain Julliard 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 Romain Julliard 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: 65 D-Index — 79th percentile

79% of scientists in this discipline score the same or lower.

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

Overview

Romain Julliard is affiliated with the Centre national de la recherche scientifique (CNRS) in France. Their research primarily focuses on Environmental Science, with a particular emphasis on subfields such as Ecological Modeling, Ecology, Evolution, Behavior and Systematics, Global and Planetary Change, Social Psychology, and Genetics.

The scientist's work addresses multiple topics within these fields, including:

  • Species Distribution and Climate Change
  • Plant and animal studies
  • Animal and Plant Science Education
  • Insect and Arachnid Ecology and Behavior
  • Climate variability and models
  • Ecology and Vegetation Dynamics Studies
  • Plant Parasitism and Resistance

Romain Julliard has contributed to a range of publications, with several appearing in recurrent venues such as PLoS ONE and HAL (Le Centre pour la Communication Scientifique Directe). Other publication venues include Agriculture Ecosystems & Environment, Earth system science data, and the Journal of Science Communication.

Recent papers exemplify the scope and interdisciplinary nature of their research:

  • Weeds from non-flowering crops as potential contributors to oilseed rape pollination, 2022, Agriculture Ecosystems & Environment
  • AlgaeTraits: a trait database for (European) seaweeds, 2023, Earth system science data
  • Science knowledge and trust in science in biodiversity citizen science projects, 2023, Journal of Science Communication
  • Measuring epistemic success of a biodiversity citizen science program: A citation study, 2021, PLoS ONE
  • Anticipating the effects of climate warming and natural habitat conversion on waterbird communities to address protection gaps, 2023, Biological Conservation

Collaborations have been an important aspect of their research activities. Frequent co-authors include Colin Fontaine, Baptiste Bedessem, Fabien Verniest, Isabelle Le Viol, and Anis Guelmami, demonstrating partnerships across related environmental and ecological disciplines.

Best Publications

  • Worldwide decline of specialist species: toward a global functional homogenization?

    Joanne Clavel;Romain Julliard;Vincent Devictor

  • Distribution of specialist and generalist species along spatial gradients of habitat disturbance and fragmentation

    Vincent Devictor;Romain Julliard;Frédéric Jiguet

  • Differences in the climatic debts of birds and butterflies at a continental scale

    Vincent Devictor;Chris van Swaay;Tom Brereton;Lluı´s Brotons

  • Defining and measuring ecological specialization

    Vincent Devictor;Vincent Devictor;Joanne Clavel;Romain Julliard;Sébastien Lavergne

  • Birds are tracking climate warming, but not fast enough.

    Vincent Devictor;Romain Julliard;Denis Couvet;Frédéric Jiguet

  • Spatial segregation of specialists and generalists in bird communities.

    Romain Julliard;Joanne Clavel;Vincent Devictor;Frédéric Jiguet

  • Functional biotic homogenization of bird communities in disturbed landscapes

    Vincent Devictor;Romain Julliard;Joanne Clavel;Frédéric Jiguet

  • Advantages of Volunteer-Based Biodiversity Monitoring in Europe

    Dirk S. Schmeller;Dirk S. Schmeller;Pierre Yves Henry;Romain Julliard;Bernd Gruber

  • Common birds facing global changes: what makes a species at risk?

    Romain Julliard;Frédéric Jiguet;Denis Couvet

  • Climate envelope, life history traits and the resilience of birds facing global change

    Frédéric Jiguet;Anne-Sophie Gadot;Romain Julliard;Stuart E. Newson;Stuart E. Newson

  • Functional Homogenization Effect of Urbanization on Bird Communities

    Vincent Devictor;Romain Julliard;Denis Couvet;Alexandre Lee

  • REVIEW: Predictive ecology in a changing world

    Nicolas Mouquet;Yvan Lagadeuc;Vincent Devictor;Luc Doyen

  • Enhancing urban biodiversity and its influence on city-dwellers: An experiment

    Unknown

  • Large-scale trade-off between agricultural intensification and crop pollination services

    Nicolas Deguines;Clémentine Jono;Mathilde Baude;Mathilde Baude;Mickaël Henry

  • Using Semistructured Surveys to Improve Citizen Science Data for Monitoring Biodiversity.

    Steve Kelling;Alison Johnston;Aletta Bonn;Daniel Fink

  • Thermal range predicts bird population resilience to extreme high temperatures

    Frédéric Jiguet;Romain Julliard;Chris D. Thomas;Olivier Dehorter

  • Outstanding challenges for urban conservation research and action

    Assaf Shwartz;Assaf Shwartz;Assaf Shwartz;Anne Turbé;Romain Julliard;Laurent Simon

  • French citizens monitoring ordinary birds provide tools for conservation and ecological sciences

    Frédéric Jiguet;Vincent Devictor;Romain Julliard;Denis Couvet

  • Local and management variables outweigh landscape effects in enhancing the diversity of different taxa in a big metropolis

    Assaf Shwartz;Assaf Shwartz;Audrey Muratet;Laurent Simon;Romain Julliard

  • Ecological factors driving the higher hedgehog (Erinaceus europeaus) density in an urban area compared to the adjacent rural area

    Pauline Hubert;Romain Julliard;Sylvie Biagianti;Marie-Lazarine Poulle

  • The contribution of motorway stormwater retention ponds to the biodiversity of aquatic macroinvertebrates

    Isabelle Le Viol;Julien Mocq;Romain Julliard;Christian Kerbiriou

  • The Whereabouts of Flower Visitors: Contrasting Land-Use Preferences Revealed by a Country-Wide Survey Based on Citizen Science

    Nicolas Deguines;Romain Julliard;Mathieu de Flores;Colin Fontaine

Frequent Co-Authors

Frédéric Jiguet
Frédéric Jiguet French National Museum of Natural History
Vincent Devictor
Vincent Devictor University of Montpellier
Christian Kerbiriou
Christian Kerbiriou Sorbonne University
Denis Couvet
Denis Couvet Centre national de la recherche scientifique, CNRS
Colin Fontaine
Colin Fontaine French National Centre for Scientific Research
Jean Clobert
Jean Clobert Centre national de la recherche scientifique, CNRS
Roger Pradel
Roger Pradel University of Montpellier
Gabriele Sorci
Gabriele Sorci University of Burgundy
Josef Settele
Josef Settele Helmholtz Centre for Environmental Research
Constantí Stefanescu
Constantí Stefanescu Autonomous University of Barcelona

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